Brocade Communications Systems SilkWorm 2400, Hardware Reference Manual, Page: 28 / 42

Chapter 3 Diagnostics
3-4
Status and Activity Indicators
Front Panel LED Port Indicators
The color and flash speed of each port’s LED, as described in Table 3-2, indicates the
individual port’s status.
* Slow -- 2 second interval, Fast - 1/2 second interval
Each switch port includes an LED indicator. A port with no GBIC installed that if
functioning properly will have no light showing on the LED. If a problem has been
detected with the port, the LED indicators above will provide some indication of the type
of problem. Faults and problems are depicted with a yellow port indicator.
When a GBIC is installed and a cable is connected to a properly functioning Fibre
Channel device, the LED indicator will be steady green. If a slow green flash is observed
it indicates the port is seeing light but cannot make a proper fabric connection. This could
indicate a loopback cable is installed, the fabric is segmented (a E port connection to
another switch cannot be completed and the switches cannot form a fabric), or the
SilkWorm has been connected to an incompatible switch.
When frame traffic is being transferred on a port, the LED flickers fast green showing
the port is active and transferring data.
Table 3-2
Front Panel LED Status Indicators
F
RONT
P
ANEL
LED
S
D
EFINITION
No light showing No light or signal carrier (no module, no cable) for media interface
LEDs
Steady yellow Receiving light or signal carrier, but not yet online
Slow* yellow Disabled (result of diagnostics or portDisable command). Flashes
every 2 seconds.
Fast* yellow Error, fault with port. Flashes every 1/2 second.
Steady green Online (connected with device over cable)
Slow green Online, but segmented (loopback cable or incompatible switch) flash
every 2 seconds.
Fast green Internal loopback (diagnostic). Flashes every 1/2 second.
Flickering green Online and frames flowing through port.