Nimbostratus
CirrostratusThe 1st thing I will check is the config sync ip addresses used and see if if the devices can see each other via ping at least from each config sync ip addresses . Check the config sync self ip address If not mistaken in version 12. upwards the default self ip allow configuration is allowed none. you can change it to allow default which includes the config sync port number then test your config sync again. regarding your second question please read the links below very good material from f5 to guide you understanding the f5 HA concepts
NimbostratusThanks for update and hyperlinks, I am using the 90 days Eval key for my VM setup not sure if this is possible on trial key. Do we have steps or way to get this details/information. please suggest..