MTU

  • vSphere 6.5vkernmtu01

    VMware vSphere 6.5 Change vmkernel MTU size

    When dealing with VMkernel ports in vSphere 6.5 for most use cases for performance, we want to enable jumbo frames on the vmkernel ports to allow for less fragmentation of the packets for iSCSI, vMotion, and so forth.  Let’s take…

  • NSXnsxjumbo04

    Troubleshooting NSX VXLAN jumbo frames in nested lab

    In working recently in a nested VMware environment running three clusters and NSX, I ran into a jumbo frames issue with VXLAN connectivity across the clusters.  I was simulating different WAN/subnet environments using an Untangle appliance as a router in…