The Officeconnect Ethernet Hub 4 And 4C; Ethernet Hub 4 And 4C-Front - 3Com OfficeConnect 3C16700A User Manual

T O C
HE FFICE ONNECT
Ethernet Hub 4 and 4C—Front
Alert LED Activity LED
orange (Hub 4 only)
Alerts you to excessive
yellow
network use or an Flashes each time
isolated (partitioned)
a packet is
10BASE-T port. received on a
port.
Alert Power Activity Collision
Power LED Collision LED
green yellow
Indicates that the hub is Flashes each time a collision is detected
powered on. on the network. Collisions are part of
normal network operation.
E
THERNET
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.
Port Status AUI/COAX
3
1 2 4
Green=AUI
Green = OK, Yellow = Partitioned
off=COAX
H 4 4C
UB AND
Network Utilization LEDs (Hub 4C only)
green/yellow/orange
Indicates how much your network is being used.
Network Utilization
1% 2% 3% 6% 12% 25% 50% 80%
Partitioned
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.
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OfficeConnect Ethernet Hub 4C