Forum Discussion
NimbostratusIS GTM the way to go?
Greetings, This sounds very much like something GTM (now DNS) could handle. DNS' specialty is steering traffic by resolving DNS queries using a Wide-IP.
Wide-IPs are made up of pools that are made up of virtual servers. Wide-IPs also use load balancing algorithms to determine which pool to use.
So, in the case you describe, it sounds like your VIP failover configuration might resemble:
Wide-IP (www.example.com)
| |
| |
+--+----Pool_1 = 1.1.1.1 (data center 1)
|
+------------Pool_2 = 2.2.2.2 (data center 2)
You would select global availability as the wide-ip load balancing algorithm which essentially says; hand out IP addresses (1.1.1.1) from Pool_1, until it becomes unavailable, then use Pool_2 IP address (2.2.2.2).
DNS also has topology based load balancing, so, hand out IP 1.1.1.1 if a query comes from this 10.10.10.1 and 2.2.2.2 if a query comes from 20.20.20.2.
Here's a very good introduction on the topic:
