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masya_107998's avatar
masya_107998
Icon for Nimbostratus rankNimbostratus
Jan 29, 2016

Watchdog behavior on the Diameter Virtual server

Is BigIP expected not to send watchdog response message to client if Virtual Server using the diameter profile is disabled.

 

application delivery
BIG-IP
LTM

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  • Daniel_Epperson's avatar
    Daniel_Epperson
    Icon for Employee rankEmployee
    Jan 29, 2016

    If there is no Diameter profile then the Diameter connection does not terminate on the BIG-IP. In that case the DWR would be proxied to the pool.

     

  • Daniel_Epperson's avatar
    Daniel_Epperson
    Icon for Employee rankEmployee
    Feb 01, 2016

    I tested this in 11.6.0-hf5 and 12.0.0-hf1 and the answer is no. BIG-IP continues to answer DWR with DWA for existing connections when the Diameter Virtual Server becomes disabled. New connections are not accepted.

     

    To achieve the desired behavior, you could write an iRule to watch a pool or node status via LB::status and trigger a DIAMETER::drop inside a DIAMETER_INGRESS event. I confirmed that this event does fire for the inbound DWR.