Allied Telesis SwitchBlade 4000 Series Switch Hardware Reference - Manual (Page 47)

Hardware Reference 47
C613-03060-00 REV H
Troubleshooting
This section provides information on how to detect and resolve problems with
the SwitchBlade and its expansion options.
Other sources of useful troubleshooting information are:
■ www.alliedtelesis.com/support/software .
■ The SwitchBlade Software Reference.
LEDs and What They Mean
The following tables outline how SwitchBlade LEDs report faults and
operational activities.
Switch Controller LEDs
The following LEDs will operate if the switch controller is receiving power.
Table 12: LEDs on the AT-SB4211 Switch Controller.
LED State Function
Power Green The switch controller is receiving power
Master Amber The switch controller is the master controller
Off The switch controller is the slave controller
Fault Red The switch controller or management software
is malfunctioning
2 Flashes 1 A fan-tray fan has failed
3 Flashes
1
A PSU or PSU fan is malfunctioning
5 flashes
1
The fan tray has been removed for more than
20 seconds
6 Flashes
1
The switch’s internal temperature has
exceeded the alarm threshold
Slow flashing at
startup The SDRAM (DIMM) has not been detected
Rapid flashing at
startup The SDRAM (DIMM) is not compatible with the
switch
L/A
(Link/Activity)
Green A 100 Mbps management port link is open
Amber A 10 Mbps management port link is open
Flashing green 100 Mbps activity is occurring through the
management port
Flashing amber 10 Mbps activity is occurring through the
management port