Device View IRM2 Hubs
SPECTRUM Enterprise Manager Page20 Cabletron Ethernet Hubs
Fail (Error)
This LED is located on the top of the left-hand
LED column. It indicates that a problem has been
detected with the SIRM.
CLN (Collision Present)
This LED is located on the top of the right-hand
LED column and is not labelled in SPECTRUM. It
indicates that the SIRM is detecting a collision
signal from one of the segments connected to the
hub.
Unlabeled 1
This LED is located below the Fail LED. It
indicates that the SIRM is receiving network
management packets.
Unlabeled 2
This LED is located below the CLN LED. It
indicates that the SIRM network management
software is on line and functional.
The SIRM modules also contain an RCV and POK
LED that are associated with its repeater port and
its network management port.
IRM2 Hubs
The IRM2 supports LEDs that represent operating
status, collision rates, error rates, packets
transmitted, and packets received for the entire
hub as follows. The LEDs are listed in top to
bottom order, except where otherwise noted.
ER (Error)
This LED indicates that a problem has been
detected with the IRM2.
PW (Power)
This LED indicates that the hub is receiving
power.
RC (Receive)
This LED indicates the IRM2 is repeating a data
packet received from one of the segments
connected to the hub chassis.
XM (Transmit)
This LED indicates that the IRM2 is transmitting
a data packet out to all other segments connected
to the hub chassis.
CL (Collision Present)
This LED indicates the IRM2 is detecting a
collision signal from one of the segments
connected to the hub chassis.
PO (Port OK)
This LED is lit to indicate that the Network
Interface Chip associated with the IRM2’s internal
repeater port has passed an internal Loop Back
Test and is ready for transmission.
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