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Forum Discussion

Kibao_130897's avatar
Kibao_130897
Icon for Nimbostratus rankNimbostratus
Oct 20, 2014

Failover Configuration Between Datacenter and Data Recovery Center using F5 BIG-IP GTM Feature

I want to deploy the F5 BIG-IP 6900 GTM to do fail over between DC and DRC. Traffics from remote site usually go to the DC. When the DC/services at the DC is down, LoadBalancers should automatically ...
deployment
design
Jason_40733's avatar
Jason_40733
Icon for Cirrocumulus rankCirrocumulus
Oct 20, 2014

The GTM feature uses DNS to re-direct traffic. You can set it up to monitor health of the servers behind it. You can also have it set one set of servers as the primary, and the other as backup.

 

You'll need to tune your DNS record TTL appropriately though. If you go with a 24 hour TTL of 86400... the GTMs would immediately start serving out the Data Recovery Center IP address right away when the Data Center is unavailable, but anyone that has connected will have the old IP address cached for the next 24 hours. If you tune your DNS TTL down to 0... you'll be serving out the IP address from your GTM's on every single request. This is doable, but doesn't scale for large environments.

 

Jason

 

Kibao_130897's avatar
Kibao_130897
Icon for Nimbostratus rankNimbostratus
Oct 21, 2014
Thanks Very Much Jason, What do you mean when you say large environments? We have 214 sites and each site has around 20 users. Will this solution work perfect with our infrastructure? Saidi