On 7/17/19 6:54 AM, Łukasz Bromirski wrote: >> On 9 Jul 2019, at 17:58, Richard Mikisa <rmik...@gmail.com> wrote: >> >> Hi All, >> >> I am running OSPF across a point to point link between a Nexus 7000 >> and an ASR1000x. >> >> The OSPF works fine but every couple of hours, it breaks and neighbor >> state goes into EXCHANGE and remains there for another 40 minutes or >> so. It then goes into full, OSPF comes up and all is well for another >> couple of hours or so and then the cycle starts again. All the time, >> IP connectivity between the two point to point IPs is up. > Apart from OSPF config changes already mentioned, check what’s going > on in your CoPP policies on both ends. This doesn’t look like a directly > config-related problem, rather environmental (like circuit switchover and > problems with MTU) but it may also be something related to amount > of traffic hitting CoPP policies from time to time and OSPF traffic > overflowing > defined queues. >
You can do some debugging on ip ospf adjacency and such. I have seen cases like this where there have been duplicate loopback ip's, duplicate ptp link id's, and such, which cause similar results. The adjacency debugging should give you more of a reason WHY the adjacency is going down. Post your results if you find the cause. Mike- _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
