Jumbo Frames - Routers

[dacruzer1]

If I configure my catalyst switches for jumbo frames, do I need to configure my edge routers also?

THanks in advance.

Alfred

[Mandlenkosi Nkiwane]

Are the jumbo frames going to be routed to a different facility within your network?

If so yes, as the router will discard them.

This answer is based on the assumption that you have a remote site with a datacenter elsewhere, where you have your storage residing?

[dacruzer1]

Our storage/datacenter is residing in our main hub. The remote sites are connected via Metro E. link.

[Mandlenkosi Nkiwane]

In that case yes you have to configure all the devices on the path to your storage. That way the devices will not discard the jumbo packets.

[dacruzer1]

Ok thanks.  Do you know how to configure a 3825 router to accept jumbo frames?

Thanks again.

[Mandlenkosi Nkiwane · Accepted solution]

Q. Do the on-board Gigabit Ethernet ports on the Cisco 3800 routers support jumbo frames?

A. Yes. The on-board GE ports on the Cisco 3800 routers support jumbo frame (frames up to 16351 bytes).

Cisco3825(config)#int g0/0
Cisco3825(config-if)#mtu ?
   <64-16351>  MTU size in bytes

By the way mostly this will be 9216

http://www.cisco.com/en/US/prod/collateral/routers/ps5855/prod_qas0900aecd8016a953.html