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CSOC_146480's avatar
CSOC_146480
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Jan 18, 2016

GTM wide ip pool persistence and one pool with 3 x LTM VS

Hello,   Our user WWW clients have three possible routes to the internet and are using GTM to resolve proxy name in a pac file to to a virtual server [VS] in a pool in a wide IP. There are three B...
application delivery
BIG-IP
BIG-IP DNS
James_Thomson_1's avatar
James_Thomson_1
Historic F5 Account

When you configure WideIP persistence as described here: link text It will persist a user to the IP address that is selected for them, not the pool.

 

The GTM however only sees the IP address of the DNS server that sent it a request unless your user's DNS entry on their machine is the GTM.

 

Question: On your user's laptop or desktop, are they pulling IP's from DHCP? If so, what DNS server are they getting?

 

If the answer is the GTM, then you are fine.

 

If the answer is another DNS server and everyone in your company gets the same DNS server, then that could be a problem as the GTM will only every see that DNS server as a requestor.

 

Let me know if that makes sense and answers your question.

 

CSOC_146480's avatar
CSOC_146480
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Jan 28, 2016
We are changing the way this is setup now to proxy to the next hop device. Hopefully can avoid this issue in that solution.