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How to monitor F5 Big-IP Virtual Server Connections



I am trying to use PRTG to monitor the number of "current connections" on a single Virtual Server on the F5 Big-IP's using SNMP. Has anybody been able to do this?

big-ip f5 snmp

Created on Mar 23, 2011 2:14:02 PM

6 Replies

Accepted Answer



The BIG-IP MIB file can be found by logging into the command line interface (via SSH) and looking at the following location:


Next, convert your MIB file to an OID using Paesslers MIB Importer

Look for ltmPoolStatServerCurConns (Oid

Created on Mar 23, 2011 3:45:04 PM

Last change on Mar 23, 2011 4:02:11 PM by  Patrick Hutter [Paessler Support] (7,225) 3 3




Thanks for the reply, I managed to find some mibs in the following location: /usr/share/snmp/mibs. I imported a mib called F5-BIGIP-LOCAL-MIB.txt but the MIB importer went blank.

Created on Mar 23, 2011 4:41:07 PM



If it's a quite big MIB it might take a bit until the importer is finished loading it and the importer might show a blank screen during that time (and also use one CPU for 100%). Please simply let it run.

Created on Mar 23, 2011 4:43:46 PM by  Torsten Lindner [Paessler Support]



Thanks all for your help. It took a while but it did load. I did a partial MIB with ltm pool stat: ... pva current connections and max connections.

Thanks Again

Created on Mar 24, 2011 9:31:19 AM



I am attempting to do something similar to Vikesh.

After importing the F5 Local MIB, I chose to create a new SNMP Library sensor. I choose the Pool I wish to monitor using OID (ltm pool stat server cur conns) from the enumerated list of available pools. The value returned to the sensor varies wildly from a number in the billions to single digit. I excpect a value around 100. Is there any math I need to perform against the returned value? What am I missing?

Created on Aug 1, 2011 9:04:17 PM




Did you success on doing this ? Could you please share what did you do ?

Thanks a lot !

Created on Oct 27, 2014 1:24:33 AM

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