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CML2 - CSR1000v 'does not support user settable MTU'

infinitynzero
Level 1
Level 1

Hey guys, so I was trying to follow along with a lab video posted on CBT Nuggets where they are using CML and a pair of NX-OS 9000v switches and a CSR1000v router... Got to the point where interface MTU size needed to be changed to 9216 but the CSR pops up with an error: "% Interface GigabitEthernet1 does not support user settable mtu."

In the video, they did not encounter this issue. Does anyone know why this is occurring or what steps I can take to be able to change the MTU size?

infinitynzero_0-1693431440551.png

 

Screenshot 2023-08-30 143533.png

2 Replies 2

Torbjørn
Spotlight
Spotlight

Which version of CML and IOS-XE are you running?

Happy to help! Please mark as helpful/solution if applicable.
Get in touch: https://torbjorn.dev

dmcgrath.ca
Level 1
Level 1

Funny, I ran into the same problem following the same video from Jeff Kish

I wasn't able to get 9216 MTU to work, but it had no problem with an MTU of 1550, which should be sufficient for VXLAN.