Step 3: Check the PIC LED States

For PICs that have a physical port, the LEDs indicate the status of the physical link. If the LED is green, the physical link is up. If the LED is red or amber, the physical link is down. Usually, when the LED is red, the receive port is not receiving a signal. If the LED is amber, the receive port is getting a remote alarm from the device.

For PICs with no physical port, such as a tunnel or encryption PIC, the LED indicates the status of the PIC.

The Tunnel PIC, which has no ports, has a single LED. Each LED has four different states, described in Table 50.

Table 50: Tunnel PIC LEDs

Color	State	Description
Red	Fail	The FPC has detected a PIC failure.
Green	Normal	The port is functioning normally.
Amber	Problem detected; still functioning	To track the problem, use the CLI.
None	Not enabled	The port is not enabled or the PIC is offline.

For M7i and M10i routers, most PICs have an LED labeled STATUS on the PIC faceplate. Some PICs have additional LEDs, often one per port. The meaning of the LED states differs for various PICs. For more information, see the appropriate router PIC guide.