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Sonny's avatar
Sonny
Icon for Cirrus rankCirrus
Aug 23, 2023
Solved

DC failover test via GTM

Trying to get some help..seeing what might be the issue. I have a VS in DC1 and a VS in DC2. I have the GTM configured between both DC1 - 2. When I tested the failover by disabling the VS in DC1, I n...
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  • Sonny's avatar
    Sonny
    Aug 30, 2023

    Update: The issue was the GTM monitoring...setting it to the iquery(bigip) would mark it offline. Thus, it was set for icmp. 0n the DC1 pair, 02 didn't have the same CAs as 01. Once I imported the CAs, I was able to set the monitoring to iquery. Works now.

Mohamed_Ahmed_Kansoh's avatar
Mohamed_Ahmed_Kansoh
Icon for MVP rankMVP
Aug 24, 2023

Hi Sonny , 
I checked F5 bug scrub tracker , but I didn't find bug related to your issue. 

I would recommend >>> 
Try to install your UCS in a test environment bigip lab , and try to disable the VS and check the pool member status. 

or try to upgrade to v15.1.x latest point release , maybe you are hitting in unidentified bug for v13.1.5. 

Sonny's avatar
Sonny
Icon for Cirrus rankCirrus
Aug 24, 2023

Update: I opened a ticket with F5 and it looks the server list monitoring was set to ICMP instead bigip on the GTM. After making the change, looks like some blockage on port 4353.

  • Mohamed_Ahmed_Kansoh's avatar
    Mohamed_Ahmed_Kansoh
    Icon for MVP rankMVP
    Aug 24, 2023

    oh ! well 

    Test it and let me know if this solved your issue or not 

    Thanks