Tonight we upgraded from 8.2R2.4 to 8.4R2.4 on a production M20. Everything seemed to go well except for one problem that I'm not sure I can explain. I did a full reboot of the router after the upgrade. BGP sessions started coming up fine, but the router was sending "network unreachable" messages for routes that "show route" was displaying. Doing a "show route extensive" showed that many routes were in the state "<Record Pending>". The header of "show bgp sum" said that there were 150,000+ routes stuck in the "pending" column.
While it was like this, it seemed to route traffic normally for the routes that weren't stuck pending. After 10-15 minutes of being stuck like this, suddenly the backlog disappeared(the pending count dropped to zero) and everything was normal. Just to be safe, I did a full reboot again, and the problem happened a second time exactly the same way. When the traffic suddenly spiked back up from everything starting to work properly, the routes had an age listed of approx 15 minutes. I looked through the official documentation for any clues as to what a high count of pending routes means, but I didn't come up with much. Our import policy is extremely simple, and nothing like this happened before upgrading to 8.4. Has anyone seen anything similar before? Is there something new that tries to throttle updates to the pfe? -- Kevin _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
