Port Connection Problems; Autonegotiation Modes - Nortel 2000 Using Manual

Table 60 Corrective actions (continued)
Symptom
The Status LED is
blinking.

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.

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).
The Business Policy Switch negotiates port speeds according to the IEEE 802.3u
autonegotiating standard. The switch adjusts (autonegotiates) its port speed and
duplex mode to match the best service provided by the connected station, up to
100 Mb/s in full-duplex mode as follows:
• If the connected station uses a form of autonegotiation that is not compatible
with the IEEE 802.3u autonegotiating standard, the Business Policy Switch
cannot negotiate a compatible mode for correct operation.
• If the autonegotiation feature is not present or not enabled at the connected
station, the Business Policy Switch may not be able to determine the correct
duplex modes.
Probable cause
A nonfatal error occurred
during the self-test.
Chapter 6 Troubleshooting 333
Corrective action
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.
Using the Business Policy Switch 2000 Version 1.2