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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:
- AC power supply—A green LED labeled OUTPUT OK. For more information, see M7i AC Power Supply.
- Routing Engine—Four LEDs on the Routing Engine faceplate indicate the status of the Routing Engine. Two upper LEDs—a green one labeled HDD, and a blue one labeled MASTER—and two lower LEDs—a red one labeled FAIL, and a green one labeled ONLINE. For more information, see M7i Routing Engine Description.
- PIC—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 M7i Multiservice Edge Router PIC Guide.
- CFEB or CFEB-E—A green LED labeled OK, a red one labeled FAIL, and a blue one labeled MASTER. For more information, see M7i Compact Forwarding Engine Board (CFEB) and Enhanced Compact Forwarding Engine Board (CFEB-E) Description.
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. See Contacting 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. |
| Yellow |
The chassis temperature has exceeded 65° C and the fans have been turned on to full speed. |
| 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. |
| Red | |
The chassis temperature has exceeded 75° C. If this condition persists for more than 4 minutes, the router shuts down. |
| 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 |
