HP Brocade 4Gb SAN Switch for HP BladeSystem p-Class - Manual (Page 218)

218 Configuring the PID format
4. For the HP StorageWorks SAN Switch 2/8V, SAN Switch 2/16V, SAN Switch 2/32, and SAN
Switch 4/32: issue the following command:
portswap port1 port2
For the Core Switch 2/64 and SAN Director 2/128: issue the following command:
portswap slot1/port1 slot2/port2
5. Verify that the port area IDs have been swapped:
portswapshow
A table is shows the physical port numbers and the logical area IDs for any swapped ports.
6. Disable the port swap feature:
portswapdisable