3Com MSR 30, MSR 50 manual X25 pvc, Undo x25 pvc pvc-number, Description on PVC attribute option

452CHAPTER 26: LAPB AND X.25 CONFIGURATION COMMANDS

Normally, the maximum receiving packet length is equivalent to the maximum sending packet. Unless access ISP allows, do not configure these two parameters with different values.

Example # Set the maximum receiving packet length and maximum sending packet length on X.25 interface Serial 2/0 to 256 bytes.

<Sysname> system-view

[Sysname] interface serial 2/0

[Sysname-Serial2/0] x25 packet-size 256 256

x25 pvc

Syntax x25 pvc pvc-number protocol-type protocol-address x121-addressx.121-address [ option ]

undo x25 pvc pvc-number

View Interface view

Parameter pvc-number: PVC number, in the range 1 to 4095 (inclusive), and must be in the PVC channel range.

protocol-type: Upper-layer protocol carried over the permanent virtual circuit, which may be IP (indicating that the upper-layer network protocol is IP protocol) or compressedtcp (indicating that the upper-layer network protocol is IP protocol, and supports TCP head compressing).

protocol-address: Network protocol address of the peer end of the PVC.

x121-addressx.121-address: X.121 address of the peer end of this PVC.

option: Attribute option of the PVC. Detailed description of PVC options:

Table 67 Description on PVC attribute option

Option	Description
broadcast	Forwards broadcast packets to the PVC peer.
encapsulation-type	Encapsulation type, which may be nonstandard, ietf,
	multi-protocol or snap.

compress

packet-sizeinput-packet output-packet

window-size input-window-sizeoutput-window-size

Compresses X.25 payload.

Specifies the maximum input packet length and maximum output packet length in bytes, which must range from 16 to 4096, and must be the integer power of 2.

Specifies the input and output window sizes of the PVC. When the modulo is 8, it is in the range 1 to 7; when the modulo is 128, it is in the range 1 to 127.

Description Use the x25 pvc command to configure a PVC route.

Use the undo x25 pvc command to delete a PVC route.