Nortel business policy switch 2000, User Manual

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Chapter 6 Troubleshooting 355
Using the Business Policy Switch 2000 Version 2.0
Autonegotiation modes
Port connection problems can occur when a port (or station) is connected to
another port (or station) that is not operating in a compatible mode (for example,
connecting a full-duplex port on one station to a half-duplex port on another
station).
Table 62 Corrective actions
Symptom Probable cause Corrective action
All LEDs are off. The switch is not receiving AC
power. Verify that the AC power cord is fastened securely
at both ends and that power is available at the AC
power outlet.
The fans are not operating or
the airflow is blocked, causing
the unit to overheat. Verify that there is sufficient space for adequate
airflow on both sides of the switch.
Note:
Operating temperature for the
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.
The Activity LED for a
connected port is off or
does not blink (and you
have reason to believe
that traffic is present). The switch is experiencing a
port connection problem. See “Port connection problems ” next.
The switch’s link partner is not
autonegotiating properly.
The Status LED is off. A fatal error was detected by
the self-test. Cycle the power to the switch (disconnect and
then reconnect the AC power cord).
If the problem persists, replace the switch.
The Status LED is
blinking. A nonfatal error occurred
during the self-test. Cycle the power to the switch (disconnect and
then reconnect the AC power cord).
If the problem persists, contact the Nortel
Networks Technical Solutions Center.
Note: You cannot disable autonegotiation using the BPS2000-1GT or
BPS2000-2GT MDA ports; you cannot enable autonegotiation using any
fiber ports.