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Using LANVIEW
IRM3 User’s Guide
Page 5-3
CLN
(Collision
Present)
Red
When flashing, a
collision is being
detected on one or
more segments
connected to the
MMAC. You should
note that periodic
flashing is normal.
Excessive flashing or on solid
indicates excessive collisions.
Ensure that the SQE test is
disabled for any transceiver
connected to the AUI port.
Check cabling for data loops.
PWR (AUI
port power)
Green
When on, the AUI
port is receiving
power.
If the AUI port is the selected
repeater port and this LED is
off, the port is not receiving
power.
Check the fuse associated with
the port.
ON
(Fiber/AUI
ports)
Green
This LED is on for
the port selected as
the active repeater
port, and off for the
port that is off.
If both LEDs are off, reinitialize
the board by pressing the reset
switch, If still not lit, call
Cabletron Systems Technical
Support
LNK
(Link/
Fiber
Port)
Green
When on, a link is
established
between the IRM3
Fiber port and the
fiber device at the
other end of the
segment. LED is on
as long as the link is
maintained. The port
generates a 1 MHz
idle signal to
maintain the link
when no data is
being transmitted.
If off, the link between the port
and fiber device has been
broken.
Check the connectors at each
end of the segment to ensure
that they are free of dust. Clean
the connectors if necessary.
Reconnect the segment and
check the Link LED again.
Table 5-1
LANVIEW Troubleshooting (Continued)
LED
COLOR
DESCRIPTION
ERROR
CONDITION/RECOMMENDED
ACTION