3Com MSR 30, MSR 50 manual Link-protocol fr ietf nonstandard

400CHAPTER 22: FRAME RELAY CONFIGURATION COMMANDS

subnumber: Subinterface number, in the range 0 to 1023.

p2p: Specifies a point-to-point subinterface.

p2mp: Specifies a point-to-multipoint subinterface.

Description Use the interface serial command to create subinterface and enter subinterface view.

Use the undo interface serial command to delete subinterface.

Frame relay subinterface type defaults to p2mp.

Example # Configure a point-to-point subinterface Serial 2/0.2.

<Sysname> system-view

[Sysname] interface serial2/0.2 p2p [Sysname-Serial2/0.2]

link-protocol fr

Syntax	link-protocol fr [ ietf nonstandard ]
View	Interface view
Parameter	ietf: Internet Engineering Task Force (IETF) standard encapsulation format
	(default).
	nonstandard: Nonstandard compatible encapsulation format.
Description	Use the link-protocol fr command to encapsulate interface link layer protocol as
	frame relay.
	By default, the link-layer protocol encapsulated on the interface is PPP.
	The frame relay encapsulation can be either ietf or nonstandard. IETF
	encapsulation conforms to RFC 1490, that is, it supports the IETF standard and is
	compatible with dedicated encapsulation format of mainstream routers.
	If you encapsulate a frame relay interface using any of the above frame relay
	formats, the packets are encapsulated in the corresponding frame relay format
	before they are forwarded through the interface. That is, two devices can
	communicate with each other if the interfaces of both sides can recognize packets
	in both of the formats even if they are encapsulated using different frame relay
	formats. If an interface on one side cannot recognize packets of both formats, you
	need to encapsulate the two interfaces using the same frame relay format.
Example	# Configure frame relay encapsulation on interface Serial 2/0 and select the
	nonstandard encapsulation compatible format.