topic Re: keepalive frequency issue in Application Networking

keepalive frequency issue

litouch — Mon, 11 Dec 2006 21:21:52 GMT

Hi guys,

I have one question, how soon can CSS detect the service status when one service gets down? From cisco.com, I learned that the frequency could be from 2 to 255.

Does that mean 2 seconds to 255 seconds? or check the service 2 times to 255 times in one second?

If check one time every 2 seconds, I think that's too long... may many request will be directed to a down service.

Thank you!

Re: keepalive frequency issue

Gilles Dufour — Tue, 12 Dec 2006 08:13:32 GMT

Ed,

the frequency is measured in seconds.

So 2 seconds is the minimum.

If you had 100 servers and you had to check them 10 times per second, you would need a CPU just for the keepalives.

Gilles.

Re: keepalive frequency issue

litouch — Tue, 12 Dec 2006 18:00:43 GMT

Got it. Thank you.

You know, I feel it's much better here than any other discuss sections in cisco.com. I always can find the right answer!

Re: keepalive frequency issue

Gilles Dufour — Wed, 13 Dec 2006 08:03:36 GMT

I'm glad you appreciate the answers you are getting here.

Gilles.