Converting Port Number To Area Id; Performing Pid Format Changes - HP A7533A - Brocade 4Gb SAN Switch Base Administrator's Manual

Before changing the PID format, determine whether host reboots will be necessary. The section
reboots" on page 452 summarizes the situations that may require a reboot.
switch:admin> switchdisable
switch:admin> configure
Configure...
Fabric parameters (yes, y, no, n): [no] y
Domain: (1..239) [1]
BB credit: (1..27) [16]
R_A_TOV: (4000..120000) [10000]
E_D_TOV: (1000..5000) [2000]
WAN_TOV: (1000..120000) [0]
Data field size: (256..2112) [2112]
Sequence Level Switching: (0..1) [0]
Disable Device Probing: (0..1) [0]
Suppress Class F Traffic: (0..1) [0]
SYNC IO mode: (0..1) [0]
Switch PID Address Mode: (0..2) [1] < Set mode number here.
Per-frame Route Priority: (0..1) [0]
Long Distance Fabric: (0..1) [0]
IMPORTANT:
page 453 for details on the supported PID format for the Fabric OS version that you are running.

Converting port number to area ID

The area ID is equal to the port number except for the following cases:
• When you perform a port swap operation.
When you enable Extended Edge (also known as displaced PID) PID on the director.
•
If you are using Extended Edge PID format (for example, the 4/256 SAN Director with configuration option
5) and would like to map the output of the port number to the area ID, use the following formula (for ports
0–127):
a = (p + 16) % 128
where:
a is the area, p is the port number, and% is the modulus (or remainder)
0 <= p < 128
When the port number is greater than or equal to 128, the area ID and port number are the same.

Performing PID format changes

There are several routine maintenance procedures which might result in a device receiving a new PID.
Examples include, but are not limited to:
• Changing compatibility mode settings
• Changing switch Domain IDs
• Merging fabrics
• Relocating devices to new ports or new switches (that is, for Add, Move, Change type operations)
• Updating the core PID format
• Using hot spare switch ports to deal with failures
In every case where devices employ static PID binding, any such procedure becomes difficult or impossible
to execute without downtime.
458 Configuring the PID format
Per the example above, not all PID modes are compatible. See
"Host
"Selecting a PID format" on