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2funky_105078's avatar
2funky_105078
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Apr 22, 2014

GTM: avoiding flapping DNS answers with RTT method

I am in the need to understand how GTM metrics work for GTM LDNS probes.   1) how they can be logged the decision? I am using 11.2 but moving fast to 11.4.1.. :)   2) Lets make an example. if...
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  • Cory_50405's avatar
    Cory_50405
    Apr 23, 2014

    The only solution I could see in your situation is to break your single pool into three pools, and either stick with RTT and enable persistence at the wide IP, or switch to topology. Either one should get you some more consistency.

     

2funky_105078's avatar
2funky_105078
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Apr 23, 2014

Well, let me see if I understand it with an example.

 

Right now, I have configured a wide-IP (like www.example.com) with just 1 Pool associated to it, consisting of 3 Memebers/VIPs: 1 in USA, 1 in EU and 1 in AU.

 

If I got it right, you are suggesting that I could configure 3 Pools associated to this Wide-IP and use using Topology LB to choose among these 3 Pools . But, then in each Pool there is only 1 VIP/Member, so I cannot really use RTT with just 1 VIP inside.

 

Maybe your case is applicable in case we have multiple Members within a Pool, right?