Forum Discussion

sinu_121261's avatar
sinu_121261
Icon for Nimbostratus rankNimbostratus
Jan 29, 2014

Fast failover in GTM.

Hello,   I have a wideip config and its using bigip monitor and default ttl 30.     We need fast switching to second pool member. Any idea to implement fast switching between pool membe...
sinu_121261's avatar
sinu_121261
Icon for Nimbostratus rankNimbostratus
Jan 29, 2014

Hello,

 

Thanks cory for the update, yes we are using ltms under GTM sync group and using bigip iquiry monitors. I have already created custom monitors in LTM.

 

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I am checking the possibility for fast switching in GTM end also using bigip monitor, what about ttl change?

 

  • Cory_50405's avatar
    Cory_50405
    Icon for Noctilucent rankNoctilucent
    Jan 29, 2014
    Okay, so this LTM monitor is what is going to ultimately mark your members up or down. Your LTM will inform your GTM right away when pool member status changes. If you want to adjust the timing at which failed members are detected, lowering the values on your LTM monitor will do it. Adjusting DNS TTL could have an impact, though it would depend on how many nodes sit behind each LTM and how often they have issues.