F5 is upgrading its customer support chat feature on My.F5.com. Chat support will be unavailable from 6am-10am PST on 1/20/26. Refer to K000159584 for details.

Forum Discussion

Amith_Rajgopal_'s avatar
Amith_Rajgopal_
Icon for Employee rankEmployee
Jun 08, 2021

Maintaining persistancy based on Unique transaction ID for 2 different URI

Team,   Explaining a bit about scenario. Customer has requirement of sending certain traffic to specific node within a pool for 2 different URI with same transactionID (attaching snapshot for 2 sam...
application delivery
BIG-IP
LTM
set
Daniel_Wolf's avatar
Daniel_Wolf
Icon for MVP rankMVP
Jun 08, 2021

Hi Amith,

I think your iRule is missing the part when you add the persistence record. Example:

persist add uie  [findstr [HTTP::uri] "urn:txnid:" 10 ";"]

Check here:

https://support.f5.com/csp/article/K7392

and here:

https://clouddocs.f5.com/api/irules/persist.html

With your iRule you are looking up a record that was never created.

Furthermore you can list existing persistence records and verify that your iRule works, see here:

https://clouddocs.f5.com/cli/tmsh-reference/v15/modules/ltm/ltm_persistence_persist-records.html

KR

Daniel

Amith_Rajgopal_'s avatar
Amith_Rajgopal_
Icon for Employee rankEmployee
Jun 08, 2021

Thanks Daniel for response.

 

I am under impression persist add uie is to be used for http_response and we are not inspecting response of the server.

 

Am i going wrong in my understanding?

  • Daniel_Wolf's avatar
    Daniel_Wolf
    Icon for MVP rankMVP
    Jun 09, 2021

    You are right with your understanding, it must be inserted as part of the response.