Specifications

3–16 Controller and Host Addressing
In a subsystem with two controllers in transparent failover mode, the controller
port IDs increment as follows:
■ Controller A and controller B, port 1—worldwide name + 1
■ Controller A and controller B, port 2—worldwide name + 2
For example, using the worldwide name of 5000-1FE1-FF0C-EE00, the following
port IDs are automatically assigned and shared between the ports as a REPORTED
PORT_ID on each port:
■ Controller A and controller B, port 1—5000-1FE1-FF0C-EE01
■ Controller A and controller B, port 2—5000-1FE1-FF0C-EE02
In a subsystem with two controllers in multiple-bus failover mode, the port IDs are
separate from each other and are not shared, incrementing as follows:
■ Controller B, port 1—worldwide name + 1
■ Controller B, port 2—worldwide name + 2
■ Controller A, port 1—worldwide name + 3
■ Controller A, port 2—worldwide name + 4
For example, using the worldwide name of 5000-1FE1-FF0C-EE00, the following
port IDs are automatically assigned and shared between the ports as a REPORTED
PORT_ID on each port:
■ Controller B, port 1—5000-1FE1-FF0C-EE01
■ Controller B, port 2—5000-1FE1-FF0C-EE02
■ Controller A, port 1—5000-1FE1-FF0C-EE03
■ Controller A, port 2—5000-1FE1-FF0C-EE04
Use the CLI command, SHOW controller, to display the subsystem’s worldwide
name. The CLI uses the term node ID for worldwide names. When you enter the
SHOW command, the subsystem worldwide name (node ID) displays as the
NODE_ID and will look like the following:
5000-1FE1-FF0C-EE00