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AmineZAKARIA's avatar
AmineZAKARIA
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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 Ac...
LTM
LTM F5
persistence
AmineZAKARIA's avatar
AmineZAKARIA
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May 17, 2026

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
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May 28, 2026

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.

  • AmineZAKARIA's avatar
    AmineZAKARIA
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    May 28, 2026

    zamroni777​ ,

    I know, but in case ISP on DC1 went down here the DNS persistence will be flushed, And the objectif i should keep serving the app level from the same backend server even from Ltm of DC2 going through back DCI.

    Regards!

    • Anoop_Jayadharan's avatar
      Anoop_Jayadharan
      Icon for Cirrostratus rankCirrostratus
      Jun 03, 2026

      AmineZAKARIA​ 

      Would you mind sharing a diagram of your set-up? How does the DNS function here? What is the WideIP or DNS LB method? How many BIG-IPs are being monitored? Is it using the built-in BIG-IP monitor? I am curious to see how the re-connected traffic lands on DC2.