rule-prefix

Format

rule-prefix ipv6-prefix prefix-length v6prefix-length ipv4-prefix ipv4-prefix prefix-length v4prefix-length [ vpn-instance vpn-instance-name ] ea-length ea-length [ psid-offset offset-length ]

undo rule-prefix [ ipv6-prefix prefix-length v6prefix-length ipv4-prefix ipv4-prefix prefix-length v4prefix-length [ vpn-instance vpn-instance-name ] ea-length ea-length [ psid-offset offset-length ] ]

Parameters

Parameter	Description	Value
prefix-length v6prefix-length	Specifies an IPv6 prefix address in a BMR.	The value is an integer ranging from 1 to 64.
prefix-length v4prefix-length	Specifies an IPv4 prefix address in a BMR.	The value is an integer ranging from 1 to 32.
ipv4-prefix ipv4-prefix	Specifies an IPv4 prefix address in a BMR.	The value is in dotted decimal notation.
vpn-instance vpn-instance-name	Specifies the name of a VPN instance.	The value is a string of 1 to 31 case-sensitive characters, spaces not supported. When double quotation marks are used around the string, spaces are allowed in the string.
ea-length ea-length	Specifies an embedded address length.	The value is an integer ranging from 0 to 48.
psid-offset offset-length	Specifies a PSID offset.	The value is an integer ranging from 1 to 16. The default value is 6.
rule-prefix ipv6-prefix	Specifies an IPv6 prefix address in a BMR.	The value is a 32-bit hexadecimal number in the format of X:X:X:X:X:X:X:X.

Views

MAP rule view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
map	write

Usage Guidelines

Usage Scenario

After you run the map-rule command to create a BMR, run the rule-prefix command to configure BMR parameters used to verify and encapsulate MAP packets in the MAP rule view.

Precautions

A single rule-prefix command instance can be run for each BMR.
The IPv4 address is mutually exclusive with an interface IP address, an address in a BRAS address pool, and an address in a NAT address pool.

Example

# Create a BMR named Test, access the BMR view, and set an IPv6 prefix.

<HUAWEI> system-view
[~HUAWEI] map rule Test
[*HUAWEI-map-rule-Test] rule-prefix 2001:db8::1 prefix-length 32 ipv4-prefix 10.1.1.1 prefix-length 24 ea-length 16 psid-offset 4