Troubleshooting; Led Indications Of Problems; Table 17 Led Problem Indicators - Nortel Passport 8000 Series Installing And Maintaining

88 Chapter 4 Operating the Passport 8000 Series switch

Troubleshooting

The following sections provide troubleshooting information for some of the more
common problems that you may encounter with the Passport 8000 Series switch.
Topic

LED indications of problems

Apparent module failure
Failure to get a login prompt from the Console port
Cable connection problems
Autonegotiation mode problems for Passport 8100 modules
LED indications of problems
Table 17
suggests corrective action.

Table 17 LED problem indicators

Symptom
Green AC power supply
LEDs are off.
The Link/Activity LED for a
connected port is off or
does not blink (and you
believe that traffic is
present).
The Link/Activity LED blinks
continuously.
The Online LED is steady
amber for longer than 3
minutes.
316314-D Rev 00
lists possible problems indicated by the LEDs on the switch modules and
Probable cause
The switch is not receiving
AC power or the power supply
has failed.
The switch is experiencing a
port connection problem, or
the switch's link partner is not
autonegotiating properly.
There may be a high traffic
load or possible packet
broadcast storm.
Software incompatibility
exists, or the module cannot
communicate with the master
module over the backplane.
Corrective action
Verify that each AC power cord is fastened
securely at both ends and that power is
available at each AC power outlet. Plug in a
device such as a lamp to ensure that the
power outlet is operational. Verify that each
power supply is turned on.
Verify that the cable connections to the link
partner are correct. Verify port configuration
parameters for both ends of the connection.
Move the cable to another port to see whether
the problem occurs on the new port.
Verify port configuration parameters for both
ends of the connection.
Use the show log command to check the
system log for indications of communication
problems. Use the boot command to
download a new software image.
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