Wired Intelligent Edge (Campus Switching and Routing)

Occasional Contributor II

MTU size on Cisco for Aruba GRE tunnel ?

We have some switchports on Aruba 2930 that are configured for a GRE tunnel back to our controller.
I can only place the command 'Jumbo" on the VLAN interface of the 2930.

The uplink router is Cisco router. I need to change the MTU size on the WAN interface ?

Would the proper size for the tunnel be "ip mtu 1514" ?
Or another size ?

MVP Guru Elite

Re: MTU size on Cisco for Aruba GRE tunnel ?

use MTU 1600

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