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  • 1.  Network frames must not be coalesced

    Posted Oct 26, 2021 01:57 PM

    An application is deployed on a new VM, how I check Network frames must not have coalesced.

    I am using below CLI command to check MTU value. Should i take the decision on MTU values ?

    What MTU values  says Network Frames not coalesced?

     

    $vmHostNAs= Get-VMHost $vmHost.Name | Get-VMHostNetworkAdapter | Where { $_.GetType().Name -eq "HostVMKernelVirtualNicImpl" } | Select VMHost, Name, MTU



  • 2.  RE: Network frames must not be coalesced

    Posted Oct 26, 2021 02:18 PM

    This is a tricky question since packet coalescence is not only related to the MTU value but for example also to the network latency and the size of the message.

    If you notice packet coalescence, you should tune the MTU value.

    There is no hard rule that states this specific MTU size will cause packet coalescence, without looking at the message size and network latency.