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Forum Discussion

helenio's avatar
helenio
Icon for Nimbostratus rankNimbostratus
Feb 27, 2014

HA failover with no session lost is possible ?

Hello I have Active/Standby HA configuration on our BIG-IP LTM appliance. I'm not able to figure out if forcing a failover I'll lose client session or not.   doing "(tmos) show sys connection cs-c...
management
Mike_61663's avatar
Mike_61663
Icon for Cirrus rankCirrus
Feb 27, 2014

If you're mirroring connections between the BIG-IPs then those connections should persist after failover. The general recommendation is for long lived connections like SSH and FTP that you would want to mirror those connections but for short lived connections like HTTP it's generally not worth the overhead.

 

You have to configure mirroring between the devices in the cluster and then enable it for each virtual server that you want to use it. It's not enabled by default.

 

Check out the following solution doc for far more information on the topic. SOL13478 - Overview of connection and persistence mirroring (11.x)