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jfh_142817's avatar
jfh_142817
Icon for Nimbostratus rankNimbostratus
Feb 03, 2014

Data Center Failover

Hi, Am looking for some advice on the following. I have two data centers with F5's in both . Data centers are connected/routed across 2 x 10G links using a dynamic routing protocol. They are going to...
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Cory_50405's avatar
Cory_50405
Icon for Noctilucent rankNoctilucent
Feb 03, 2014

If you are running BGP with your ISPs, I'd suggest you advertise networks as follows:

 

Data center 1 : DC1 server routes advertise as normal, DC2 servers prepend the AS an extra time

 

Data center 2 : DC2 server routes advertise as normal, DC1 servers prepend the AS an extra time

 

This setup will ensure traffic for DC1 prefers its local ISP if the links are up, but will use DC2's ISP if not, and vice versa.

 

If you need assistance building the router configs, just give me a shout.