Resolving a bind race

A race occurs when IMS and another logical unit simultaneously send BIND requests to each other and the two half-session names are mirror images.

That is, the primary logical unit name and session qualifier concatenated with the secondary logical unit name and session qualifier of one side is equal to the primary logical unit name and session qualifier concatenated with the secondary logical unit name and session qualifier of the other side. The logical unit that wins and becomes primary is the one whose name (the primary logical unit name taken from each half-session name) is at the top of the standard collating sequence. This test prevents both sides from rejecting each other, resulting in no session.