3Com 3C16792 User Guide - Page 10

Ffice, Onnect, Thernet

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THE OFFICECONNECT ETHERNET HUB 4 AND 4C Ethernet Hub 4 and 4C-Front Alert LED orange Alerts you to excessive network use or an isolated (partitioned) 10BASE-T port. Activity LED (Hub 4 only) yellow Flashes each time a packet is received on a port. 10BASE-T Port Status LEDs green/yellow Indicates the status of each 10BASE-T port. green - The link between the port and the next piece of network equipment is OK. yellow - The port has partitioned due to a fault on that segment. off - Nothing is connected to the port or the link has failed. Network Utilization LEDs (Hub 4C only) green/yellow/orange Indicates how much your network is being used. Alert Port Status Power ActivityCollision 1234 Green = OK, Yellow = Partitioned AUI/COAX Green=AUI Partitioned off=COAX Network Utilization 1% 2% 3% 6% 12% 25% 50% 80% OfficeConnect Ethernet Hub 4C Power LED green Indicates that the hub is powered on. Collision LED yellow Flashes each time a collision is detected on the network. Collisions are part of normal network operation. AUI/COAX Status LEDs (Hub 4C only) green/off=media, yellow=partition Indicates the status of the AUI or 10BASE-2 port, depending on which one is in use. green/off - The left-hand status LED is green if the AUI port is in use, and off if either the 10BASE-2 port is being used or nothing is connected to the port. yellow - If the right-hand status LED is yellow, the port in use has been partitioned. 10

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10
T
HE
O
FFICE
C
ONNECT
E
THERNET
H
UB
4
AND
4C
Ethernet Hub 4 and 4C—Front
1
2
3
4
Green=AUI
off=COAX
1%
2%
3%
6%
12%
25%
50%
80%
Port Status
Network Utilization
Partitioned
AUI/COAX
Alert
OfficeConnect
Ethernet Hub 4C
Green = OK,
Yellow = Partitioned
Power
Collision
Activity
Alert LED
orange
Alerts you to excessive
network use or an
isolated (partitioned)
10BASE-T port.
Power LED
green
Indicates that the hub is
powered on.
Collision LED
yellow
Flashes each time a collision is detected
on the network. Collisions are part of
normal network operation.
Activity LED
(Hub 4 only)
yellow
Flashes each time
a packet is
received on a
port.
Network Utilization LEDs (Hub 4C only)
green/yellow/orange
Indicates how much your network is being used.
10BASE-T Port Status LEDs
green/yellow
green
yellow
off
Indicates the status of each 10BASE-T port.
— The link between the port and the next
piece of network equipment is OK.
— The port has partitioned due to a fault on
that segment.
— Nothing is connected to the port or the link
has failed.
AUI/COAX Status LEDs (Hub 4C only)
green/off=media, yellow=partition
green/off
yellow
Indicates the status of the AUI or 10BASE-2 port, depending on which one is in use.
— The left-hand status LED is green if the AUI port is in use, and off if either
the 10BASE-2 port is being used or nothing is connected to the port.
— If the right-hand status LED is yellow, the port in use has been partitioned.