ip ospf mtu-ignore

Hi,
 
I am using a network of routers and switches.running ospf on them.to build the
neighborship between a router and a switch I had to give ip ospf mtu-ignore
command on the router interface.the neighborship comes up but flaps every now
and then.
 
1) What all things you need to keep in mind while giving this command?
2)should i be giving this command on all the switches and routers runnig ospf
3)should i reload the router after this command?
4)if I am using EIGRP instead,is there any particular command for
changing/ignoring the MTU to bring the neighborship up?
 
Pls explain the exact usage of this command....
 
Thank you,
Naufal

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Received on Wed Sep 16 2009 - 19:29:24 ART