Specifications

Appendix A. Locating the worldwide port name (WWPN)
This chapter tells you how to locate the WWPN value for a fibre-channel adapter on
the following host systems:
v Compaq
v Hewlett-Packard 9000
v IBM eServer AS/400 and iSeries
v IBM eServer NUMA-Q or xSeries 430
v IBM eServer RS/6000 and pSeries
v Novell NetWare
v Sun
v Windows NT 4.0
v Windows 2000
Fibre-channel port name identification
The WWPN consists of exactly 16 hexadecimal characters (0 - 9 and A - F). The
ESS uses it to uniquely identify the fibre-channel adapter card that is installed in
your host system. The ESS automatically finds the WWPN for your host
fibre-channel adapter when you attach your host system to the ESS.
Note: If your host uses more than one fibre-channel adapter to connect to your
ESS, you must add multiple entries to the host list for this host. You must
add one for each fibre-channel adapter. Each adapter will have its own
unique WWPN.
The format and content of the fibre-channel port identifier are determined by the
manufacturer of the link control facility for the applicable fibre-channel port. The
identifier is an eight-byte field, which the fibre-channel protocols use to uniquely
identify the fibre-channel port.
You can manually locate a unique worldwide port name for the ESS by performing
the steps in the following sections.
Locating the WWPN for a Compaq host
To locate the WWPN for a Compaq host system, perform the following steps:
1. From the console prompt, type: P0>>>wwidmgr -show ada
See Figure 62 for an example of what displays when you type the
P0>>>wwidmgr -show command.
You might receive the following errors:
Probing timeout
item adapter WWN Cur. Topo Next Topo
[ 0] pga0.0.0.7.1 1000-0000-c922-d469 FABRIC FABRIC
[ 1] pgb0.0.0.8.1 2000-0000-c922-6a63 FABRIC FABRIC
[9999] All of the above.
Figure 62. Example of the output from the Compaq wwidmgr -show command
© Copyright IBM Corp. 1999, 2001 153