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Aurel's avatar
Aurel
Icon for Cirrus rankCirrus
Oct 31, 2014

GTM wideip TTL persistence versus member persistence

Hi guys, After checking and reading again, i still didn't picture the meaning of the GTM wideip TTL persistence, which is 3600 by default. The member one is 30 seconds by default. When making nslookup, i did see the 30 seconds TTL on the response, and get it easily. But what the purpose of the 3600 one ? Documentation says that each new request from LDNS will be responded with the same value, but didn't get it. Thank you for your help. Aurel

 

2 Replies

  • ValK's avatar
    ValK
    Icon for Nimbostratus rankNimbostratus
    Oct 15, 2015

    Wide IP persistence is for how long GTM will respond with the same IP to the client/client DNS server queries.

     

    Pool TTL tells client how often run DNS queries. In case one of the pool members fails.

     

    In other words client will resolve DNS record every 30 seconds but only after 3600 seconds client will "possibly" get another pool member IP.