Workgroup Remote Access Switch 421
LED I
NDICATORS
WAN LED Indicators
Each Ethernet port also has a Link LED. This LED provides connectivity information for a specific
Ethernet port. It glows green when the link is up.
There is one Collision LED for the hub module. It is located between the 7th and 8th hub ports. This
LED provides collision information for the entire hub. It blinks red when a collision occurs.
NT1 STATUS LEDS (CSX1200-U4-MOD ONLY)
The NT1 Status LEDs are located between the S/T and U-interface jacks for each port on the
CSX1200-U4-MOD’s back panel. These LEDs are convenient troubleshooting tools to help diagnose
NT1 and related link problems on a port-by-port basis.
Receive LEDs
state color
port enabled, no activity off
port enabled, activity yellow (blinking)
Link LEDs
state color
power off or failure off
link, active green
Collision LED
state color
normal off
collision red (blinking)
NT1 Status LEDs
state color
U and S/T active (ON) green
OFF (not lit)
U active, S/T inactive green
(slow blink; 1 per second)
System Initialization green
(fast blink, 8 per second)
