Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?





Hierarchy Level

Release Information

Statement introduced before Junos OS Release 7.4.

Statement introduced in Junos OS Release 12.2 for the ACX Series Universal Metro Routers.


For DS0, E1, E3, T1, and T3 interfaces, configure the interface to share the transmission of start and end flags.


When configuring E1 or T1 interfaces on the 10-port Channelized E1/T1 IQE PIC, the start-end-flag statement must be included at the [edit interfaces e1-fpc/pic/port] or [edit interfaces t1-fpc/pic/port] hierarchy level as appropriate.


filler—Wait two idle cycles between the start and end flags.

shared—Share the transmission of the start and end flags. This is the default.

Required Privilege Level

interface—To view this statement in the configuration.

interface-control—To add this statement to the configuration.