how to verify the fail-over status via cli (tmos)

Sorry for being a bit late on the subject.

To monitor device states and traffic-groups especially during upgrades and other breathtaking operations in real-time I´m simply using the following line:

watch -n 1 -d tmsh show cm traffic-group

It will list the available devices and their state and the current device for each floating traffic-group updated every second. The "-d" switch highlights changes by inverting them.

Regarding the specific question here:

1. legacy failsafe mechanisms (vlan & gateway) may cause a standby/standby

2. check /var/log/ltm for "failsafe" related messages, please

Thanks, Stephan