fast switching on different interfaces

Answered Question
Aug 9th, 2007

How can I find out if an interface supports fast switching? I am using IOS 12.2. So it should be enabled by default.

I have this problem too.
0 votes
Correct Answer by wochanda about 9 years 4 months ago

You can issue a 'show interface stat'. This will show you per-interface which packets were switched via 'Processor' (slow path), or 'Route-cache' (CEF path).

In 12.2 IOS, most everything should get CEF switched.

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Correct Answer
wochanda Thu, 08/09/2007 - 10:08

You can issue a 'show interface stat'. This will show you per-interface which packets were switched via 'Processor' (slow path), or 'Route-cache' (CEF path).

In 12.2 IOS, most everything should get CEF switched.

sarah12345 Fri, 08/10/2007 - 06:21

Hi William,

It seems almost everything is going through the slow path, even on the GigE interfaces. Strange.

Thanks a lot!

Sarah

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