Forum Discussion
CirrostratusF5 BIG-IP's in Different Datacenters
If all your links are down, then you go split brain. But if all your links are down, then you have more problems than just the split brain BigIP.
(Note that the way I usually do this is an HA pair in each DC (Or metropolitan DC pair). Then use GTM to provide global resilience).
Regarding fancy devices not requiring your network to be up to prevent split brain. Why bother? You can always put in a path that would encompass the same links as the failover clustering using witness. You're not limited to just two links.
CirrocumulusHow to mitigate?
You have multiple links. The links should have no single point of failure. i.e. separate switches, separate links from separate providers and make sure you check the actual paths of each
H
CirrostratusHi Hamish,
What if the two links are down? im trying to find similar solution like this but at the big-ip level
https://docs.microsoft.com/en-us/windows-server/failover-clustering/deploy-cloud-witness
- Hamish
If all your links are down, then you go split brain. But if all your links are down, then you have more problems than just the split brain BigIP.
(Note that the way I usually do this is an HA pair in each DC (Or metropolitan DC pair). Then use GTM to provide global resilience).
Regarding fancy devices not requiring your network to be up to prevent split brain. Why bother? You can always put in a path that would encompass the same links as the failover clustering using witness. You're not limited to just two links.
- Mohanad
Thank you Hamish so much
