content: <?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
    <!-- Generated by Workiva -->
    <headerData>
      <submissionType>144</submissionType>
      <filerInfo>
        <filer>
          <filerCredentials>
            <cik>0001494211</cik>
            <ccc>XXXXXXXX</ccc>
          </filerCredentials>
        </filer>
        <liveTestFlag>LIVE</liveTestFlag>
  
  
  
      </filerInfo>
    </headerData>
    <formData>
      <issuerInfo>
        <issuerCik>0001596532</issuerCik>
        <issuerName>ARISTA NETWORKS INC</issuerName>
        <secFileNumber>001-36468</secFileNumber>
        <issuerAddress>
          <com:street1>5453 Great America Parkway</com:street1>
          <com:city>Santa Clara</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>95054</com:zipCode>
        </issuerAddress>
        <issuerContactPhone>4085475000</issuerContactPhone>
        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Ita Brennan</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Officer</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>J.P. Morgan Securities LLC</name>
          <address>
            <com:street1>390 Madison Avenue</com:street1>
            <com:street2>6th Floor</com:street2>
            <com:city>New York</com:city>
            <com:stateOrCountry>NY</com:stateOrCountry>
            <com:zipCode>10017</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>24000</noOfUnitsSold>
        <aggregateMarketValue>6678720</aggregateMarketValue>
        <noOfUnitsOutstanding>312633612</noOfUnitsOutstanding>
        <approxSaleDate>03/05/2024</approxSaleDate>
        <securitiesExchangeName>NYSE</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>03/05/2024</acquiredDate>
        <natureOfAcquisitionTransaction>Stock Option Exercise</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>14783</amountOfSecuritiesAcquired>
        <paymentDate>03/05/2024</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>02/21/2023</acquiredDate>
        <natureOfAcquisitionTransaction>Restricted Stock Awards</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>4531</amountOfSecuritiesAcquired>
        <paymentDate>02/21/2023</paymentDate>
        <natureOfPayment>NA</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>05/20/2023</acquiredDate>
        <natureOfAcquisitionTransaction>Restricted Stock Awards</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>4686</amountOfSecuritiesAcquired>
        <paymentDate>05/20/2023</paymentDate>
        <natureOfPayment>NA</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <remarks>The sales under this filing  include  Cashless Option Exercises that will occur within 3 months from the date of filings.</remarks>
      <noticeSignature>
        <noticeDate>03/05/2024</noticeDate>
        <planAdoptionDates>
          <planAdoptionDate>12/05/2023</planAdoptionDate>
        </planAdoptionDates>
        <signature>/s/ J.P. Morgan Securities LLC as agent and attorney-in-fact for Ita Brennan.</signature>
      </noticeSignature>
    </formData>
  </edgarSubmission>
metadata_documents: [{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 4154}]
text: 144
  0001494211
  XXXXXXXX
  LIVE
  0001596532
  ARISTA NETWORKS INC
  001-36468
  5453 Great America Parkway
  Santa Clara
  CA
  95054
  4085475000
  Ita Brennan
  Officer
  Common
  J.P. Morgan Securities LLC
  390 Madison Avenue
  6th Floor
  New York
  NY
  10017
  24000
  6678720
  312633612
  03/05/2024
  NYSE
  Common
  03/05/2024
  Stock Option Exercise
  Issuer
  N
  14783
  03/05/2024
  Cash
  Common
  02/21/2023
  Restricted Stock Awards
  Issuer
  N
  4531
  02/21/2023
  NA
  Common
  05/20/2023
  Restricted Stock Awards
  Issuer
  N
  4686
  05/20/2023
  NA
  Y
  The sales under this filing  include  Cashless Option Exercises that will occur within 3 months from the date of filings.
  03/05/2024
  12/05/2023
  /s/ J.P. Morgan Securities LLC as agent and attorney-in-fact for Ita Brennan.