Forum Discussion

Cirrostratus

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

Dario_Garrido

Noctilucent

Jul 12, 2022

Hello Quasin,

[virtual name] -> gives you the name of the current VS.
virtual my_vs -> redirects the traffic to this VS (my_vs)

REF - https://clouddocs.f5.com/api/irules/virtual.html

Qasim

Cirrostratus

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
Noctilucent
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
  Cirrostratus
  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)
  }}
  - Dario_Garrido
    Noctilucent
    Jul 12, 2022
    Avoid using "(" ")". Use this instead:
    
    virtual test_target_vs
    
    Btw, if the VS is located in a different partition than /Common, you need to reference that partition.
    
    virtual /my_partition/my_vs