HP A7533A HP StorageWorks Fabric OS 6.x administrator guide (5697-0015, May 20 - Page 470
Converting port number to area ID
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Before changing the PID format, determine if host reboots will be necessary. The section "Host reboots" on page 464 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] Converting port number to area ID Except for the following cases, the area ID is equal to the port number: • 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, % 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. Figure 45 shows a 4/256 SAN Director with Extended Edge PID. 470 Configuring the PID format