• Supported Platforms
• M10i Routers

• Related Topics
• Configuring CFEB Redundancy on the M10i Router
• M10i Compact Forwarding Engine Board (CFEB) and Enhanced Compact Forwarding Engine Board (CFEB-E) Description
• Removing an M10i CFEB or CFEB-E

Troubleshooting the M10i CFEB and CFEB-E

Problem

The CFEB or CFEB-E is not functioning normally.

Solution

When a CFEB or CFEB-E is functioning correctly, the green LED labeled OK is lit steadily. For more information about the CFEB or CFEB-E LEDs, see M10i CFEB and CFEB-E LEDs. If the CFEB or CFEB-E fails, the forwarding and routing functions of the router halt immediately and do not resume until the CFEB or CFEB-E failure has been corrected.

To troubleshoot a CFEB or CFEB-E:

1. Check the alarm LEDs on the HCM. If the yellow or red alarm LED on the HCM is lit, 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.

2. Verify that the CFEB or CFEB-E is properly seated in the midplane. Use a Phillips screwdriver to ensure that the screws are securely tightened.
3. If you are unable to correct the problem, replace the CFEB or CFEB-E with a spare. For instructions, see Replacing, Upgrading, or Downgrading an M10i CFEB or CFEB-E. If the LED lights correctly on the spare, the original CFEB or CFEB-E is faulty. Return it to Juniper Networks, as described in Contacting Customer Support.