Hi All, In a similar vein to the concurrently running thread about a SUP-2T-XL thinking it is out of TCAM space...
What are realistic usage levels for TCAM on 6500 and 7600s RSPs? We've got some 7600s running RSP720-3CXL-10GEs and they are at nearly 80% utilisation (74%-78% off the top of my head). Ignoring the fact that one can partition a certain percentage for IPv4 or IPv6 or multicast space. I mean overall can we actually use 1 million TCAM entries? I have asked TAC and they said the TCAM can be 100% used, not until we have 1,024,000 entries in TCAM will we start of see the syslog messages for failing to install a prefix. I am certain that one CAN NOT use 100% of the TCAM space, I'm sure I read somewhere that at around 90% utilisation we start so process switch / drop packets / fail to install routes. I obviously can’t find any Cisco documentation on saying we can’t use 100% of the TCAM. TAC have said we can use 100% of the TCAM. I still don’t believe this, I’m so certain I have read somewhere that we can’t. Has anyone had any experiences relating to this they can comment on? Cheers, James. _______________________________________________ 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/
