Ospf neighbors

[foxbot]

HI,

I am working on a test lab and my OSPF neighbor relationship is stuck at EXSTART/Exchange state. I have check the Hello and dead time intervals to ensure that they match and stub flag is not set.

Any thoughts why it is like that or how can I establish the relationship?

[IPTdude]

You have to supply a little more information that that to get a useful answer... What kind of network are you trying to use ospf over? Ethernet, Frame relay ect....

Are you trying to use ospf between a router and a switch? Sometimes with the 3550's and 3560's you need to change the mtu or put ip ospf mtu-ignore to make it work..

There are a lot of possibilities and no one can answer your question until you supply more info.

[AlexR909]

You may use debug :

your_rtr#deb ip ospf adj

copy and paste output and post it !

[foxbot]

Hi Guys,

Thanks for ur response. I have found out that the problem was with the mtu for ospf, setting mtu ignored did the trick. I also tried matching the mtu size and it works too.