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show chassis afeb



Display compact Forwarding Engine Board status.


This command has no options.

Required Privilege Level


Output Fields

Table 1 lists the output fields for the show chassis afeb command. Output fields are listed in the approximate order in which they appear.

Table 1: show chassis afeb

Field Name

Field Description


State of the compact Forwarding Engine Board:

  • Offline—FEB is powered down.

  • Online—FEB is operational and running.

  • Check—FEB is in alarmed state because of the following reasons:

    • Hardware error.

    • PFE is unable to boot.


Temperature of the air passing by the FEB, in degrees Celsius or in both degrees Celsius and degrees Fahrenheit.

CPU Utilization

Total percentage of CPU being used.

Interrupt Utilization

Of the total CPU being used by the FEB processor, the percentage being used for interrupts.

Heap Utilization

Percentage of heap space (dynamic memory) being used by the FEB processor. If this number exceeds 80 percent, you might experience a software problem (memory leak).

Buffer Utilization

Percentage of buffer space being used by the FEB processor for buffering internal messages.


Total DRAM, in megabytes, available to the FEB processor.

Start time

Time when the Routing Engine detected that the FEB was running.


How long the Routing Engine has been connected to the FEB and, therefore, how long the compact Forwarding Engine Board has been up and running.

Sample Output

show chassis afeb (MX104 Router)

Release Information

Command introduced in Junos OS Release 13.2.