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Jim_M's avatar
Jim_M
Icon for Cirrus rankCirrus
Nov 03, 2023

considerations updating a v16 LTM HA pair

I have 2 LTM bigip running 16.1.3.3 in a HA pair.  When i update the passive member to 16.1.4.1 it comes back up as 'offline' and 'disconnected'. The unchanged primary is online (active) + disconnected.

I dont recall seeing this behaviour when i have updated in the past. My recollection is that they come up as standby (not offline) and complain of software version mismatch. Is there something i can check to verify that the updated member is offline because of the software mismatch and not because something is broken?

application delivery

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  • Niels_van_Sluis's avatar
    Niels_van_Sluis
    Icon for MVP rankMVP
    Nov 03, 2023

    Maybe you've used 'Force offline' instead of 'Force to Standby' and the upgraded member came back 'Offline' and 'Disconnected'. The 'Disconnected' part is okay, because it can't sync between two members not running the same software version. 

    I would just check if a 'tmsh load sys config verify' looks okay and check the results of 'tmsh show sys mcp-state', on the upgraded member and bring it online again.