Usually it doesn't recover by itself... Check the FIB TCAM Exception section:
https://supportforums.cisco.com/document/59926/troubleshooting-high-cpu-6500 -sup720 I had the same kind of problem (3BXL, SXI) a few days ago but with IPv6: ----------------------------------------------------------------------- %CONST_V6-SP-5-FIB_EXCEP_ON: Failed to insert an IPv6 prefix in hardware FIB TCAM ----------------------------------------------------------------------- #sh mls cef exception status Current IPv4 FIB exception state = FALSE Current IPv6 FIB exception state = TRUE Current MPLS FIB exception state = FALSE ----------------------------------------------------------------------- #sh mls cef max FIB TCAM maximum routes : ======================= Current :- ------- IPv4 - 1007k MPLS - 1k (default) IPv6 + IP Multicast - 8k (default) ----------------------------------------------------------------------- By the way, what values are you guys using with 1xfull BGP ipv4 + 1xfull BGP ipv6 feeds ? Thanks. Regards, Antonio Soares, CCIE #18473 (RS/SP) [email protected] http://www.ccie18473.net -----Original Message----- From: cisco-nsp [mailto:[email protected]] On Behalf Of Tim Durack Sent: quarta-feira, 4 de Junho de 2014 15:59 To: [email protected] Subject: [c-nsp] C6K_MPLS_LC-SP-5-TCAM_EXCEPTION: TCAM exception occured for MPLS, traffic will be software switched C6K, VS-S720-10G-3CXL, 15.1(SY), someone blew up the FIB. Last time I was involved in such an "experiment", reload was the only recovery. Logs claim the exception has been cleared. Jun 3 22:59:26.790 UTC: %MLSCEF-SP-4-FIB_EXCEPTION_THRESHOLD: Hardware CEF entry usage is at 95% capacity for MPLS protocol. Jun 3 23:00:02.414 UTC: %C6K_MPLS_LC-SP-5-TCAM_EXCEPTION: TCAM exception occured for MPLS, traffic will be software switched Jun 3 23:15:02.712 UTC: %C6K_MPLS_LC-SP-5-TCAMEXPRECOVER: TCAM exception recovered for MPLS, traffic will be hardware switched Sup says the same: RTR-1#show mls cef exception status Current IPv4 FIB exception state = FALSE Current IPv6 FIB exception state = FALSE Current MPLS FIB exception state = FALSE Not sure that I believe this. (Config is Internet in a L3VPN vrf, default from transit, full routes from peering.) Thoughts? Tim:> -- Tim:> _______________________________________________ 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/
