POP3 Monitors fails
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