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TiagoBecker_255's avatar
TiagoBecker_255
Icon for Nimbostratus rankNimbostratus
Mar 24, 2016

GTM/LTM persistence error.

Hi all, this is my first post here, been following the forum for a good while now.   As so, the first question already seems to be a tricky one (I searched for this but failed to find anything). ...
application delivery
BIG-IP
LTM
IanB's avatar
IanB
Icon for Employee rankEmployee
Mar 31, 2016

When you say 3DNS, are you actually referring to GTM (or BigIP DNS), or are you still running version 4 code ?

 

The clients are going to make DNS requests to the GTM for the IP address of the virtual they need to connect to. There's persistence that can be applied to the WideIP pool settings, but what that's doing is persisting the same answer back to the same local DNS server. If you clients are making DNS requests that are hitting the GTM from more than one local DNS server, then they could be given different results.

 

The cookie persistence doesn't really come into it - that's only going to be presented to the pool member once the data centre (the wideip name resolution) has already been selected.