C3560G-48 & CEF

[sdawson35]

Hi,

We have 2 x C6506E and 2 x C3560-48's, they are all interconnected via port channels at 2Gb per channel. The 6506's are running CEF but the 3560's are not (The 3560's carry all our server traffic).

When I do a show CEF on the 3560's it says %IPv4 CEF not running.

There does not appear to be a global command to enable CEF on these switches.

Is this an IOS version option or is not supported on the hardware platform ?

Please help

Regards

Scott.

[Dan-Ciprian Cicioiu]

Hi Scott,

Try :

ip cef distributed

Dan

[Peter Paluch]

Dan,

On a software based router, this would be true. However, I have a strong feeling that on 3560, CEF actually can not be deactivated, as you would be requesting to deactivate the TCAM use - quite impossible for a multilayer switch. However, it is possible that the IP routing is disabled, and as the result, the CEF also "mimics" the deactivated state. Hence, I suggest using the ip routing command in the global config mode.

Best regards,

Peter

[Dan-Ciprian Cicioiu]

Hi Peter,

You are completly right.

Then I think that those 3560 SVIs are used for management only purposes, and there is no need to enable ip routing, only if he wants to use cef, right ?

Dan