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Troubleshooting the M10i Routing Engine

 

Problem:

Description: The Routing Engine is not functioning normally.

Solution

A green LED labeled ONLINE reports the status of the Routing Engine. When a Routing Engine is functioning correctly, the green LED labeled ONLINE is lit steadily. For more information, see M10i Routing Engine 850 LEDs. To troubleshoot a Routing Engine:

  1. Check the alarm LEDs on the HCM.
  2. Issue the show chassis alarms CLI command to view a more detailed description of the alarm cause:
    user@host> show chassis alarms

    For a list of messages that can appear in the output, see Table 1.

  3. If an alarm indicates a problem with the CompactFlash card, reinstall the Junos OS from Removable Media. See the Installation and Upgrade Guide.
  4. Verify that the Routing Engine is properly seated.
  5. If you are unable to correct the problem, replace the Routing Engine with a spare. For instructions, see Replacing the M10i Routing Engine. If the LED lights correctly on the spare, the original Routing Engine is faulty. Return it to Juniper Networks, as described in Contacting Customer Support.

Table 1: Routing Engine Alarm Messages

Alarm Severity

CLI Message

Alarm Condition

Solution

Yellow

Host routing-engine-number hard-disk drive error

Error in reading or writing hard disk.

Reinstall the Junos OS from Removable Media.

Yellow

Host routing-engine-number compact-flash drive error

Error in reading or writing the CompactFlash card.

Reinstall the Junos OS from Removable Media.

Yellow

ECC multibit parity error

A parity error occurred in the memory DIMMs

Replace the memory DIMMs. See Replacing an SDRAM Module on an M10i Routing Engine.

Yellow

Host routing-engine-number Boot from alternate media

A CompactFlash card is installed, but the system booted from the hard disk.

No action is required if you configure your router to boot from the hard disk.

If not, reinstall the Junos OS from Removable Media.

Red

Backup RE Active

Backup Routing Engine is active. Either a command was issued to switch to the backup Routing Engine or the master Routing Engine has failed.

No action is required if the backup Routing Engine was intentionally made active.

If the master Routing Engine failed, replace it.

Red

Mixed Master and Backup RE types

One Routing Engine 400 and one Routing Engine 850 are installed in the same router.

Both Routing Engines must be the same model number.

Replace one of the Routing Engines.

Red

Host routing-engine-number compact-flash missing in boot list

CompactFlash card missing in boot list.

Replace the failed Routing Engine.

Red

Host routing-engine-number hard-disk missing in boot list

Hard disk missing in boot list.

Replace the failed Routing Engine.

Red

Loss of Communication with Backup RE

Backup Routing Engine failed to boot.

Replace the failed Routing Engine.