<?xml version='1.0' encoding='US-ASCII'?><schema xmlns="http://www.w3.org/2001/XMLSchema" xmlns:eatonvance="http://eatonvance/20260331" xmlns:dei="http://xbrl.sec.gov/dei/2025" xmlns:srt-types="http://fasb.org/srt-types/2025" xmlns:deprecated="http://www.xbrl.org/2009/role/deprecated" xmlns:dtr="http://www.xbrl.org/2009/dtr" xmlns:oef="http://xbrl.sec.gov/oef/2025" xmlns:ref="http://www.xbrl.org/2006/ref" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xl="http://www.xbrl.org/2003/XLink" xmlns:us-gaap="http://fasb.org/us-gaap/2025" xmlns:oef-pre="http://xbrl.sec.gov/oef-pre/2025" xmlns:oef-lab="http://xbrl.sec.gov/oef-lab/2025" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:country="http://xbrl.sec.gov/country/2025" xmlns:us-roles="http://fasb.org/us-roles/2025" xmlns:enum2="http://xbrl.org/2020/extensible-enumerations-2.0" xmlns:us-types="http://fasb.org/us-types/2025" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2022-03-31" xmlns:oef-def="http://xbrl.sec.gov/oef-def/2025" xmlns:negated="http://www.xbrl.org/2009/role/negated" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:srt="http://fasb.org/srt/2025" xmlns:oef-sr="http://xbrl.sec.gov/oef-sr/2025" xmlns:srt-roles="http://fasb.org/srt-roles/2025" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrli="http://www.xbrl.org/2003/instance" targetNamespace="http://eatonvance/20260331" elementFormDefault="qualified"><import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/><import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/><import namespace="http://xbrl.sec.gov/dei/2025" schemaLocation="https://xbrl.sec.gov/dei/2025/dei-2025.xsd"/><import namespace="http://fasb.org/us-types/2025" schemaLocation="https://xbrl.fasb.org/us-gaap/2025/elts/us-types-2025.xsd"/><import namespace="http://www.xbrl.org/dtr/type/2022-03-31" schemaLocation="https://www.xbrl.org/dtr/type/2022-03-31/types.xsd"/><import namespace="http://xbrl.sec.gov/country/2025" schemaLocation="https://xbrl.sec.gov/country/2025/country-2025.xsd"/><import namespace="http://fasb.org/srt/2025" schemaLocation="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd"/><import namespace="http://fasb.org/srt-types/2025" schemaLocation="https://xbrl.fasb.org/srt/2025/elts/srt-types-2025.xsd"/><import namespace="http://xbrl.sec.gov/oef-sr/2025" schemaLocation="https://xbrl.sec.gov/oef/2025/oef-sr-2025.xsd"/><import namespace="http://fasb.org/us-gaap/2025" schemaLocation="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd"/><import namespace="http://fasb.org/us-roles/2025" schemaLocation="https://xbrl.fasb.org/us-gaap/2025/elts/us-roles-2025.xsd"/><import namespace="http://fasb.org/srt-roles/2025" schemaLocation="https://xbrl.fasb.org/srt/2025/elts/srt-roles-2025.xsd"/><annotation><appinfo><link:linkbase id="lnk"><link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/><link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ShareholderReport" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ShareholderReport"/><link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ShareholderReportHoldingsDetails" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ShareholderReportHoldingsDetails"/><link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ShareholderReportLineGraphDetails" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ShareholderReportLineGraphDetails"/><link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ShareholderReportAverageAnnualReturnDetails" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ShareholderReportAverageAnnualReturnDetails"/><link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ClassOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ClassOnly"/><link:roleRef roleURI="http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists" xlink:type="simple" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-roles-2025.xsd#eedm"/><link:roleRef roleURI="http://xbrl.sec.gov/oef/role/Other1CategoryOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#Other1CategoryOnly"/><link:presentationLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/ShareholderReport"><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_ShareClassDomain" xlink:label="ShareClassDomain"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000077416Member" xlink:label="C000077416Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000077416Member" order="1.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000077417Member" xlink:label="C000077417Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000077417Member" order="2.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000077418Member" xlink:label="C000077418Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000077418Member" order="3.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000211121Member" xlink:label="C000211121Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000211121Member" order="4.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014095Member" xlink:label="C000014095Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014095Member" order="5.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014097Member" xlink:label="C000014097Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014097Member" order="6.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014098Member" xlink:label="C000014098Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014098Member" order="7.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000241867Member" xlink:label="C000241867Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000241867Member" order="8.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014109Member" xlink:label="C000014109Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014109Member" order="9.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014108Member" xlink:label="C000014108Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014108Member" order="10.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000225189Member" xlink:label="C000225189Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000225189Member" order="11.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000235422Member" xlink:label="C000235422Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000235422Member" order="12.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000235423Member" xlink:label="C000235423Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000235423Member" order="13.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000235424Member" xlink:label="C000235424Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000235424Member" order="14.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000235421Member" xlink:label="C000235421Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000235421Member" order="15.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014103Member" xlink:label="C000014103Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014103Member" order="16.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014104Member" xlink:label="C000014104Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014104Member" order="17.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014105Member" xlink:label="C000014105Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014105Member" order="18.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000211120Member" xlink:label="C000211120Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000211120Member" order="19.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000036621Member" xlink:label="C000036621Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000036621Member" order="20.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000139784Member" xlink:label="C000139784Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000139784Member" order="21.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000195935Member" xlink:label="C000195935Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000195935Member" order="22.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/></link:presentationLink><link:presentationLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/ShareholderReportHoldingsDetails"><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_ShareClassDomain" xlink:label="ShareClassDomain"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000077416Member" xlink:label="C000077416Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000077416Member" order="1.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000077417Member" xlink:label="C000077417Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000077417Member" order="2.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000077418Member" xlink:label="C000077418Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000077418Member" order="3.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000211121Member" xlink:label="C000211121Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000211121Member" order="4.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014095Member" xlink:label="C000014095Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014095Member" order="5.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014097Member" xlink:label="C000014097Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014097Member" order="6.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014098Member" xlink:label="C000014098Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014098Member" order="7.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000241867Member" xlink:label="C000241867Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000241867Member" order="8.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014109Member" xlink:label="C000014109Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014109Member" order="9.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014108Member" xlink:label="C000014108Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014108Member" order="10.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000225189Member" xlink:label="C000225189Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000225189Member" order="11.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000235422Member" xlink:label="C000235422Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000235422Member" order="12.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000235423Member" xlink:label="C000235423Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000235423Member" order="13.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000235424Member" xlink:label="C000235424Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000235424Member" order="14.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000235421Member" xlink:label="C000235421Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000235421Member" order="15.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014103Member" xlink:label="C000014103Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014103Member" order="16.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014104Member" xlink:label="C000014104Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014104Member" order="17.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014105Member" xlink:label="C000014105Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014105Member" order="18.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000211120Member" xlink:label="C000211120Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000211120Member" order="19.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000036621Member" xlink:label="C000036621Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000036621Member" order="20.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000139784Member" xlink:label="C000139784Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000139784Member" order="21.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000195935Member" xlink:label="C000195935Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000195935Member" order="22.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentTypeCategorizationMember" xlink:label="InvestmentTypeCategorizationMember"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetOtherLineCTIMember" xlink:label="AssetOtherLineCTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="InvestmentTypeCategorizationMember" xlink:to="AssetOtherLineCTIMember" order="1.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetSeniorFloatingMinusRateLoansCTIMember" xlink:label="AssetSeniorFloatingMinusRateLoansCTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="InvestmentTypeCategorizationMember" xlink:to="AssetSeniorFloatingMinusRateLoansCTIMember" order="2.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetShortMinusTermInvestmentsCTIMember" xlink:label="AssetShortMinusTermInvestmentsCTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="InvestmentTypeCategorizationMember" xlink:to="AssetShortMinusTermInvestmentsCTIMember" order="3.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetCorporateBondsCTIMember" xlink:label="AssetCorporateBondsCTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="InvestmentTypeCategorizationMember" xlink:to="AssetCorporateBondsCTIMember" order="4.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetCommercialMortgageMinusBackedSecuritiesCTIMember" xlink:label="AssetCommercialMortgageMinusBackedSecuritiesCTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="InvestmentTypeCategorizationMember" xlink:to="AssetCommercialMortgageMinusBackedSecuritiesCTIMember" order="5.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetCollateralizedMortgageObligationsCTIMember" xlink:label="AssetCollateralizedMortgageObligationsCTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="InvestmentTypeCategorizationMember" xlink:to="AssetCollateralizedMortgageObligationsCTIMember" order="6.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetAssetMinusBackedSecuritiesCTIMember" xlink:label="AssetAssetMinusBackedSecuritiesCTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="InvestmentTypeCategorizationMember" xlink:to="AssetAssetMinusBackedSecuritiesCTIMember" order="7.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetUSTreasuryObligationsCTIMember" xlink:label="AssetUSTreasuryObligationsCTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="InvestmentTypeCategorizationMember" xlink:to="AssetUSTreasuryObligationsCTIMember" order="8.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetUSGovernmentAgencyMortgageMinusBackedSecuritiesCTIMember" xlink:label="AssetUSGovernmentAgencyMortgageMinusBackedSecuritiesCTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="InvestmentTypeCategorizationMember" xlink:to="AssetUSGovernmentAgencyMortgageMinusBackedSecuritiesCTIMember" order="9.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetSovereignGovernmentBondsCTIMember" xlink:label="AssetSovereignGovernmentBondsCTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="InvestmentTypeCategorizationMember" xlink:to="AssetSovereignGovernmentBondsCTIMember" order="10.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetGovernmentNationalMortgageAssociationParticipationAgreementsCTIMember" xlink:label="AssetGovernmentNationalMortgageAssociationParticipationAgreementsCTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="InvestmentTypeCategorizationMember" xlink:to="AssetGovernmentNationalMortgageAssociationParticipationAgreementsCTIMember" order="11.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_OtherCategory1Domain" xlink:label="OtherCategory1Domain"/><link:loc xlink:type="locator" xlink:href="#eatonvance_NotRatedCTIMember" xlink:label="NotRatedCTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="OtherCategory1Domain" xlink:to="NotRatedCTIMember" order="1.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_CCCorLowerCTIMember" xlink:label="CCCorLowerCTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="OtherCategory1Domain" xlink:to="CCCorLowerCTIMember" order="2.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_BCTIMember" xlink:label="BCTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="OtherCategory1Domain" xlink:to="BCTIMember" order="3.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_BBCTIMember" xlink:label="BBCTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="OtherCategory1Domain" xlink:to="BBCTIMember" order="4.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_BBBCTIMember" xlink:label="BBBCTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="OtherCategory1Domain" xlink:to="BBBCTIMember" order="5.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_CashEquivalentsCTIMember" xlink:label="CashEquivalentsCTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="OtherCategory1Domain" xlink:to="CashEquivalentsCTIMember" order="6.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_ACTIMember" xlink:label="ACTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="OtherCategory1Domain" xlink:to="ACTIMember" order="7.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AACTIMember" xlink:label="AACTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="OtherCategory1Domain" xlink:to="AACTIMember" order="8.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AAACTIMember" xlink:label="AAACTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="OtherCategory1Domain" xlink:to="AAACTIMember" order="9.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_CashandEquivalentsCTIMember" xlink:label="CashandEquivalentsCTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="OtherCategory1Domain" xlink:to="CashandEquivalentsCTIMember" order="10.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_CashCTIMember" xlink:label="CashCTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="OtherCategory1Domain" xlink:to="CashCTIMember" order="11.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_CCTIMember" xlink:label="CCTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="OtherCategory1Domain" xlink:to="CCTIMember" order="12.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_CCCCTIMember" xlink:label="CCCCTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="OtherCategory1Domain" xlink:to="CCCCTIMember" order="13.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/></link:presentationLink><link:presentationLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/ShareholderReportLineGraphDetails"><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_ShareClassDomain" xlink:label="ShareClassDomain"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000077416Member" xlink:label="C000077416Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000077416Member" order="1.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000077417Member" xlink:label="C000077417Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000077417Member" order="2.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000077418Member" xlink:label="C000077418Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000077418Member" order="3.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000211121Member" xlink:label="C000211121Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000211121Member" order="4.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014095Member" xlink:label="C000014095Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014095Member" order="5.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014097Member" xlink:label="C000014097Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014097Member" order="6.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014098Member" xlink:label="C000014098Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014098Member" order="7.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000241867Member" xlink:label="C000241867Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000241867Member" order="8.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014109Member" xlink:label="C000014109Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014109Member" order="9.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014108Member" xlink:label="C000014108Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014108Member" order="10.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000225189Member" xlink:label="C000225189Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000225189Member" order="11.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000235422Member" xlink:label="C000235422Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000235422Member" order="12.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000235423Member" xlink:label="C000235423Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000235423Member" order="13.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000235424Member" xlink:label="C000235424Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000235424Member" order="14.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000235421Member" xlink:label="C000235421Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000235421Member" order="15.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014103Member" xlink:label="C000014103Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014103Member" order="16.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014104Member" xlink:label="C000014104Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014104Member" order="17.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014105Member" xlink:label="C000014105Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014105Member" order="18.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000211120Member" xlink:label="C000211120Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000211120Member" order="19.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000036621Member" xlink:label="C000036621Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000036621Member" order="20.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000139784Member" xlink:label="C000139784Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000139784Member" order="21.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000195935Member" xlink:label="C000195935Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000195935Member" order="22.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/></link:presentationLink><link:presentationLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/ShareholderReportAverageAnnualReturnDetails"><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_ShareClassDomain" xlink:label="ShareClassDomain"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000077416Member" xlink:label="C000077416Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000077416Member" order="1.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000077417Member" xlink:label="C000077417Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000077417Member" order="2.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000077418Member" xlink:label="C000077418Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000077418Member" order="3.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000211121Member" xlink:label="C000211121Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000211121Member" order="4.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014095Member" xlink:label="C000014095Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014095Member" order="5.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014097Member" xlink:label="C000014097Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014097Member" order="6.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014098Member" xlink:label="C000014098Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014098Member" order="7.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000241867Member" xlink:label="C000241867Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000241867Member" order="8.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014109Member" xlink:label="C000014109Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014109Member" order="9.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014108Member" xlink:label="C000014108Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014108Member" order="10.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000225189Member" xlink:label="C000225189Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000225189Member" order="11.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000235422Member" xlink:label="C000235422Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000235422Member" order="12.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000235423Member" xlink:label="C000235423Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000235423Member" order="13.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000235424Member" xlink:label="C000235424Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000235424Member" order="14.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000235421Member" xlink:label="C000235421Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000235421Member" order="15.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014103Member" xlink:label="C000014103Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014103Member" order="16.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014104Member" xlink:label="C000014104Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014104Member" order="17.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014105Member" xlink:label="C000014105Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000014105Member" order="18.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000211120Member" xlink:label="C000211120Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000211120Member" order="19.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000036621Member" xlink:label="C000036621Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000036621Member" order="20.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000139784Member" xlink:label="C000139784Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000139784Member" order="21.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000195935Member" xlink:label="C000195935Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000195935Member" order="22.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/></link:presentationLink><link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/ClassOnly"><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_ShareClassDomain" xlink:label="ShareClassDomain"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000077416Member" xlink:label="C000077416Member"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000077416Member" order="1.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000077417Member" xlink:label="C000077417Member"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000077417Member" order="2.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000077418Member" xlink:label="C000077418Member"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000077418Member" order="3.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000211121Member" xlink:label="C000211121Member"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000211121Member" order="4.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014095Member" xlink:label="C000014095Member"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000014095Member" order="5.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014097Member" xlink:label="C000014097Member"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000014097Member" order="6.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014098Member" xlink:label="C000014098Member"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000014098Member" order="7.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000241867Member" xlink:label="C000241867Member"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000241867Member" order="8.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014109Member" xlink:label="C000014109Member"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000014109Member" order="9.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014108Member" xlink:label="C000014108Member"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000014108Member" order="10.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000225189Member" xlink:label="C000225189Member"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000225189Member" order="11.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000235422Member" xlink:label="C000235422Member"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000235422Member" order="12.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000235423Member" xlink:label="C000235423Member"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000235423Member" order="13.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000235424Member" xlink:label="C000235424Member"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000235424Member" order="14.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000235421Member" xlink:label="C000235421Member"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000235421Member" order="15.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014103Member" xlink:label="C000014103Member"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000014103Member" order="16.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014104Member" xlink:label="C000014104Member"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000014104Member" order="17.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014105Member" xlink:label="C000014105Member"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000014105Member" order="18.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000211120Member" xlink:label="C000211120Member"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000211120Member" order="19.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000036621Member" xlink:label="C000036621Member"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000036621Member" order="20.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000139784Member" xlink:label="C000139784Member"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000139784Member" order="21.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000195935Member" xlink:label="C000195935Member"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000195935Member" order="22.0" priority="1"/></link:definitionLink><link:definitionLink xlink:type="extended" xlink:role="http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists"><link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentTypeCategorizationMember" xlink:label="InvestmentTypeCategorizationMember"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetOtherLineCTIMember" xlink:label="AssetOtherLineCTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="AssetOtherLineCTIMember" order="1.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetSeniorFloatingMinusRateLoansCTIMember" xlink:label="AssetSeniorFloatingMinusRateLoansCTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="AssetSeniorFloatingMinusRateLoansCTIMember" order="2.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetShortMinusTermInvestmentsCTIMember" xlink:label="AssetShortMinusTermInvestmentsCTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="AssetShortMinusTermInvestmentsCTIMember" order="3.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetCorporateBondsCTIMember" xlink:label="AssetCorporateBondsCTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="AssetCorporateBondsCTIMember" order="4.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetCommercialMortgageMinusBackedSecuritiesCTIMember" xlink:label="AssetCommercialMortgageMinusBackedSecuritiesCTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="AssetCommercialMortgageMinusBackedSecuritiesCTIMember" order="5.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetCollateralizedMortgageObligationsCTIMember" xlink:label="AssetCollateralizedMortgageObligationsCTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="AssetCollateralizedMortgageObligationsCTIMember" order="6.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetAssetMinusBackedSecuritiesCTIMember" xlink:label="AssetAssetMinusBackedSecuritiesCTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="AssetAssetMinusBackedSecuritiesCTIMember" order="7.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetUSTreasuryObligationsCTIMember" xlink:label="AssetUSTreasuryObligationsCTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="AssetUSTreasuryObligationsCTIMember" order="8.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetUSGovernmentAgencyMortgageMinusBackedSecuritiesCTIMember" xlink:label="AssetUSGovernmentAgencyMortgageMinusBackedSecuritiesCTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="AssetUSGovernmentAgencyMortgageMinusBackedSecuritiesCTIMember" order="9.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetSovereignGovernmentBondsCTIMember" xlink:label="AssetSovereignGovernmentBondsCTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="AssetSovereignGovernmentBondsCTIMember" order="10.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetGovernmentNationalMortgageAssociationParticipationAgreementsCTIMember" xlink:label="AssetGovernmentNationalMortgageAssociationParticipationAgreementsCTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="AssetGovernmentNationalMortgageAssociationParticipationAgreementsCTIMember" order="11.0" priority="1"/></link:definitionLink><link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/Other1CategoryOnly"><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_OtherCategory1Domain" xlink:label="OtherCategory1Domain"/><link:loc xlink:type="locator" xlink:href="#eatonvance_NotRatedCTIMember" xlink:label="NotRatedCTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OtherCategory1Domain" xlink:to="NotRatedCTIMember" order="1.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_CCCorLowerCTIMember" xlink:label="CCCorLowerCTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OtherCategory1Domain" xlink:to="CCCorLowerCTIMember" order="2.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_BCTIMember" xlink:label="BCTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OtherCategory1Domain" xlink:to="BCTIMember" order="3.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_BBCTIMember" xlink:label="BBCTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OtherCategory1Domain" xlink:to="BBCTIMember" order="4.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_BBBCTIMember" xlink:label="BBBCTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OtherCategory1Domain" xlink:to="BBBCTIMember" order="5.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_CashEquivalentsCTIMember" xlink:label="CashEquivalentsCTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OtherCategory1Domain" xlink:to="CashEquivalentsCTIMember" order="6.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_ACTIMember" xlink:label="ACTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OtherCategory1Domain" xlink:to="ACTIMember" order="7.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AACTIMember" xlink:label="AACTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OtherCategory1Domain" xlink:to="AACTIMember" order="8.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AAACTIMember" xlink:label="AAACTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OtherCategory1Domain" xlink:to="AAACTIMember" order="9.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_CashandEquivalentsCTIMember" xlink:label="CashandEquivalentsCTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OtherCategory1Domain" xlink:to="CashandEquivalentsCTIMember" order="10.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_CashCTIMember" xlink:label="CashCTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OtherCategory1Domain" xlink:to="CashCTIMember" order="11.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_CCTIMember" xlink:label="CCTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OtherCategory1Domain" xlink:to="CCTIMember" order="12.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_CCCCTIMember" xlink:label="CCCCTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OtherCategory1Domain" xlink:to="CCCCTIMember" order="13.0" priority="1"/></link:definitionLink><link:labelLink xlink:type="extended" xlink:role="http://www.xbrl.org/2003/role/link"><link:loc xlink:type="locator" xlink:href="#eatonvance_C000077416Member" xlink:label="C000077416Member"/><link:label xlink:type="resource" xlink:label="label_C000077416Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000077416</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000077416Member" xlink:to="label_C000077416Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000077417Member" xlink:label="C000077417Member"/><link:label xlink:type="resource" xlink:label="label_C000077417Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000077417</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000077417Member" xlink:to="label_C000077417Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000077418Member" xlink:label="C000077418Member"/><link:label xlink:type="resource" xlink:label="label_C000077418Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000077418</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000077418Member" xlink:to="label_C000077418Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000211121Member" xlink:label="C000211121Member"/><link:label xlink:type="resource" xlink:label="label_C000211121Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000211121</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000211121Member" xlink:to="label_C000211121Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014095Member" xlink:label="C000014095Member"/><link:label xlink:type="resource" xlink:label="label_C000014095Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000014095</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000014095Member" xlink:to="label_C000014095Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014097Member" xlink:label="C000014097Member"/><link:label xlink:type="resource" xlink:label="label_C000014097Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000014097</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000014097Member" xlink:to="label_C000014097Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014098Member" xlink:label="C000014098Member"/><link:label xlink:type="resource" xlink:label="label_C000014098Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000014098</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000014098Member" xlink:to="label_C000014098Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000241867Member" xlink:label="C000241867Member"/><link:label xlink:type="resource" xlink:label="label_C000241867Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000241867</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000241867Member" xlink:to="label_C000241867Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014109Member" xlink:label="C000014109Member"/><link:label xlink:type="resource" xlink:label="label_C000014109Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000014109</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000014109Member" xlink:to="label_C000014109Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014108Member" xlink:label="C000014108Member"/><link:label xlink:type="resource" xlink:label="label_C000014108Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000014108</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000014108Member" xlink:to="label_C000014108Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000225189Member" xlink:label="C000225189Member"/><link:label xlink:type="resource" xlink:label="label_C000225189Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000225189</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000225189Member" xlink:to="label_C000225189Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000235422Member" xlink:label="C000235422Member"/><link:label xlink:type="resource" xlink:label="label_C000235422Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000235422</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000235422Member" xlink:to="label_C000235422Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000235423Member" xlink:label="C000235423Member"/><link:label xlink:type="resource" xlink:label="label_C000235423Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000235423</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000235423Member" xlink:to="label_C000235423Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000235424Member" xlink:label="C000235424Member"/><link:label xlink:type="resource" xlink:label="label_C000235424Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000235424</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000235424Member" xlink:to="label_C000235424Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000235421Member" xlink:label="C000235421Member"/><link:label xlink:type="resource" xlink:label="label_C000235421Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000235421</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000235421Member" xlink:to="label_C000235421Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014103Member" xlink:label="C000014103Member"/><link:label xlink:type="resource" xlink:label="label_C000014103Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000014103</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000014103Member" xlink:to="label_C000014103Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014104Member" xlink:label="C000014104Member"/><link:label xlink:type="resource" xlink:label="label_C000014104Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000014104</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000014104Member" xlink:to="label_C000014104Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000014105Member" xlink:label="C000014105Member"/><link:label xlink:type="resource" xlink:label="label_C000014105Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000014105</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000014105Member" xlink:to="label_C000014105Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000211120Member" xlink:label="C000211120Member"/><link:label xlink:type="resource" xlink:label="label_C000211120Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000211120</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000211120Member" xlink:to="label_C000211120Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000036621Member" xlink:label="C000036621Member"/><link:label xlink:type="resource" xlink:label="label_C000036621Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000036621</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000036621Member" xlink:to="label_C000036621Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000139784Member" xlink:label="C000139784Member"/><link:label xlink:type="resource" xlink:label="label_C000139784Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000139784</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000139784Member" xlink:to="label_C000139784Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_C000195935Member" xlink:label="C000195935Member"/><link:label xlink:type="resource" xlink:label="label_C000195935Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000195935</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000195935Member" xlink:to="label_C000195935Member" priority="1"/><link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentTypeAxis" xlink:label="InvestmentTypeAxis"/><link:label xlink:type="resource" xlink:label="label_InvestmentTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Investment Type [Axis]</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InvestmentTypeAxis" xlink:to="label_InvestmentTypeAxis" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetOtherLineCTIMember" xlink:label="AssetOtherLineCTIMember"/><link:label xlink:type="resource" xlink:label="label_AssetOtherLineCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Asset Other Line</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetOtherLineCTIMember" xlink:to="label_AssetOtherLineCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetSeniorFloatingMinusRateLoansCTIMember" xlink:label="AssetSeniorFloatingMinusRateLoansCTIMember"/><link:label xlink:type="resource" xlink:label="label_AssetSeniorFloatingMinusRateLoansCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">AssetSenior Floating-Rate Loans</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetSeniorFloatingMinusRateLoansCTIMember" xlink:to="label_AssetSeniorFloatingMinusRateLoansCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetShortMinusTermInvestmentsCTIMember" xlink:label="AssetShortMinusTermInvestmentsCTIMember"/><link:label xlink:type="resource" xlink:label="label_AssetShortMinusTermInvestmentsCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">AssetShort-Term Investments</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetShortMinusTermInvestmentsCTIMember" xlink:to="label_AssetShortMinusTermInvestmentsCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetCorporateBondsCTIMember" xlink:label="AssetCorporateBondsCTIMember"/><link:label xlink:type="resource" xlink:label="label_AssetCorporateBondsCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">AssetCorporate Bonds</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetCorporateBondsCTIMember" xlink:to="label_AssetCorporateBondsCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetCommercialMortgageMinusBackedSecuritiesCTIMember" xlink:label="AssetCommercialMortgageMinusBackedSecuritiesCTIMember"/><link:label xlink:type="resource" xlink:label="label_AssetCommercialMortgageMinusBackedSecuritiesCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">AssetCommercial Mortgage-Backed Securities</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetCommercialMortgageMinusBackedSecuritiesCTIMember" xlink:to="label_AssetCommercialMortgageMinusBackedSecuritiesCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetCollateralizedMortgageObligationsCTIMember" xlink:label="AssetCollateralizedMortgageObligationsCTIMember"/><link:label xlink:type="resource" xlink:label="label_AssetCollateralizedMortgageObligationsCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">AssetCollateralized Mortgage Obligations</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetCollateralizedMortgageObligationsCTIMember" xlink:to="label_AssetCollateralizedMortgageObligationsCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetAssetMinusBackedSecuritiesCTIMember" xlink:label="AssetAssetMinusBackedSecuritiesCTIMember"/><link:label xlink:type="resource" xlink:label="label_AssetAssetMinusBackedSecuritiesCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">AssetAsset-Backed Securities</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetAssetMinusBackedSecuritiesCTIMember" xlink:to="label_AssetAssetMinusBackedSecuritiesCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetUSTreasuryObligationsCTIMember" xlink:label="AssetUSTreasuryObligationsCTIMember"/><link:label xlink:type="resource" xlink:label="label_AssetUSTreasuryObligationsCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">AssetU.S. Treasury Obligations</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetUSTreasuryObligationsCTIMember" xlink:to="label_AssetUSTreasuryObligationsCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetUSGovernmentAgencyMortgageMinusBackedSecuritiesCTIMember" xlink:label="AssetUSGovernmentAgencyMortgageMinusBackedSecuritiesCTIMember"/><link:label xlink:type="resource" xlink:label="label_AssetUSGovernmentAgencyMortgageMinusBackedSecuritiesCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">AssetU.S. Government Agency Mortgage-Backed Securities</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetUSGovernmentAgencyMortgageMinusBackedSecuritiesCTIMember" xlink:to="label_AssetUSGovernmentAgencyMortgageMinusBackedSecuritiesCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetSovereignGovernmentBondsCTIMember" xlink:label="AssetSovereignGovernmentBondsCTIMember"/><link:label xlink:type="resource" xlink:label="label_AssetSovereignGovernmentBondsCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">AssetSovereign Government Bonds</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetSovereignGovernmentBondsCTIMember" xlink:to="label_AssetSovereignGovernmentBondsCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AssetGovernmentNationalMortgageAssociationParticipationAgreementsCTIMember" xlink:label="AssetGovernmentNationalMortgageAssociationParticipationAgreementsCTIMember"/><link:label xlink:type="resource" xlink:label="label_AssetGovernmentNationalMortgageAssociationParticipationAgreementsCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">AssetGovernment National Mortgage Association Participation Agreements</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetGovernmentNationalMortgageAssociationParticipationAgreementsCTIMember" xlink:to="label_AssetGovernmentNationalMortgageAssociationParticipationAgreementsCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_NotRatedCTIMember" xlink:label="NotRatedCTIMember"/><link:label xlink:type="resource" xlink:label="label_NotRatedCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Not Rated</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NotRatedCTIMember" xlink:to="label_NotRatedCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_CCCorLowerCTIMember" xlink:label="CCCorLowerCTIMember"/><link:label xlink:type="resource" xlink:label="label_CCCorLowerCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">CCC or Lower</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CCCorLowerCTIMember" xlink:to="label_CCCorLowerCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_BCTIMember" xlink:label="BCTIMember"/><link:label xlink:type="resource" xlink:label="label_BCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">B</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BCTIMember" xlink:to="label_BCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_BBCTIMember" xlink:label="BBCTIMember"/><link:label xlink:type="resource" xlink:label="label_BBCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">BB</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BBCTIMember" xlink:to="label_BBCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_BBBCTIMember" xlink:label="BBBCTIMember"/><link:label xlink:type="resource" xlink:label="label_BBBCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">BBB</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BBBCTIMember" xlink:to="label_BBBCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_CashEquivalentsCTIMember" xlink:label="CashEquivalentsCTIMember"/><link:label xlink:type="resource" xlink:label="label_CashEquivalentsCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Cash &amp; Equivalents</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashEquivalentsCTIMember" xlink:to="label_CashEquivalentsCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_ACTIMember" xlink:label="ACTIMember"/><link:label xlink:type="resource" xlink:label="label_ACTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">A</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ACTIMember" xlink:to="label_ACTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AACTIMember" xlink:label="AACTIMember"/><link:label xlink:type="resource" xlink:label="label_AACTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">AA</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AACTIMember" xlink:to="label_AACTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_AAACTIMember" xlink:label="AAACTIMember"/><link:label xlink:type="resource" xlink:label="label_AAACTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">AAA</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AAACTIMember" xlink:to="label_AAACTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_CashandEquivalentsCTIMember" xlink:label="CashandEquivalentsCTIMember"/><link:label xlink:type="resource" xlink:label="label_CashandEquivalentsCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Cash and Equivalents</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashandEquivalentsCTIMember" xlink:to="label_CashandEquivalentsCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_CashCTIMember" xlink:label="CashCTIMember"/><link:label xlink:type="resource" xlink:label="label_CashCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Cash</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashCTIMember" xlink:to="label_CashCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_CCTIMember" xlink:label="CCTIMember"/><link:label xlink:type="resource" xlink:label="label_CCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CCTIMember" xlink:to="label_CCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#eatonvance_CCCCTIMember" xlink:label="CCCCTIMember"/><link:label xlink:type="resource" xlink:label="label_CCCCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">CCC</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CCCCTIMember" xlink:to="label_CCCCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_NoTradingSymbolFlag" xlink:label="NoTradingSymbolFlag"/><link:label xlink:type="resource" xlink:label="label_NoTradingSymbolFlag" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">No Trading Symbol [Flag]</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NoTradingSymbolFlag" xlink:to="label_NoTradingSymbolFlag" priority="1"/><link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsNet" xlink:label="AssetsNet"/><link:label xlink:type="resource" xlink:label="label_AssetsNet" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">AssetsNet</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsNet" xlink:to="label_AssetsNet" priority="1"/><link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentCompanyPortfolioTurnover" xlink:label="InvestmentCompanyPortfolioTurnover"/><link:label xlink:type="resource" xlink:label="label_InvestmentCompanyPortfolioTurnover" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">InvestmentCompanyPortfolioTurnover</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InvestmentCompanyPortfolioTurnover" xlink:to="label_InvestmentCompanyPortfolioTurnover" priority="1"/></link:labelLink></link:linkbase></appinfo></annotation><element name="C000077416Member" id="eatonvance_C000077416Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="C000077417Member" id="eatonvance_C000077417Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="C000077418Member" id="eatonvance_C000077418Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="C000211121Member" id="eatonvance_C000211121Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="C000014095Member" id="eatonvance_C000014095Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="C000014097Member" id="eatonvance_C000014097Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="C000014098Member" id="eatonvance_C000014098Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="C000241867Member" id="eatonvance_C000241867Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="C000014109Member" id="eatonvance_C000014109Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="C000014108Member" id="eatonvance_C000014108Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="C000225189Member" id="eatonvance_C000225189Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="C000235422Member" id="eatonvance_C000235422Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="C000235423Member" id="eatonvance_C000235423Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="C000235424Member" id="eatonvance_C000235424Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="C000235421Member" id="eatonvance_C000235421Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="C000014103Member" id="eatonvance_C000014103Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="C000014104Member" id="eatonvance_C000014104Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="C000014105Member" id="eatonvance_C000014105Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="C000211120Member" id="eatonvance_C000211120Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="C000036621Member" id="eatonvance_C000036621Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="C000139784Member" id="eatonvance_C000139784Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="C000195935Member" id="eatonvance_C000195935Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="AssetOtherLineCTIMember" id="eatonvance_AssetOtherLineCTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="AssetSeniorFloatingMinusRateLoansCTIMember" id="eatonvance_AssetSeniorFloatingMinusRateLoansCTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="AssetShortMinusTermInvestmentsCTIMember" id="eatonvance_AssetShortMinusTermInvestmentsCTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="AssetCorporateBondsCTIMember" id="eatonvance_AssetCorporateBondsCTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="AssetCommercialMortgageMinusBackedSecuritiesCTIMember" id="eatonvance_AssetCommercialMortgageMinusBackedSecuritiesCTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="AssetCollateralizedMortgageObligationsCTIMember" id="eatonvance_AssetCollateralizedMortgageObligationsCTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="AssetAssetMinusBackedSecuritiesCTIMember" id="eatonvance_AssetAssetMinusBackedSecuritiesCTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="AssetUSTreasuryObligationsCTIMember" id="eatonvance_AssetUSTreasuryObligationsCTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="AssetUSGovernmentAgencyMortgageMinusBackedSecuritiesCTIMember" id="eatonvance_AssetUSGovernmentAgencyMortgageMinusBackedSecuritiesCTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="AssetSovereignGovernmentBondsCTIMember" id="eatonvance_AssetSovereignGovernmentBondsCTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="AssetGovernmentNationalMortgageAssociationParticipationAgreementsCTIMember" id="eatonvance_AssetGovernmentNationalMortgageAssociationParticipationAgreementsCTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="NotRatedCTIMember" id="eatonvance_NotRatedCTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="CCCorLowerCTIMember" id="eatonvance_CCCorLowerCTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="BCTIMember" id="eatonvance_BCTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="BBCTIMember" id="eatonvance_BBCTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="BBBCTIMember" id="eatonvance_BBBCTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="CashEquivalentsCTIMember" id="eatonvance_CashEquivalentsCTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="ACTIMember" id="eatonvance_ACTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="AACTIMember" id="eatonvance_AACTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="AAACTIMember" id="eatonvance_AAACTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="CashandEquivalentsCTIMember" id="eatonvance_CashandEquivalentsCTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="CashCTIMember" id="eatonvance_CashCTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="CCTIMember" id="eatonvance_CCTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="CCCCTIMember" id="eatonvance_CCCCTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/></schema>
