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dude64
Enthusiast
Enthusiast

Jumbo Frame Support in NSX Labs on Workstation Pro

This is an old topic. Has anyone figured out how to enable Jumbo frame support in Workstation or Fusion? In my case, to fully support default configuration of NSX vxlan which normally require 1600 byte frames. One can make NSX work by setting  all VDS switch MTU and ESXi VTEP interfaces to 1400, and I have found most apps and VMs work fine. But in some cases, a VM has a problem w/ MTU discovery and fails because it expects 1500 byte frames which can't fit inside the vxlan overlay network. It'd be a lot easier to build NSX labs if Workstation/Fusion supported Jumbo frames which I'm scratching my head on why Workstation/Fusion are missing this.

Thanks, dude64

4 Replies
Sreec
VMware Employee
VMware Employee

As far as i know by default it is not supported. Did you edit the nested hosts vmx file and change adapters type (from ethernet*.virtualDev = “e1000” to ethernet*.virtualDev = “vmxnet3”). ?   Ensure all the adapters that you are using is vmxnet  also  follow VMware NSX Lab Part 3 VMware Workstation 11 · rharmonson/richtech Wiki · GitHub

Cheers,
Sree | VCIX-5X| VCAP-5X| VExpert 6x|Cisco Certified Specialist
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amolnjadhav
Enthusiast
Enthusiast

Hi,

   I have edited the nested hosts vmx file and change adapters type (from ethernet*.virtualDev = “e1000” to ethernet*.virtualDev = “vmxnet3”) but when i run this command ESX crashes everytime... any recommend tp resolve this issue?

  vmkping ++netstack=vxlan <vtep_ip> -s 1572 -d -I vmk3

Please consider marking this answer "correct" or "helpful" if you think your query have been answered correctly. Regards Amol Jadhav VCP NSXT | VCP NSXV | VCIX6-NV | VCAP-DCA | CCNA | CCNP - BSCI
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dude64
Enthusiast
Enthusiast

I'm working with Workstation Pro 14 and the problem still remains. I am assuming amolnjadhav's problem w/ recommended workaround still exists. Anyone? vmware?

Thanks,

dude64

amolnjadhav
Enthusiast
Enthusiast

Yes, I do face this problem..

Please consider marking this answer "correct" or "helpful" if you think your query have been answered correctly. Regards Amol Jadhav VCP NSXT | VCP NSXV | VCIX6-NV | VCAP-DCA | CCNA | CCNP - BSCI
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