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Forum Discussion

sathish_2826's avatar
sathish_2826
Icon for Nimbostratus rankNimbostratus
Jan 07, 2019

Irule behavior when virtual servers are down

I know that when a virtual server is manually disabled, then no traffic is allowed to it, the irules attached to it won't be executed, i wanted to know, if the virtual server is in down state because...
application delivery
iRules
Lee_Sutcliffe's avatar
Lee_Sutcliffe
Icon for Nacreous rankNacreous
Jan 07, 2019

iRules are applied to a virtual server (VS), so if a VS has been marked down as a result of pool members being unavailable then the iRule will not be executed.

 

If the virtual server handles TCP traffic, then the default behavior is to respond to a request with a TCP RST in the event no pool members are available - as the connection is reset, there are no events for the iRule to execute, thus the iRule doesn't not execute under this condition.

 

https://support.f5.com/csp/article/K9812