Allied Telesis AT-9900s Series Switch - Manual (Page 8)

Installation Guide
7
AT-A61 1000BASE-X SFP Ports
The AT-A61 12-port 1000BASE-X expansion module features:
■ two rows of 6 SFP ports
■ LEDs showing port status
■ 32MBytes of DDR SDRAM for packet buffering
■ support for hot-swappable SFP modules
Front view AT-A61
The following LEDs report operations and faults on the AT-A61.
LED State Description
SFP Green An SFP transceiver is installed and a link has
been established.
Green flashing An SFP transceiver is installed and link
activity is occurring.
Amber An SFP transceiver is installed but a link has
not been established.
Amber flashing An SFP is installed but there is a fault.
Off An SFP transceiver is not installed.
A
T
-A61