topic Re: ECMP Question? in Application Networking

ECMP Question?

8053zz — Fri, 30 Apr 2004 13:09:57 GMT

In my config I have 2 default routes. By having 2 default routes does this automatically enable ECMP? If so, is there a command or script I can run to see some type of flow table information?

This is on a CSS 11503.

Thanks.

Re: ECMP Question?

Gilles Dufour — Fri, 30 Apr 2004 16:06:15 GMT

ECMP is on by default.

So when you have 2 routes identical it should take effect when necessary.

To see flows, you can do a 'show flows x.x.x.x'

or from llama mode a 'flow-agent show active'.

Regards,

Gilles.

Re: ECMP Question?

8053zz — Fri, 30 Apr 2004 16:58:44 GMT

Thanks for the info. Follow up: If I was sending, say MAPI, traffic through the CSS (not loadbalanced) would using 2 default routes become an issue since the traffic needs to be routed back to the original firewall (1 of the default routes - not in a firewall loadbalancing senario)? or is the CSS making a decision prior based on some type of table information even though a VIP does not reside on the box.

Thanks

Re: ECMP Question?

Gilles Dufour — Sun, 02 May 2004 07:30:59 GMT

it should be ok normally.

That's the purpose of ECMP.