Forum Discussion

AmineZAKARIA's avatar
May 16, 2026

Question about source persistence across traffic group

Hello,

Hope you are doing great!

I would like to know if it is supported to mirror persistence between 2 DC's across 2 Traffic Groups, each one is Active on a DC.

DC 1 Active on TG1
DC 2 Active on TG2

Client established connection on DC1, if it reconnected in DC2 traffic should be rerouted to DC1 backend. (There's no application level session synchronization)

Any suggestions would be appreciated!


Thank you.

Regards!

9 Replies

  • Hello AmineZAKARIA​ 

    My question is how a user could end up to a different DC? Is there a GSLB in front?

    You could try cookie persistence.

    Not sure if the built in cookie persistence mechanism will work in this case. But with an irule you could inject a custom cookie an use it later to make load balance decisions. Of course your client should always send the cookie.

    • AmineZAKARIA's avatar
      AmineZAKARIA
      Icon for Cirrus rankCirrus

      Hello Injeyan_Kostas​ 

      Yes there's GSLB.

      Cookie persistence did work, but using source address persistence is not working even with match across option, not sure if there's a way to share persistence between TG except for cookie persistence.

      Regards!

      • zamroni777's avatar
        zamroni777
        Icon for MVP rankMVP

        gslb handles dns request not application layer, e.g. http request.

        if you setup gslb persistence properly, the client's dns request will get same ip in dns response when it asks gslb dc1 or gslb dc2.