[c-nsp] Filtering HSRP ingress on Cat 2970?

[Christian Bering]

Hi,

How would I best go about filtering HSRP packets ingress on an access
port on a Cat 2970 (and similar) switch?

Is it enough to filter packets destined to 224.0.0.2 UDP/1985 or should
I look at an extended mac access-list instead?

A brief configuration example would be appriciated.

Thanks,

Christian