HSRP and router performance

[Sheffield-Dave]

Hello

Does anybody know how much performance the HSRP-process consumes per subinterface?

In my case three routers have to build 14 segments.

At the moment only the three vitally important segments are protected trough HSRP.

But I plan to make them all redundant.

So how many performance does the HSRP process need in idle running?

Is there a rough rule of thumb?

The hardware:

CISCO 2621 ---> 5 subinterfaces

CISCO 2621XM ---> 6 subinterfaces

CISCO 7206 with NPE 400 ---> 3 subinterfaces

Thanks in advance

[tbaranski · Accepted solution]

It'll be negligable unless you happen to hit a bug. Both the resource requirements (e.g., CPU usage) and bandwidth requirements are insignificant.

[Sheffield-Dave]

Thank you very much for your helpful information!!!

Sheffield-Dave