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Forum Discussion

DarioGB_339840's avatar
DarioGB_339840
Icon for Altostratus rankAltostratus
Apr 16, 2019

Active-Active Colision

Hello. I had a cluster with this initial state: BIG-IP1 -> Active BIG-IP2 -> Standby Because of a power outage on BIG-IP2's datacenter, this device was rebooted and the communication between...
application delivery
BIG-IP
TMOS
Andy_McGrath's avatar
Andy_McGrath
Icon for Cumulonimbus rankCumulonimbus
Apr 16, 2019

First recommend looking over the following K95002127: Troubleshooting BIG-IP failover events.

I tested a similar failover/failback event years ago for a customer (overly worried about a split-brain event occurring) and found if the configuration is in sync then it has to do with the base MAC address of each device.

tmsh show sys hardware | grep -i "base mac"

I think the lower the value the higher the priority to resolve a traffic-group active/active conflict.

Again this was a long time ago and got the info from F5 Support.