CSS Zone based DNS for Site Redundancy?

acomiskey · ‎06-12-2007

I am in the process of changing from rules based dns to zone based dns. I had used the document below to provide redundancy between 2 sites.

http://www.cisco.com/en/US/products/hw/contnetw/ps792/products_configuration_example09186a00801dcd75.shtml

The is an acl in the document which says

"If the primary site is up, then this ACL will tell requests landing on this site to prefer the Primary site.

clause 10 permit any any destination content owner_backup/WWW-backup prefer hacked_redirectt

clause 99 permit any any destination any

apply circuit-(VLAN1)

apply dns

Once I implemented a dns-server zone, this acl no longer has an effect. The requests are round robbining unless I set the dns-server zone to preferlocal. Unfortunately this does not solve my problem, if the main site is up both css's should prefer the main site.

How is this same thing accomplished with zone based dns, or is it even possible? Thanks.

acomiskey · ‎06-12-2007

Anyone? Gilles, any words of advice?

I found this in the documentation for acl's, it states...

"If you configure a CSS with the dns-server command, and the CSS receives a

DNS query for a domain name that you configured on the CSS using the host

command, the DNS query will not match on an ACL that is configured with the

apply dns command.

However, if you configure a domain name on a content rule on a CSS using the

add dns domain_ name command, a DNS query for that domain name will match

on an ACL that is configured with the apply dns command."

The problem with this statement is I am not using the "host" command and I am also not using the "add dns" command. I am using the "dns-record a" command.

acomiskey · ‎06-13-2007

Now accepting guesses!

Do I have to go back to rules based to accomplish this?