Looking back on tickets, it seems like this problem started happening after upgrading from 12.4(15)T5 to 12.4(24)T. Before the upgrade, it was running solid for a year.
I have tried 12.4(24)T1 but that doesn't seem to have any effect. I can't go below 12.4(20)T because we want to deploy IOS content filtering. > On Thu, Jul 30, 2009 at 7:48 AM, Rodney Dunn<[email protected]> wrote: >> >> >> Jay Nakamura wrote: >>>> >>>> Did you force the DR to be the hub by setting the priority? >>> >>> Yes. And confirmed. >>> >>>> I forgot, did you set it to broadcast or multipoint? >>> >>> broadcast >>> >>>> I'd suggest you look at the packet capture feature and get a trace when >>>> it's >>>> down. >>> >>> Is this what you are referring to? >>> >>> http://www.cisco.com/en/US/docs/ios/12_4t/12_4t11/ht_rawip.html#wp1049404 >>> >> >> No this one: >> >> http://supportwiki.cisco.com/ViewWiki/index.php/Tech_Insights:Utilizing_the_New_Packet_Capture_Feature >> >> >> >>> There is no tech onsite and it's a little far so I can't do it at the >>> moment but if I can't figure out anything else, that will be the next >>> step. >>> >>>> Do you see the LSA's in the database? >>> >>> I believe it was blank. It's working now after a reboot so I can't >>> check but I will check next time it happens. >>> >> >> Ok. That is the starting point if the neigbors are not flapping. >> >> >>>> Can you ping 224.0.0.5 and get a response? >>>> >>>> Are the neighbors flapping? >>> >>> It didn't flap at all. Routes just disappeared. Well, that's not >>> 100% true. The backup hub VPN connection went down and it wouldn't >>> come up. I could ping the primary hub tunnel IP when the routes were >>> gone but none of the other DMVPN peer IP. >>> >> >> Almost always issues like this are with packet loss. You have to make sure >> the multicast traffic can traverse the cloud and that requires replication >> at the hub..and the spoke if you are doing a single spoke tunnel with dual >> hubs. >> >> >>> >>>> Jay Nakamura wrote: >>>>> >>>>> Has anyone seen this symptom? >>>>> >>>>> 1841, advanced IP feature set >>>>> DMVPN spoke and OSPF over the DMVPN >>>>> >>>>> Running 12.4(24)T >>>>> >>>>> Periodically, the router looses all it's OSPF routes and stays that >>>>> way. Clearing the DMVPN or OSPF process does nothing. It recreates >>>>> the OSPF session with neighbor but it still has no routes. It can't >>>>> seem to re-connect to the backup DMVPN hub either. >>>>> >>>>> Router still routes to the static default route for internet traffic >>>>> and everything else seems normal. Just can't get to the VPN network. >>>>> >>>>> It's really not doing anything fancy other than DMVPN and OSPF. >>>>> _______________________________________________ >>>>> cisco-nsp mailing list [email protected] >>>>> https://puck.nether.net/mailman/listinfo/cisco-nsp >>>>> archive at http://puck.nether.net/pipermail/cisco-nsp/ >> > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
