Nate Carlson <> wrote: > We're having some really odd issues with a pair of 6500's. We know > that > our TCAM table is overflowed, but it's worked fine up until now (new > pair > of SUP720-10GE's on order, but not here yet, of course.) > > Here's the TCAM errors we are getting, which are pretty typical: > > Dec 3 10:29:18: %MLSCEF-SP-7-FIB_EXCEPTION: FIB TCAM exception, Some > entries will be software switched Dec 3 10:31:49: > %MLSCEF-SP-7-FIB_EXCEPTION: FIB TCAM exception, Some entries will be > software switched Dec 3 10:38:10: %MLSCEF-SP-7-FIB_EXCEPTION: FIB > TCAM exception, Some entries will be software switched
I had exactly the same situation with a rsp720-3c > for a NPE-G2. After that, we started having intermittent connectivity > issues to various IP's on the internet. When we saw those issues, we > swapped the G1 back in, with the same config (verified via Rancid.) > > From our hosts connected to the 6500's, some remote IP's work fine, Sounds very familiar ;-) > Now, the real odd part, is that from the same 6509, coming from the > .14 > address, I can hit those IP's without any issues: Same here > Are these the type of issues expected with TCAM overflows? It seems > odd to > me that our CPU utilization would be low, but we'd be having these, > unless 'sh proc cpu' isn't the right place to look for that? Yes. > Appreciate any thoughts. If we can definitively say that TCAM is the > issue, we'll filter our BGP routes (get rid of the /24's).. my > understanding is that to get hardware-switched routes again, though, > we'd have to reboot the 6500 - is that also correct? > > Thanks much! > > -Nate I solved my problem by requesting my upstreams to provide me with a default route, and only have my IX sessions unfiltered. This brought the number of routes back to ~60K which was ok after a reboot. Beginning this week the 3c was replaced with a 3cxl, everything works again as it should. Reboot was really needed btw. Good luck.... Martin _______________________________________________ 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/