HP StorageWorks 2.64 Director Switch - Manual (Page 140)

Using maintenance features 140
Port diagnostics
The Port Diagnostics option enables you to run internal and external loopback tests on any port or
all ports on a port card. At the start of the loopback test, the port or port card can be online,
offline, blocked, or unblocked
• Internal loopback test —An internal loopback test checks port circuitry, but does not check
fiber-optic components of a port transceiver. The test is performed with a device attached to the
port, but the test momentarily blocks the port and is disruptive to the attached device.
An optical transceiver (SFP or XFP) must be installed in the port during the test. A device can
remain connected during the test.
• External loopback test —An external loopback test checks port circuitry, including
fiber-optic components of a port transceiver. To perform the test, the attached device must be
acquiesced and disconnected from the port, and a multimode or singlemode loopback plug
must be inserted in the port receptacle.
To use this option, follow the detailed steps in the HP StorageWorks Director 2/64 service manual
for the Director 2/64 and the HP StorageWorks Director 2/140 service manual for the Director
2/140.
Swap ports (FICON management style)
This procedure applies only to a director that is using FICON Management Style.
Select Swap Ports to display the Swap Ports dialog box. Use this dialog box to swap one port
address for another. For example, if the current address for port 0 is currently 04 and the address
for port 1 is currently 05, you can swap so that the address for port 0 has address 05 and port 1
has address 04.
To swap ports, use the following steps:
1. Select Swap Ports from the Maintenance menu on the menu bar. The Swap Ports dialog box
appears, as shown in Figure 65 .
Figure 65 Swap Ports dialog box
2. Enter the first address (in hexadecimal format).
3. If you want to unblock the port, select Unblock after swap option. Note that ports are
automatically blocked during the swap process.
4. Enter the second address (in hexadecimal format).