User`s guide

2-10 StorageWorks Fibre Channel Storage Switch Sevice Guide
Port Loopback Test
Pressing <Enter> while Port Loopback Test is selected displays a reminder to
take the Switch offline, if it is not offline. If the message is displayed, take the
Switch offline as described in section Switch Offline.
The Port Loopback Test is an internal test which continues to run until you
press any button. This test checks all of the Switch’s internal firmware and
circuitry including the Switch’s G_Port and FL_Port ASICs.
While the test is running, all interface module front panel LEDs rapidly flicker
green indicating that the test is finding no errors and is processing.
To stop the test, press any button, Aborted is displayed:
Port Loopback Test: Passed
Cross Port Test
The Cross Port Test checks communication between different interface
module ports on the same Switch, the Switch’s G_Port and FL_Port ASIC and
CPU, the interface modules and their GBIC modules. A Switch setup to run
this test must have all ports on the Switch interconnected, as shown in Figure
2-2. G_Ports must connect to
G_Ports
and
FL_Ports
must connect to FL_Ports.
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SHR-1218
Figure 2-2. Switch Set to Run Cross Port Test.