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request chassis feb


Syntax (ACX1000, ACX7509 Devices)


(M120 router only) Control the operation of the specified Forwarding Engine Board (FEB).

(ACX1000, ACX7509 routers) Restart the specified FEB. Upon restart, the FEB goes offline and online within the stipulated time. FEB traffic is forwarded before power off. Traffic is recovered after FEB is online.


slot slot-number

FEB slot number. Replace slot-number with a value from 0 through 5.

For ACX7509, the value is 0 or 1 and the offline, online and restart options are not supported in backup routing engine (slot 1), where as all other FRU operations are supported.


Bring the specified FEB offline.


Bring the specified FEB online.


Restart the specified FEB.

Required Privilege Level


Output Fields

When you enter this command, you are provided feedback on the status of your request.

request chassis feb (M120 Router)

request chassis feb offline slot 0

request chassis feb online slot 0

request chassis feb restart slot 0

request chassis feb (ACX1000, ACX7509 Routers)

Release Information

Command introduced in Junos OS Release 8.0.

Command support introduced for ACX7509 devices in Junos OS Evolved Release 21.4.