This sounds like a problem that was discussed here (or on the groupstudy ccielab list) in the last few days. The problem then was EIGRP over ATM. Now it's OSPF over ATM. Try specifying your OSPF neighbors manually, so unicasting occurs.
There may be a better solution, but try this until someone chimes in with something better. Tom Larus ""Nelson Herron"" wrote in message news:[EMAIL PROTECTED] > Troubles with OSPF routing over an ATM interface. After about 15 - 20 > minutes the hellos from one of my routers disappear (w/ attendant chaos). > Tried swapping boards, same problem. I have three routers (7000 - 11.2.15 & > 2 RSP7000s - 12.2.x) running classical IP through a Madge Collage 750 ATM > switch. The 7000 and the hub RSP7000 work fine. The second RSP7000 works > fine immediately after a "shut/no shut" on the interface, but after 15 > minutes I no longer see hello messages from it at the hub router. I still > see hello messages from the hub RSP7000 router at the affected one. It's > hard to tell for sure but it appears that the svc is reset at about the same > time - may be incidental. ILMI works fine. This is a pretty plain > configuration - I'm using "ospf priority" and "ospf broadcast" on the atm > sub-if. Another thing that puzzles me is the fact that the highest "ospf > priority" does not seem to set the DR. Rather it still seems to follow the > highest loopback address. Reading books like Doyle led me to believe it > would follow the highest priority. Seems pretty brutal to have to reboot an > entire network to get the ATM DR in the correct location. Thoughts??? Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=66100&t=66096 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
