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Overview of Troubleshooting Resources for the M7i Router

 

LEDs on the FIC

The FIC provides status and troubleshooting information at a glance. It is located on the front of the chassis below the PICs, as shown in M7i Chassis Description. The LEDs on the FIC include the following:

  • Alarm—The circular red MAJOR ALARM LED indicates a critical condition that can result in a system shutdown. The triangular yellow MINOR ALARM LED next to it indicates a less severe condition that requires monitoring or maintenance. Both alarms can occur simultaneously. When an alarm LED is lit, issue the show chassis alarms command in the CLI to determine the cause of the alarm. For more information about the alarm LEDs, see M7i Fixed Interface Card (FIC) Description. For more information about the causes of alarms, see Hardware and Interface Alarm Messages.

  • Interface—Each interface on a FIC has a LINK LED that indicates the port is online, and a ACTIVITY LED that indicates activity on the port.

  • PIC—Each PIC has an LED on the FIC labeled PICS ON/OFF that shows whether the PIC is online.

LEDs on Hardware Components

LEDs on the faceplates of many hardware components report component status:

Hardware and Interface Alarm Messages

When the Routing Engine detects an alarm condition, it lights the red or yellow alarm LED on the FIC. To view a more detailed description of the alarm cause, issue the show chassis alarms CLI command.

There are two classes of alarm messages:

  • Chassis alarms—Indicate a problem with a chassis component such as the cooling system or power supplies, as described in Table 1.

  • Interface alarms—Indicate a problem with a specific network interface, as described in Table 2.

Table 1: Chassis Alarm Messages

Chassis Component

Alarm Condition

Remedy

Alarm Severity

Alternative Media

The router has an CompactFlash card but boots from alternate boot device. If you configure your router to boot from the hard disk, ignore this alarm condition.

Contact technical support. SeeContacting Customer Support for more information.

Yellow

CFEB/CFEB-E

CFEB/CFEB-E has failed. If this occurs, the board attempts to reboot.

Replace failed CFEB/CFEB-E.

Red

Too many hard errors in CFEB/CFEB-E memory.

Replace failed CFEB/CFEB-E.

Red

Too many soft errors in CFEB/CFEB-E memory.

Replace failed CFEB/CFEB-E.

Red

A CFEB/CFEB-E microcode download has failed.

Replace failed CFEB/CFEB-E.

Red

Fan Trays

A fan has failed.

Replace failed fan tray.

Red

The fan tray has been removed from the chassis.

Install missing fan tray.

Red

Hot swapping

Too many hot-swap interrupts are occurring. This message generally indicates that a hardware component that plugs into the router's midplane from the front is broken.

Contact technical support. See Contacting Customer Support for more information.

Red

Power supplies

A power supply has been removed.

Insert missing power supply.

Yellow

A power supply has failed.

Replace failed power supply

Red

Routing Engine

Error in reading or writing hard disk.

Reformat hard disk and install bootable image. If this fails, replace failed Routing Engine.

Yellow

Error in reading or writing CompactFlash card.

Reformat CompactFlash card and install bootable image. If this fails, replace failed Routing Engine.

Yellow

System booted from hard disk. This alarm only applies if you have an optional CompactFlash card installed.

Install bootable image on CompactFlash card. If this fails, replace failed Routing Engine.

Yellow

CompactFlash card missing in boot list.

Replace failed Routing Engine.

Red

Hard disk missing in boot list.

Replace failed Routing Engine.

Red

Routing Engine failed to boot.

Replace failed Routing Engine.

Red

Temperature

The chassis temperature has exceeded 55° C and the fans have been turned on to full speed and one or more fans have failed.

  • Check room temperature.

  • Check air flow.

  • Check fan tray.

Yellow

The chassis temperature has exceeded 65° C and the fans have been turned on to full speed.

  • Check room temperature.

  • Check air flow.

  • Check fan tray.

Yellow

The chassis temperature has exceeded 65° C and a fan has failed. If this condition persists for more than 4 minutes, the router shuts down.

  • Check room temperature.

  • Check air flow.

  • Check fan tray.

Red

The chassis temperature has exceeded 75° C. If this condition persists for more than 4 minutes, the router shuts down.

  • Check room temperature.

  • Check air flow.

  • Check fan tray.

Red

The temperature sensor has failed.

Contact technical support. See Contacting Customer Support for more information.

Red

Table 2: SONET/SDH Interface Alarm Messages

CLI Message

interface-name so-x/x/x - SONET bit error rate defect

interface-name so-x/x/x - SONET bit error rate fault

interface-name so-x/x/x - SONET line AIS

interface-name so-x/x/x - SONET line remote defect indicator

interface-name so-x/x/x - SONET loss of frame

interface-name so-x/x/x - SONET loss of light

interface-name so-x/x/x - SONET loss of pointer

interface-name so-x/x/x - SONET loss of signal

interface-name so-x/x/x - SONET path AIS

interface-name so-x/x/x - SONET path mismatch

interface-name so-x/x/x - SONET path remote defect indicator

interface-name so-x/x/x - SONET PLL lock

interface-name so-x/x/x - SONET remote error indicator

interface-name so-x/x/x - SONET severely errored frame

interface-name so-x/x/x - SONET unequipped