3Com MSR 30, MSR 50 manual Related command display interface pos

156CHAPTER 7: POS INTERFACE CONFIGURATION COMMANDS

Description Use the flag command to set the SONET/SDH overhead bytes.

Use the undo flag { j0 j1 } sdh command to restore the default SONET/SDH overhead bytes.

By default, the default SDH overhead bytes are used.

The default overhead bytes are as1 follows.

■c2: 0x16

■j0 (SDH): 15 hexadecimal numbers, each of which has the value of 0x0

■j1 (SDH): 15 hexadecimal numbers, each of which has the value of 0x0

■j0 (SONET): 0x01

■j1 (SONET): 62 hexadecimal numbers, each of which has the value of 0x0

Inconsistency between the c2 and j0 settings of a sending POS interface and the receiving POS interface causes alarms.

Related command: display interface pos.

Example # Set the SDH overhead byte J0 of POS1/0 interface.

<Sysname> system-view [Sysname] interface pos 1/0 [Sysname-Pos1/0] flag j0 sdh ff

frame-format

Syntax	frame-format { sdh sonet }
	undo frame-format
View	POS interface view
Parameter	sdh: Sets framing format to synchronous digital hierarchy (SDH).
	sonet: Sets framing format to synchronous optical network (SONET).
Description	Use the frame-formatcommand to configure framing on the POS interface.
	Use the undo frame-formatcommand to restore the default, that is, SDH.
Example	# Set the framing format on interface POS 1/0 to SDH.
	<Sysname> system-view
	[Sysname] interface pos 1/0
	[Sysname-Pos1/0] frame-format sdh