MTU limitation on Fastehernet ports on Cisco Routers

Unanswered Question
Apr 5th, 2007

Is the MTU limitation on Fastethernet ports on Cisco routers in hardware or in software.

I am trying to increase MTU size on FE port to avoid frengmentation of GRE packets exiting the interface but I get % Interface FastEthernet0/0 does not support user settable mtu.

Is there any workaround? Or is there any cisco router that supports changing MTU on Fastehernet ports (not Gigabitethernet).

Tnx

I have this problem too.
0 votes
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Loading.
ankbhasi Thu, 04/05/2007 - 04:46

Hi Friend,

Can you try changing the mtu value with "ip mtu" command?

Regards,

Ankur

rais Thu, 04/05/2007 - 04:48

FE ports should be following 802.3u standard. I don't think it will take MTU longer than what standard calls for. Payload can be max 1500 bytes.

Thanks.

Actions

This Discussion