[c-nsp] Policy routing on a 3750 - What am I doing wrong?

Stig Johansen Stig.Johansen at atea.no
Fri Mar 20 03:59:19 EDT 2009


Aaron wrote:
>In trying to do some IP policy routing on a 3750, I ran into some odd
>behavior.  I'd appreciate any pointers/help to get this working.

First of all, the 3750's does most things in hardware, and this is as a "rule" not counted anywhere. You'll only see hits and counters moved when the CPU is being hit. Interface counters are another question as they are hardwired to count. Broadcasts are punted to the CPU, so that's to be expected.

If you want to see what's really going on (and thereby changing the mode of operation), you'll have to disable CEF and prepare yourself for slowness as all traffic will be punted to the CPU. Try this and verify that all is working first.

Best regards,
Stig Meireles Johansen


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