MTU Mismatch in OSPF

From: Mohammad Saeed (mzsaeed@gmail.com)
Date: Tue Feb 06 2007 - 01:03:17 ART

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Hi Every body,

I am just wondering, how to verify the ospf adjacensy is not coming up
and reason is MTU mismatch? Like if you have set

system mtu 1504 on the switch and there are routers using that switch
to establish adjacency, they will be stuck in INIT/EXSTRAT State, what
type of debug can show that the adjacency is stuck because of MTU
mismatch?

How can you change MTU to 1504 on the router interface to match if you
don't want to use ip ospf mtu-ignore command under interfaces?

Regards,

Mohammad Zahed Saeed

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