3Com MSR 50, MSR 30 manual Link-protocol, Loopback local remote, Local Internal loopback, 157

157

link-protocol

Syntax link-protocol { fr [ nonstandard ietf mfr interface-numbernonstandard ] hdlc

ppp}

View POS interface view

Parameter fr: Specifies Frame Relay as the link layer protocol of the interface. ietf: Adopts the IETF encapsulation format. This is the default.

mfr interface-number: MFR interface or subinterface number. The specified interface must be one that already exists.

nonstandard: Adopts non-standard compatible encapsulation format.

hdlc: Specifies HDLC as the link layer protocol of the interface.

ppp: Specifies PPP as the link layer protocol of the interface.

Description Use the link-protocolcommand to set the link layer protocol of the interface. By default, PPP is used.

Example # Specify HDLC as the link protocol of interface POS 1/0.

<Sysname> system-view

[Sysname] interface pos 1/0

[Sysname-Pos1/0] link-protocol hdlc

loopback

Syntax	loopback { local remote }
	undo loopback
View	POS interface view
Parameter	local: Internal loopback.
	remote: External loopback.
Description	Use the loopback command to enable loopback for a POS interface.
	Use the undo loopback command to disable loopback.
	By default, loopback is disabled.
	Loopback is intended for test use. Disable it otherwise.