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mbrightside0773's avatar
mbrightside0773
Icon for Nimbostratus rankNimbostratus
Sep 24, 2015

Adding third LTM to cluster - GTM will only see 2 of the 3 devices.

Hi All - pulling hair out with what should be a simple GTM to LTM cluster set up!! Any pointers appreciated!   We have recently expanded our v11.3.0 LTM Cluster to a third unit. Each LTM has a tra...
application delivery
BIG-IP DNS
LTM
gsharri's avatar
gsharri
Icon for Altostratus rankAltostratus
Sep 25, 2015

I opened a case with F5 Support about this very issue in January 2014. Here is the answer I got then and I believe nothing has changed since:

 

Answer From F5 Support: We have linked this issue with bug ID412863. The workaround is to create each VS as a generic server and monitor them using HTTP/TCP/ICMP/etc monitors using the fact that only the active box for a traffic group will answer monitor request. Basically the GTM is not currently ready for more than a 2 unit failover pair of LTM devices