hi every body!
The command " show cef not-cef-switched" on IOS switch shows the reasons for a packet being punted to layer-3 engine. The reasons are:
However ,besides above mentioned reasons, there are other reasons which cause the packet to be punted to layer-3 engine such as:
1) access-list with log option is triggered.
2)Packets that are tunneled,requiring compression and encryption.
3)Nat( except for 6500 series switches which can handle Nat in cef)
MY question is if the packet is punted because of :
1) Packets need to be tunneled.
3)access-list with log optio is triggered.
Then the command" show cef-not-cef-switched " does not show these reasons in its output Or (Just my plain hunch) Would these reasons be Under" unsupported" field in the command output?
thanks a lot!
That's a very good question. It actually made me look at one of the routers here :)
It goes under 'unsupported' (I'm running NAT on this router, hence the number of hits).
sh cef not-cef-switched
CEF Packets passed on to next switching layer