FAQ

How long does it take to detect a node failure when using ADN load balancing?

FAQ ID:    FAQ1562
Version:    1.0
Status:    Published
Published date:    09/12/2011
 

Answer

 

Deployment Information:

The ProxySG appliance is acting as a transparent load-balancer for an ADN deployment or has multiple ADN-concentrators in ADN/connection-forwarding cluster.

Answer:

It can take up to 30 seconds to detect the failure of an 'accelerator' node (i.e. a concentrator in the load-balancing group).

 


Background Information: The ProxySG appliance (the ADN manager) checks for a heartbeat from all nodes in the ADN network every 15 seconds. If one is declared 'dead' by the ADN manager, the transparent load-balancer ProxySG appliance searches for an alternate node. 


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