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Forum Discussion

Balancing_Harmo's avatar
Balancing_Harmo
Icon for Nimbostratus rankNimbostratus
Nov 23, 2015

Standby unit LTM logs showing down pool while Active unit has none

I have a high availability pair and LTM logs in standby show that my pools are down but in active unit, no such logs are present. I saw SOL11162 which indicates the same scenario, but the article...
application delivery
BIG-IP
nathe's avatar
nathe
Icon for Cirrocumulus rankCirrocumulus
Nov 23, 2015

I'll assume the two boxes are configured the same and synced up (as they are in a HA pair).

Do you have a monitor on the nodes and are they up/down on the Standby as they are on the Active? The monitor traffic comes from the non-floating self IPs on both boxes, are there firewalls in the way which might be blocking traffic? Can you ping the pool member(s) from the Standby bigip?

What do you see if you run a tcpdump on the Standby device, do you see any traffic between the bigip and an example pool member?

tcpdump -nni 0.0 -s0 host  and host

Hope this helps,

N