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kohli9harjeev's avatar
kohli9harjeev
Icon for Nimbostratus rankNimbostratus
Mar 22, 2016

LTM Self ip probing a server in GTM

Hi All,

 

Can someone please help me in this scenario.

 

We have three GTMs,two in our HO and third one in our DR office.

 

Now i am trying to integrate LTMs with GTM where I have a pair of LTMs both at perimeter and core.Once integrate Core LTM pair in GTM, the monitor instance of servers starts flapping on GTM.

 

Commands used on GTM after creating "BIg-ip Redundant" server bigip_add x.x.x.x ------ self-ip of Active box of Core LTM pair bigip_add y.y.y.y ------ self-ip of Standby box of Core LTM pair

 

Prober-Pools in GTM HO- Members include self-ip of HO GTM DR - member include self-ip of DR GTM

 

The moment i integrate LTM in GTM,servers starting flapping with following message.

 

Mar 22 11:41:44 HQ-gtm-01 alert gtmd[12489]: 011ae0f2:1: Monitor instance /Common/BARCODE-363 10.25.60.83:0 UP --> DOWN from x.x.x.x (state: timeout) ---------Probed from LTM self-ip which i added

 

Mar 22 11:41:44 HQ-gtm-01 alert gtmd[12489]: 011a4003:1: SNMP_TRAP: Pool /Common/ADNET-BARCODE-POOL member ADNET-BARCODE (ip:port=10.25.60.83:0) state change green --> red ( Monitor /Common/BARCODE-363 from x.x.x.x : state: timeout)

 

Mar 22 11:42:28 HQ-gtm-01 alert gtmd[12489]: 011ae0f2:1: Monitor instance /Common/BARCODE-363 10.25.60.83:0 DOWN --> UP from a.a.a.a (state: success) -------- Probed from GTM self-ip of HO

 

Mar 22 11:43:44 HQ-gtm-01 alert gtmd[12489]: 011ae0f2:1: Monitor instance /Common/BARCODE-363 10.25.60.83:0 UP --> DOWN from y.y.y.y (state: timeout) ---------Probed from LTM self-ip which i added

 

Mar 22 11:43:44 HQ-gtm-01 alert gtmd[12489]: 011a4003:1: SNMP_TRAP: Pool /Common/BAR-Code-SRV member finbarcode (ip:port=10.25.60.83:0) state change green --> red ( Monitor /Common/BARCODE-363 from x.x.x.x : state: timeout)

 

I dont have LTM self-ip included in the Prober Pool but it is still trying to probe the VS and marking the server down and when it probes from GTM self-ip ,it goes successfull.

 

Can someone kindly help me in this scenario if I am missing some configuration and small step.

 

Regards

 

1 Reply

  • Michael_Voight_'s avatar
    Michael_Voight_
    Historic F5 Account

    Difficult to tell without actually seeing the prober pool config. Without prober pools, any device configured as a bigip server in the gtm config can be selected to probe. If there is a bigip device in the same data center as the device being probed.