Forum Discussion

Chandru_14793's avatar
Chandru_14793
Icon for Nimbostratus rankNimbostratus
Feb 25, 2011

Custom UDP Monitor

  I need to create a custom UDP monitor, which can Send an input string and waits for a particular output string.     I went to LocalTraffic->Monitors>create newMonitor>UDP     Under A...
config
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hoolio's avatar
hoolio
Icon for Cirrostratus rankCirrostratus
Feb 25, 2011
It looks like this was added in 10.2.0 per CR131196. I guess the original logic is that if LTM doesn't get an ICMP port unreachable message, the service is considered to be up. If you want to check the reply you could either use an external monitor with netcat to send a request or upgrade to 10.2.0 or higher (ideally 10.2.1).

 

 

See SOL6143 for a description of the pre-10.2.0 UDP / ICMP monitor behavior:

 

 

sol6143: UDP health monitor operation

 

http://support.f5.com/kb/en-us/solutions/public/6000/100/sol6143.html

 

 

Aaron