ST-500 INSTALLATION GUIDE
Page 3-1
CHAPTER 3
TROUBLESHOOTING
This chapter provides troubleshooting information based on the condi-
tion of the LANVIEW LEDs on the transceiver. The troubleshooting infor-
mation consists of some of the most common potential problems and
solutions. If a problem persists after performing the recommended cor-
rective actions, contact Cabletron Systems Technical Support.
3.1
LANVIEW LEDs
The condition of the LANVIEW LEDs provides valuable troubleshooting
information about how the system is operating. Refer to Chapter 2,
Table 2-1, for the LANVIEW LED conditions that indicate normal opera-
tion. If the LANVIEW LEDs do not indicate normal operation, proceed to
the next section, Troubleshooting.
3.2
Troubleshooting
The conditions described in Table 3-1 apply only when a host system is
attached and transmitting data packets. Two Ethernet testers, such as
the Cabletron Systems LAN Specialist network monitoring device, can
be used to exchange data packets and provide more comprehensive
testing.
Observe the LANVIEW LEDs on more than one transceiver to determine
if the problem is with an individual node or if it is common to the network.
When similar indications appear at more than one station, the problem
is most likely a network problem. If the symptoms are observed at only
one station, chances are the problem is with that node.
Note:
The SQE LED is not discussed here, since the SQE LED is on with
SQE enabled and off with SQE disabled. If, after setting the SQE
configuration, the LED does not indicate the proper setting, the problem
is in the transceiver.
