I've just recently got a Cat 4500 with a Sup4 (512mb RAM)... Whenever I try and send it a full table I get a CEF error telling me its disabling CEF. The routers not live, so im leaving it in "testing". I've tried the newest IOS and its not worked. I've tried sending sh tech off to Cisco etc.. No difference.
00:37:02: %FIB-2-FIBDOWN: CEF has been disabled due to a low memory condition.
It can be re-enabled by configuring "ip cef [distributed]"
After re-enabling CEF it then just resets, even with a full table and CEF "disabled", its got about 300mb RAM left free! I just don't understand why its showing a problem. BGP works fine, I've just got a default route set at the moment, but this needs to change very soon.
Any suggestions would be great.