top of page
  • dotsincloud

What is MTU?

The MTU requirement of 1600 is only for physical devices in the network underlay.


There should be no devices in the overlay that require an increased of MTU unless you have some specific application requirement for it outside of NSX. 1600 MTU is needed in the switches and routers of the underlay because ESXi VTEPs send vxlan encapsulated traffic between the ESXi hosts.


Symptoms of MTU size being less that 1600 is spontaneous packet drops when applications begin to send larger packets among the different application tiers. Latency is not a symptom of MTU being too small.

If you wish to validate that the MTU size is appropriate for NSX, you can perform vmk pings between ESXi hosts using this documentation:


Also consider this KB:

8 views0 comments

Recent Posts

See All

Packet Drops! huh!

In NSX environment identifying packet drops can require a considerable effort at times. Here are some useful steps that I took when I recently ran into a situation where customer was experiencing pack

Edge service gateway (ESG) repair on NSX-V

If you want to repair you ESG, the best approach is to force sync the edge or redeploy it. Both options can result in about 5-10 minutes of downtime, so you will want to plan the best time to perform

コメント


Post: Blog2_Post
bottom of page