Allied Telesis Uplink Module - Manual (Page 8)

8 Uplink Module
C613-04022-01 REV H
Where To Find More Information
Sources of further information.
Information on Uplink Modules:
■ The Uplink Module Hardware Reference, which provides detailed
information on Uplink Modules.
Information on Switches and Switching Routers:
■ The Hardware Reference for your switch or switching router, which provides
detailed information on the switch unit and its hardware features.
■ The Software Reference for your switch or switching router, which provides
detailed information on configuring the switch unit and its software.
■ The User Guide for your switch or switching router, which provides an
introduction to the switch unit’s Graphical User Interface and its Layer 2
switching features.
Table: 4 AT-A42/GBIC LEDs .
LED State Function
L/A
Link/Activity
Green A 1000 Mbps link is open
Flashing green 1000 Mbps activity is occurring
Flashing amber
(and GBIC LED is Off) A TX fault has occurred
Off No link is present
GBIC Green The switch has recognised the GBIC,
the GBIC is a valid model
Green
(and L/A LED is flashing
GREEN) The port is operating at full-duplex
Amber
(and L/A LED is OFF) The switch has not recognised the
GBIC, the GBIC is not a valid model
Amber
(and L/A LED is flashing
GREEN) The port is operating at half-duplex
Flashing amber
(and L/A LED is flashing
GREEN) Collisions are occurring
Off No GBIC is installed, or a TX fault has
occurred
Both LEDs Slow alternate flashing of
L/A and GBIC LED, amber The switch has not recognised the
GBIC, or the GBIC is not a valid model