VMware vSphere

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  • 1.  Can network adapters be connected to two different switches?

    Posted Nov 20, 2017 06:20 PM

    Hi Experts,

    Had a question regarding installation of ESXi 6.5

    During the post- installation activities where we select network adapters for redundancy, if I have just two nics on server. Can i connect vmnic0(NIC1) to a switch that has IP range 10.0.5.0/24 with gateway 10.0.5.1 and vmnic1(NIC2) to a switch that has IP range 10.0.3.0/24 with gateway as 10.0.3.1?

    Does it make sense or both the NIC1 & NIC 2 should be on same ?

    Thanks,

    Siddhesh



  • 2.  RE: Can network adapters be connected to two different switches?
    Best Answer

    Posted Nov 20, 2017 06:31 PM

    Yes, you can certainly do that. But if you've assigned a management vmkernel port on your 10.0.5.0 /24 network, then it needs to use vmnic0 for its communication. If you wanted to run VMs over the 10.0.3.0 /24 network, then create another vswitch to use the uplink for vmnic1.



  • 3.  RE: Can network adapters be connected to two different switches?

    Posted Nov 20, 2017 06:37 PM

    Daphnissov,

    Thank you very much for quick response!! Answer's Spot on!!

    So, if I understand correctly, vmnic 1 cannot be used as a fail over for vmnic0

    Regards,

    Siddhesh



  • 4.  RE: Can network adapters be connected to two different switches?

    Posted Nov 20, 2017 06:41 PM

    The answer is:  It depends. If vmnic0 is in access mode for network A and vmnic1 is access mode for network B, then no. If both are trunks and you've specified VLAN tags for your kernel services and VM portgroups, then yes.