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richaed's avatar
richaed
Icon for Cirrus rankCirrus
Feb 12, 2026

LB Connection Limit Detection Method

We have set a connection limit on the load balancer. If there is a way to detect when the upper limit of the connection limit is exceeded, please let us know.

We are considering detection via log monitoring, but we would like to confirm if there are other methods available.

5 Replies

  • pool::status i think in a irules will tell you if any pool members are available and accepting requests

  • Is it possible to monitor the number of connections per VS unit using SNMP traps or resource monitoring?

    • Paulius's avatar
      Paulius
      Icon for MVP rankMVP

      I believe the OID you're looking for is the following but I'm not 100% because I haven't had a chance to test this on my lab F5.

      .1.3.6.1.4.1.3375.2.2.10.13.2.1.3

      The following is something you can check out.

      https://my.f5.com/manage/s/article/K13322

      Additionally, you can pull the MIB information directly from your device to see everything that applies to your specific code version.

      • richaed's avatar
        richaed
        Icon for Cirrus rankCirrus

        Thank you.

        When I checked the status of the relevant virtual server via the GUI during the connection limit, it was displayed as yellow.

        Can you set up an alert to trigger when the value for the following OID becomes 2 (yellow)?

        .1.3.6.1.4.1.3375.2.2.10.13.2.1.2