> It's almost safe to use it, if you can turn off features which cause troubles. > CEF is not trouble-making feature except some configurations. > > Except when the router decides to turn CEF off all by itself due to > malloc failure. That sounds like a memory leak, have you tried the latest versions ? in 12.0(x)S there was a catastrophic memory leak in 12.0(7)S related to cef ... It's more bizarre than that since show memory indicates its got plenty so its either recovering it somehow or confused. I would suggest that later. We're running the latest code, well not quite (only 12.0(8)S rather than 12.0(8.3)S, but we are sick of catastrophic failures and 12.0(8)S seems stable enough, or more exactly we don't need more bug introducing features. Mark.