Hello, Over the weekend, we updated one of our 7513s from 12.2.25S12 to the 12.2.25S15. The driver behind this was service policies used for LLQ dropping from interfaces, causing all sorts of havoc w/ our voice prioritization. The thought was that moving to the more current issue would address this. It did not.
We also noticed something else odd. We have three multilink bundles on this router, and have had them configured to use "ip route-cache distributed" for over a year. We haven't had any problems w/ this until rebooting into the S15 image. Of the three bundles, Mu1 is the only one that seems to work w/ dcef. Mu2 and Mu3 have had to be set w/ CEF disabled to route properly. The symptoms are that from the router you can ping the other sides of Mu2 and Mu3, but no external routing is possible. The interface stats show packets being dropped on the output buffer.. which is weird, until we disable CEF for those interfaces.. then everything starts working properly, and the stats show Processor Switching. Am I missing something? Or is there an issue w/ S15 / Dcef / Multilink and IP Unnumbered to a loopback? core-ar1#show interfaces mu1 stats Multilink1 Switch path Pkts In Chars In Pkts Out Chars Out Processor 0 0 0 0 Route cache 377309 104869674 0 0 Distributed cache 0 0 459932 500579863 Total 377309 104869674 459932 500579863 core-ar1#show interfaces mu2 stats Multilink2 Switch path Pkts In Chars In Pkts Out Chars Out Processor 212 12247 1339852 487984693 Route cache 1837532 2064076461 0 0 Distributed cache 0 0 0 0 Total 1837744 2064088708 1339852 487984693 core-ar1#show interfaces mu3 stats Multilink3 Switch path Pkts In Chars In Pkts Out Chars Out Processor 18 1640 1068371 1264449182 Route cache 701359 67160511 0 0 Distributed cache 0 0 0 0 Total 701377 67162151 1068371 1264449182 interface Multilink1 ip unnumbered Loopback0 no cdp enable ppp multilink ppp multilink interleave multilink max-links 2 multilink min-links 1 multilink load-threshold 1 either no ppp multilink fragmentation multilink-group 1 no clns route-cache end interface Multilink2 ip unnumbered Loopback0 no cdp enable ppp multilink ppp multilink interleave multilink max-links 3 multilink min-links 1 multilink load-threshold 1 either no ppp multilink fragmentation multilink-group 2 no clns route-cache end interface Multilink3 ip unnumbered Loopback0 no cdp enable ppp multilink ppp multilink interleave multilink max-links 2 multilink min-links 1 multilink load-threshold 1 either no ppp multilink fragmentation multilink-group 3 no clns route-cache end _______________________________________________ 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/