HP AA-RTDRB-TE - Manual (Page 111)

Operating and Managing Products and Parts
111 Embedded Web Server User Guide
Note: To identify port numbers on cards that you want to test, drag the mouse cursor
across the cards in the Unit view. A label displays with the port number.
1. Enter a port number in the Targeted Port Number field.
2. Click the arrow on the Diagnostic Test drop-down list to display the available
tests (Internal Loopback and External Loopback), then click a test to
choose it.
3. Click Start Port Diagnostics. Port beaconing automatically initiates on the
ports that you choose for loopback diagnostics ( Figure 40 ). The test usually
lasts 30 seconds.
Figure 40: Diagnostics test in progress
Caution: When disconnecting a fiber optic cable to install an external
loopback plug, make sure that you reconnect the cable to the same port after
running the external loopback test.
The port's amber LED continues to beacon during the test. If running an
internal loopback test, the green LED is off. If running an external loopback
test, the green LED is on. Test status displays in the message window and the
results display in the status area bar.