[c-nsp] C6K_MPLS_LC-SP-5-TCAM_EXCEPTION: TCAM exception occured for MPLS, traffic will be software switched

[Antonio Soares]

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)
amsoares at netcabo.pt
http://www.ccie18473.net



-----Original Message-----
From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Tim
Durack
Sent: quarta-feira, 4 de Junho de 2014 15:59
To: cisco-nsp at puck.nether.net
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  cisco-nsp at puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-nsp
archive at http://puck.nether.net/pipermail/cisco-nsp/