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wassim_97659's avatar
wassim_97659
Icon for Nimbostratus rankNimbostratus
Apr 19, 2011

POP3 Monitors fails

Hey guys,

 

 

On GTM I'm running 10.2.0, the POP3 monitors against cisco load balancer keep flapping Up and Down.

 

I tried different configuration as below. Notice the time it takes the monitor to success after the failure. it's somehow consistent for each case..

 

 

 

//Interval 20 sec ,Timeout 120 sec, Probe Timeout 5 >>>> Time to success about 16 sec after failure.

 

Apr 19 12:05:04 local/glb01so alert gtmd[2156]: 011ae0f2:1: Monitor instance POP3-SIDC-vms017 192.168.50.11:110 UP --> DOWN from 192.168.12.144 (state: timeout)

 

Apr 19 12:05:20 local/glb01so alert gtmd[2156]: 011ae0f2:1: Monitor instance POP3-SIDC-vms017 192.168.50.11:110 DOWN --> UP from 192.168.12.144 (state: success)

 

Apr 19 12:15:24 local/glb01so alert gtmd[2156]: 011ae0f2:1: Monitor instance POP3-SIDC-vms017 192.168.50.11:110 UP --> DOWN from 192.168.12.144 (state: timeout)

 

Apr 19 12:15:39 local/glb01so alert gtmd[2156]: 011ae0f2:1: Monitor instance POP3-SIDC-vms017 192.168.50.11:110 DOWN --> UP from 192.168.12.144 (state: success)

 

Apr 19 12:16:44 local/glb01so alert gtmd[2156]: 011ae0f2:1: Monitor instance POP3-SIDC-vms017 192.168.50.11:110 UP --> DOWN from 192.168.12.144 (state: timeout)

 

Apr 19 12:17:00 local/glb01so alert gtmd[2156]: 011ae0f2:1: Monitor instance POP3-SIDC-vms017 192.168.50.11:110 DOWN --> UP from 192.168.12.144 (state: success)

 

 

 

// Interval 30 sec,Timeout 120 sec, Probe Timeout 5 >>> Time to success about 26 sec after failure

 

Apr 19 10:35:31 local/glb01so alert gtmd[2156]: 011ae0f2:1: Monitor instance POP3-SIDC-vms017 192.168.50.11:110 UP --> DOWN from 192.168.12.144 (state: timeout)

 

Apr 19 10:35:57 local/glb01so alert gtmd[2156]: 011ae0f2:1: Monitor instance POP3-SIDC-vms017 192.168.50.11:110 DOWN --> UP from 192.168.12.144 (state: success)

 

Apr 19 10:36:31 local/glb01so alert gtmd[2156]: 011ae0f2:1: Monitor instance POP3-SIDC-vms017 192.168.50.11:110 UP --> DOWN from 192.168.12.144 (state: timeout)

 

Apr 19 10:36:57 local/glb01so alert gtmd[2156]: 011ae0f2:1: Monitor instance POP3-SIDC-vms017 192.168.50.11:110 DOWN --> UP from 192.168.12.144 (state: success)

 

 

 

// Interval 10 sec,Timeout 120 sec, Probe Timeout 5>> Time to success about 5-6 sec after failure

 

Apr 19 10:53:42 local/glb01so alert gtmd[2156]: 011ae0f2:1: Monitor instance POP3-SIDC-vms017 192.168.50.11:110 UP --> DOWN from 192.168.12.144 (state: timeout)

 

Apr 19 10:53:48 local/glb01so alert gtmd[2156]: 011ae0f2:1: Monitor instance POP3-SIDC-vms017 192.168.50.11:110 DOWN --> UP from 192.168.12.144 (state: success)

 

Apr 19 10:54:42 local/glb01so alert gtmd[2156]: 011ae0f2:1: Monitor instance POP3-SIDC-vms017 192.168.50.11:110 UP --> DOWN from 192.168.12.144 (state: timeout)

 

Apr 19 10:54:48 local/glb01so alert gtmd[2156]: 011ae0f2:1: Monitor instance POP3-SIDC-vms017 192.168.50.11:110 DOWN --> UP from 192.168.12.144 (state: success)

 

Apr 19 11:07:02 local/glb01so alert gtmd[2156]: 011ae0f2:1: Monitor instance POP3-SIDC-vms017 192.168.50.11:110 UP --> DOWN from 192.168.12.144 (state: timeout)

 

Apr 19 11:07:08 local/glb01so alert gtmd[2156]: 011ae0f2:1: Monitor instance POP3-SIDC-vms017 192.168.50.11:110 DOWN --> UP from 192.168.12.144 (state: success)

 

 

 

 

 

//I Increased the Prob timeout to 20.

 

// Interval 20 sec,Timeout 120 sec, Probe Timeout 20>> Time to success about 1 sec after failure

 

Apr 19 15:02:37 local/glb01so alert gtmd[2156]: 011ae0f2:1: Monitor instance POP3-SIDC-vms017 192.168.50.11:110 UP --> DOWN from 192.168.12.144 (state: timeout)

 

Apr 19 15:02:38 local/glb01so alert gtmd[2156]: 011ae0f2:1: Monitor instance POP3-SIDC-vms017 192.168.50.11:110 DOWN --> UP from 192.168.12.144 (state: success)

 

Apr 19 15:14:17 local/glb01so alert gtmd[2156]: 011ae0f2:1: Monitor instance POP3-SIDC-vms017 192.168.50.11:110 UP --> DOWN from 192.168.12.144 (state: timeout)

 

Apr 19 15:14:18 local/glb01so alert gtmd[2156]: 011ae0f2:1: Monitor instance POP3-SIDC-vms017 192.168.50.11:110 DOWN --> UP from 192.168.12.144 (state: success)

 

 

 

 

//I Increased the Prob timeout to 21.

 

// Interval 20 sec,Timeout 120 sec, Probe Timeout 21>> Time to success about 20 sec after failure

 

Apr 19 15:51:48 local/glb01so alert gtmd[2156]: 011ae0f2:1: Monitor instance POP3-SIDC-vms017 192.168.50.11:110 UP --> DOWN from 192.168.12.144 (state: timeout)

 

Apr 19 15:52:08 local/glb01so alert gtmd[2156]: 011ae0f2:1: Monitor instance POP3-SIDC-vms017 192.168.50.11:110 DOWN --> UP from 192.168.12.144 (state: success)

 

Apr 19 15:59:48 local/glb01so alert gtmd[2156]: 011ae0f2:1: Monitor instance POP3-SIDC-vms017 192.168.50.11:110 UP --> DOWN from 192.168.12.144 (state: timeout)

 

Apr 19 16:00:08 local/glb01so alert gtmd[2156]: 011ae0f2:1: Monitor instance POP3-SIDC-vms017 192.168.50.11:110 DOWN --> UP from 192.168.12.144 (state: success)

 

 

 

 

 

 

Any idea?

 

 

 

Thanks

 

 

 

 

 

 

config
design
  • Austin_Geraci's avatar
    Austin_Geraci
    Icon for MVP rankMVP
    May 21, 2011
    How is the routing set up between the two boxes? Can you run some simple ping and traceroutes against the host to ensure consistent connectivity between the two? From there you can move on to troubleahooting pop3..