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0x0ff_info_1420's avatar
0x0ff_info_1420
Icon for Cirrus rankCirrus
Mar 11, 2015

My VS is unknown (Blue) on my LTM but available on my GTM (Green)

Hi,   I'm working on GTM currently. I'm wondering why when I add a LTM on my GTM and discover the existing VS, my GTM find them and considers they are available (Green) when at the same time, on m...
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0x0ff_info_1420's avatar
0x0ff_info_1420
Icon for Cirrus rankCirrus
Mar 11, 2015

Thanks to you for reply,

 

A monitor can be specified on GTM, and used to check availability. In this case, even without HealthCheck on the LTM Pool (blue pool), it's normal for the GTM to see the VS available (because someone proceed the test). But in my case, there is no monitor at all (LTM or GTM).

 

  • Max_Q_factor's avatar
    Max_Q_factor
    Icon for Cirrocumulus rankCirrocumulus
    Mar 11, 2015
    When you add a LTM server to GTM, even if you do not add a monitor to the LTM the GTM adds the bigip monitor to the server by default
  • 0x0ff_info_1420's avatar
    0x0ff_info_1420
    Icon for Cirrus rankCirrus
    Mar 11, 2015
    I'm not sure the bigip monitor check VS availabilities. In my case, if availability is checked, the VS should be Red because the Real Servers of the LTM pools are dummies servers (so they don't answer). Beside my first question, do you know what exactly, the bigip monitor do ?