ipv6 nd ra halt

Function

The ipv6 nd ra halt command suppresses the Router from sending all RA messages.

The undo ipv6 nd ra halt command cancels the configuration.

By default, the Router is suppressed from sending all RA messages.

Format

ipv6 nd ra halt

undo ipv6 nd ra halt

Parameters

None

Views

100ge sub-interface view, 100GE interface view, 10GE sub-interface view, 10GE interface view, 200GE sub-interface view, 25GE sub-interface view, 25GE interface view, 400GE sub-interface view, 400GE interface view, 40GE sub-interface view, 40GE interface view, 50GE sub-interface view, 50GE interface view, Eth-Trunk sub-interface view, Eth-Trunk interface view, FlexE interface view, GE optical interface view, GE sub-interface view, GE interface view, GE electrical interface view, Global VE sub-interface view, PW-VE sub-interface view, PW-VE interface view, VBDIF interface view, VE sub-interface view, VLANIF interface view, Management interface view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
nd	write

Usage Guidelines

Usage Scenario

When a Router is connected to a host, it needs to periodically send RA messages to the host. An RA message carries both the IPv6 prefix and flag of stateful address autoconfiguration. You can run the undo ipv6 nd ra halt command to enable a Router to send RA messages.
When a Router is connected to a Router, that is, there is no host on the network, sending RA messages is not required. You are then recommended to keep SA message suppression enabled.

Prerequisites

IPv6 has been enabled on the involved interface using the ipv6 enable command.

Configuration Impact

After the ipv6 nd ra halt command is run to suppress a Router from sending all RA messages, the Router no longer sends all RA messages. In such a case, the hosts on the network cannot receive information about updated IPv6 prefixes periodically.

Precautions

By default, sending all RA messages is suppressed. You can run the display icmpv6 statistics command to check whether a local Router has sent RA messages.

Example

# Suppress a Router from sending all RA messages on GE 0/1/1.

<HUAWEI> system-view
[~HUAWEI] interface GigabitEthernet 0/1/1
[~HUAWEI-GigabitEthernet0/1/1] ipv6 enable
[*HUAWEI-GigabitEthernet0/1/1] ipv6 nd ra halt