I just noticed something that I thought was interesting. In IOS, at least on the platform and image I tested, changing an interface MTU after an OSPF adjacency is full will not affect the adjacency. So, if you need to change a link MTU after OSPF is up and running, it should not affect routing.
However, XR seems to behave differently. I just changed the MTU on some links on a router running IOS XR and it caused a routing flap. Why would OSPF flap due to an MTU change that occurs after the adjacency is up? Is this something specific to XR or am I just confused? :-) _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
