Domain ID and Domain ID Lock
The domain ID is a unique Fibre Channel identifier for the switch module. The Fibre Channel address consists of the domain ID, port ID, and the Arbitrated Loop Physical Address (ALPA). The maximum number of switch modules within a fabric is 239, with each switch having a unique domain ID.
Switch modules come from the factory with the domain IDs unlocked. This means that if there is a domain ID conflict in the fabric, the switch module with the highest principal priority, or the principal switch, will reassign any domain ID conflicts and establish the fabric. If you lock the domain ID on a switch module and a domain ID conflict occurs, the switch module with the higher WWN will be isolated as a separate fabric, and the
If you connect a new switch module to an existing fabric with its domain ID unlocked and a domain conflict occurs, the new switch module will be isolated as a separate fabric. However, you can remedy this by resetting the new switch module or taking it offline then back online. The principal switch module will reassign the domain ID, and the switch will join the fabric.
✏NOTE
Domain ID reassignment is not reflected in zoning that is defined by domain ID and port number pair. You must reconfigure zones that are affected by domain ID reassignment.
Broadcast support
Broadcast is supported by the switch module, which enables TCP/IP support. Broadcast is implemented using the proposed standard specified in
In-band management
106Intel Blade Server Switch Module SBCEFCSW Management and User’s Guide