Cisco 4404 - Wireless LAN Controller Quick Start Manual page 5

Figure 2 shows the back panel layout with a power supply unit installed in power supply slot 2.
Figure 2 Back Panel Layout
1
VPN termination module Slot 1
1
VPN termination module slot 0
2
Power supply slot 1
3
Checking the Controller LEDs
If your controller is not working properly, check the LEDs on the front panel of the unit. You can use
the LED indications to quickly assess the unit's status. The LED indicators are described in
Table 1 LED Indicators
Front Panel LEDs
LED
Service Port link
Service Port activity
PS1 and PS2
Alarm
Status
Ethernet link
Ethernet activity
Distribution port link
2
Description
Solid green indicates service port link is established.
Blinking green indicates link data transmission over the service port.
Solid green indicates power supply # is operational.
Solid red indicates an undervoltage condition detected on one of the
DC/DC converters. Off indicates normal operation. This LED behavior
may also be defined by the controller software.
Solid green followed by blinking green indicates controller is rebooting
or loading software. Off indicates normal operation. After the controller
resets, the LED behavior is defined by the controller software.
Solid green indicates Ethernet link to wired network is established.
Blinking green indicates data transmission over the Ethernet link
Solid green indicates link established on distribution port # link.
3
Slot 2 power supply power receptacle
4
Slot 2 power supply switch
5
Slot 2 power supply LED
6
4 5 6
5