Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

Qasim's avatar
Qasim
Icon for Cirrostratus rankCirrostratus
Jul 12, 2022

forwarding traffic from one VIP to Another on same LTM (IRULE explanation)

Hi,   I have requirement to forward to traffic from one VIP to another on same ltm. I have found an IRULE on this forum but wondering if some could could explain "Virtual name" part to me? I.e. wha...
application delivery
irule
  • Qasim's avatar
    Qasim
    Icon for Cirrostratus rankCirrostratus
    Jul 12, 2022

    thanks Dario_Garrido,

     

    So that name will be populated automatically or I need to type in the name of "this VS i.e. current VS"?

     

    Regards,

    Qasim

    • Dario_Garrido's avatar
      Dario_Garrido
      Icon for Noctilucent rankNoctilucent
      Jul 12, 2022

      In link provided you have examples of usage. For example:

      when HTTP_REQUEST {
  # If the current VS name is not "my_vs" 
  if {[virtual name] ne "my_vs"} {
    # Then, redirect the traffic to a new VS called "my_vs" 
    virtual my_vs
  } else {
    # If it is "my_vs", then just write a message in the log
    log local0. "endless loop avoided"
  }
}

       

      • Qasim's avatar
        Qasim
        Icon for Cirrostratus rankCirrostratus
        Jul 12, 2022

        Hi Dario,

        I created the IRULE but when assigning to a VS I am getting the following error:

        : Unable to find virtual_server ((test_target_vs)) referenced at line 5: [virtual (test_target_vs)]

         

        the test_target_vs definitely exists on LTM and here is my IRULE:

        when HTTP_REQUEST {
        if { [HTTP::uri] contains "/*" }
        {
        log local0. "internally routing from [virtual name] to (test_target_vs)"
        virtual (test_target_vs)
        }}