Active-Active config example

[RICHARD MESSINGER]

I have been reading through the docs and the tech pages and have been confounded by the indirection and misdirection of the documents as to showing an example of setting up a pair of CSS's for Active-Active loadsharing for two service offerings sitting behind the CSS's. Can someone send me a pointer to a good source or if you have a good working example, that would be great.

Next stop is TAC to have them explain why my configuration is not working as expected.

[Gilles Dufour]

There are many definitions for active-active.

One is the same VIP active on 2 CSS.

This possible but it requires a 3rd CSS that becomes itself a point of congestion/failure so let's say immediately this is not interesting solution.

The 2nd meaning is 2 vips.

1 is active on CSS-A and the other one is active on CSS-B.

This is described at

http://www.cisco.com/en/US/products/hw/contnetw/ps792/products_configuration_example09186a00802206a3.shtml

Regards,

Gilles.

[RICHARD MESSINGER]

Gilles,

I have read this and it clouds the configuration. What I have is two CSS11503's. Both are connected to upstream to Cat6500's and downstream where the servers are they are connected to a 3550switch. All connections are Gigabit. There is also a pair of Gig connections on the CSS's that we have configured to pass state information between the two CSS's. I have the downstream link configured as a VLAN trunk for the two seperate services that I want to have running. VLAN12 will be primary on CSS1 and VLAN13 will be primary on CSS2.

When I so a show redundancy on the CSS's, it says that it is disabled.

Is there a better configuration that kind of mirrors my needs?