Forum Discussion

DeVon_Jarvis's avatar
DeVon_Jarvis
Icon for Altostratus rankAltostratus
Oct 16, 2009

DHCP Health Monitor??

We are setting up LTM to load balance Windows DHCP (Unicast only, forwarded from Cisco Routers via BOOTP Helper address). I need to health check the two DHCP servers in the pool. I did a search and fo...
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Nicola_DT's avatar
Nicola_DT
Icon for Nimbostratus rankNimbostratus
May 26, 2011
Sometimes the script returns me this error, and no up or down is returned in this situation:

 

 

./dhcp_monitor 172.xx.yy.9 67 172.xx.yy.11

 

Can not watch: Address already in use at ./dhcp_monitor line 305

 

Can not watch: Address already in use at ./dhcp_monitor line 307

 

 

 

 

 

Timeout is about 9 seconds, then the script returns "down", I have set the poll every 30 seconds and timeout to 91...

 

 

 

Another strange behaviour is after a bigstart restart the pool is set to red (down), after a reboot the pool is set to green, monitor succeeds.

 

 

Any tips ?

 

 

Thanx again,

 

Nicola.