Normal Power-Up Sequence; Port Connection Problems; Table 42 Corrective Actions - Nortel BayStack 380 Using Manual

Normal power-up sequence

In a normal power-up sequence, the LEDs appear as follows:
1
2
3

Table 42 Corrective actions

Symptom
All LEDs are off.
The Activity LED for a
connected port is off or
does not blink (and you
have reason to believe
that traffic is present).

Port connection problems

You can usually trace port connection problems to either a poor cable connection
or an improper connection of the port cables at either end of the link. To remedy
these types of problems, make sure that the cable connections are secure and that
the cables connect to the correct ports at both ends of the link.
Port connection problems are also traceable to the autonegotiation mode or the
port interface.
After power is applied to the switch, the Pwr (Power) LED turns on within 5
seconds.
The switch initiates a self-test, during which the port LEDs display various
patterns to indicate the progress of the self-test.
After the self-test, the remaining port LEDs indicate their operational status,
as described in Table
Probable cause
The switch is not receiving AC
power.
The fans are not operating or
the airflow is blocked, causing
the unit to overheat.
The switch is experiencing a
port connection problem.
The switch's link partner is not
autonegotiating properly.
42.
Corrective action
Verify that the AC power cord is fastened securely
at both ends and that power is available at the AC
power outlet.
Verify that there is sufficient space for adequate
airflow on both sides of the switch.
Note:
switch must not exceed 40°C (104°F). Do
not place the switch in areas where it can
be exposed to direct sunlight or near
warm air exhausts or heaters.
See "Port connection
Using the BayStack 380 10/100/1000 Switch
Chapter 4 Troubleshooting
Operating temperature for the
problems" next.
175