HP StorageWorks 2.32 Edge Switch - Manual (Page 134)

Using maintenance features 134
Running 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 appropriate service manual for your Edge
Switch.
Swapping ports (FICON Management Style)
NOTE: This procedure applies only to the Edge Switch 2/32. FICON Management Style is not
available on the Edge Switch 2/24.
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 04 and the current address for
port 1 is 05, you can swap so that the address for port 0 is 05, and the address for port 1 is 04.
NOTE: Before swapping ports, make sure that the system administrator varies devices offline that
are attached to the ports whose addresses you are going to swap. Ports to be swapped are
blocked during this procedure, because swapping ports is disruptive to port operation.
To swap ports, use the following steps: