Nexus 3K Jumbo Frames

[Terry MacDougal]

If I enable Jumbo frames on my Nexus 3500-X, how will this effect other hosts connected to the switch that are not configured to use Jumbo Frames?

Thanks

[Reza Sharifi · Accepted solution]

It will not effect the hosts.

HTH

[Darian O'Dirling - TCE]

Hi Terry,

There is a couple different senarios that allow for Jumbo frames. This process is done with adjusting MTU size. The following commands are for configuring MRU on a Layer 3 port

Nexus(config)#interface ethernet 1/1
Nexus(config-if)#no switchport
Nexus(config-if)#mtu 9216

This document contains all of the other senarios : https://www.cisco.com/c/en/us/support/docs/switches/nexus-9000-series-switches/118994-config-nexus-00.html

And this video provides steps for configuring MTU on a Nexus 9000 switch. The video outlines the need for proper MTU in the network and explains how to remedy MTU related interface errors, via interface MTU configuration.

https://www.youtube.com/watch?v=GbBeB6h9MKk