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chic_cat_324145's avatar
chic_cat_324145
Icon for Altocumulus rankAltocumulus
Aug 11, 2017

GTM RTT load balancing

Hi folks, Got some problems with GTM setup. We have 3 data centers, we set up to use RTT as a load balancing. When I do query directly to F5 (external listener) to a specific wide ip, it falls back to DNS. How to make it work with RTT? May be I'm missing something. Thanks!

 

application delivery
BIG-IP DNS
devops

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  • Stanislas_Piro2's avatar
    Stanislas_Piro2
    Icon for Cumulonimbus rankCumulonimbus
    Aug 12, 2017

    Hi,

     

    Which lb method did you configure as alternate?

     

    The first request from a new ip will fail until ldns probing done!

     

    Probing is not on the fly but new ip is added to probing table.

     

    You have to look at your gtm settings which protocol is used for ldns (ldns is the dns server which forward and cache client request) probing. (Dns, Icmp, ...)