ipv6 nd proxy local enable

Function

The ipv6 nd proxy local enable command enables the local proxy ND function.

The undo ipv6 nd proxy local enable command disables the local proxy ND function.

By default, the local proxy ND function is not enabled.

Format

ipv6 nd proxy local enable

undo ipv6 nd proxy local enable

Parameters

None

Views

VBDIF interface view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
nd	write

Usage Guidelines

Usage Scenario

In the EVC model, the member interfaces of a BD broadcast the received packets in the BD. To minimize broadcast traffic, split horizon can be configured on member interfaces that do not need to communicate with each other using the split-horizon enable command. After split horizon is enabled on member interfaces in a BD, users who are served by these interfaces are isolated. However, as services become more diverse and keep increasing, users have growing needs for intra-BD communication. To allow isolated users in a BD to communicate with each other, run the ipv6 nd proxy local enable command to enable the local proxy ND function on the VBDIF interface of the BD.

Prerequisites

The IPv6 function has been enabled using the ipv6 enable command.

Precautions

After local proxy ND is enabled, all users in the BD can communicate with each other.
The IPv6 address of the interface enabled with proxy ND must be on the same network segment as the IPv6 address of the host connected to the interface.
Proxy ND cannot be enabled on an interface configured with a CGA address. Otherwise, the replied NA packets that carry the CGA/RSA option may be discarded.
Multiple types of proxy ND can be configured in the interface view. The priorities of these proxy ND types are as follows in descending order: any proxy ND > intra-VLAN proxy ND/inter-VLAN proxy ND/local proxy ND > routed proxy ND.
Proxy ND is not supported for the following types of packets:
NS packets with a link-local address as the target address
DAD NS packets with the source address of all 0s
NS packets with the target address and interface address on different network segments
NS packets with the IP address of the local host as the target address.

Example

# Enable the local proxy ND function on VBDIF 10.

<HUAWEI> system-view
[~HUAWEI] bridge-domain 10
[*HUAWEI-bd10] quit
[*HUAWEI] interface vbdif 10
[*HUAWEI-Vbdif10] ipv6 enable
[*HUAWEI-Vbdif10] ipv6 nd proxy local enable