Configuring APP and ASR together for global server failover/load-balancing

[ct_yau]

Hi,

I am working on this:

I have two sites, each with a pair of CSS running ASR to safeguard against the CSS being single point of failure at each site. Each pair of CSS is connected to a server farm. Global server failover/load-balancing is achieved by zone-based DNS with APP.

ASR is covered in "Cisco Content Services Switch Redundancy Configuration Guide".

APP is covered in "Cisco Content Services Switch Global Server Load-Balancing Configuration Guide".

However, I am not sure how ASR and APP together should be handled. Is there wiser ways than to form fully-meshed APP sessions between the four CSS's? Or can I define source-groups for each pair of CSS and form APP sessions between the two pairs (two source-groups)?

Please help.

CT Yau

Hong Kong

[sbilgi]

The following link might be helpful with your configuration:

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

[ct_yau]

Thanks but the link is an example of APP within the same site. The APP in the example is only used for configuration synchronization, which I think is IT staff's concern but the feature does not affect service to end-users.

My question is APP between two sites, each site with a pair of CSS's in ASR. In my setup the APP is important for DNS record synchronization between the sites and is critical to end-user service.