redundant-index xx

[skumar1969]

Hi,

I am wondering if it really significant if you put this command under the rules and services in an active/back-up setup.

Because, one of my peer is arguing that it makes more sense only in an active/active environment where it preserves the sessions but in an active/backup it happens by default and this command doesn't help the situation anyway. The app-session, VRRP will do this. True?

[Gilles Dufour · Accepted solution]

Failover is not statefull unless you configure ASR/ISC.

If you do have ASR/ISC you need redundant-index on the services and rules.

Without ASR/ISC the redundant-index is useless and after failover all your connections will be lost.

It does not matter if you are in Active/Standby or Active/Active mode.

More info at:

http://www.cisco.com/en/US/products/hw/contnetw/ps792/products_configuration_guide_chapter09186a00801577ce.html

Regards,

Gilles.

[skumar1969]

Gilles,

In my Active/Standby setup we already use the ISC/ASR on the GE ports.

So, you say the redundant-index is a must now to save the sessions.

Thanks Gilles!