Specifications

10 AT-8900, AT-9900, AT-9900s Series Switches
Software Release 3.0.2
C613-03092-00 REV C
Switch LEDs
The following LEDs report operations and faults and on the AT-8900, AT-9900,
and AT-9900s switches:
■ SFP port LEDs
■ RJ-45 port LEDs
■ Ethernet port LEDs
■ System LEDs
SFP port LEDs
RJ-45 port LEDs
LED State Description
L/A
(Link Activity)
Green On AT-8948 only, a 1000 Mbps link has been
established and is operating in full duplex
mode.
Green flashing On AT-8948 only, a full duplex activity is
occurring at 1000 Mbps.
Off On AT-8948 only and when an SFP is installed,
the link is closed.
SFP Green On the AT-9900 and AT-9900s switches, an SFP
transceiver is installed and a link has been
established.
On AT-8948, an SFP transceiver is installed.
Green flashing On the AT-9900 and AT-9900s series, an SFP
transceiver is installed and a link activity is
occurring. Not valid for AT-8948.
Amber On the AT-9900 and AT-9900s switches, an SFP
transceiver is installed but a link has not been
established. Not valid for AT-8948.
Amber flashing An SFP transceiver is installed but there is a
transmission fault.
LED State Description
L/A
(Link Activity)
Green A 1000 Mbps link has been established.
Green flashing 1000 Mbps activity is occurring.
Amber A 10/100 Mbps link has been established.
Amber flashing 10/100 Mbps activity is occurring.
D/C
(Duplex/Collision
Green The port is operating in full duplex mode.
Amber The port is operating in half duplex mode.
Amber flashing Collisions are occurring.