2 Replies Latest reply on Sep 5, 2018 11:43 PM by guow

    how the packet flow will work from VM in one Host to VM in other Host

    SK21090 Novice

      Hey Guys

       

      Could you please help me to understand how the packet flow will work from VM in one Host to VM in other Host

      I wanted to understand more about what will happen when virtual switch will see the traffic and pass it to physical switch

       

      I understand packet will follow as below

       

      Example :VM1 > vSwtich > ESX1NIC > PSwtich > ESX2NIC > vSwtich > VM2

       

      Both VM are in same Subnets and a single physical switch is connected to both ESXi's

       

      VM1 packet will contain

       

      VM1 Source MAC

      VM1 Source IP

      VM2 Destination MAC

      VM2 Source IP

       

      The process of packet flow ( as per my understanding, please correct if wrong):

       

      1. As the vswtich does not find entry in its MAC cache, it forwards the traffic to pSwtich via ESX1NIC

      2. pSwtich will have MAC entry of the destination VM2 which will be mapped to the port of the ESX2NIC

      3. pswtich will forward the traffic to vSwtich of ESX2 and vSwtich will lookup its MAC Cache and forward the packet to destination VM2

       

      Questions :

       

      1. will Physical Switch have MAC entry of multiple VM's residing on vSwtich mapped to a single physical port?

       

      Thank-you in advance

       

      Packet Flow from VM in one Host to VM in other Host

       

      Message was edited by: SK21090

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