ipv6 nd ra route-information

Function

The ipv6 nd ra route-information command configures route information in RA packets.

The undo ipv6 nd ra route-information command deletes route information in RA packets.

By default, there is no route in RA packets.

Format

ipv6 nd ra route-information ipv6-address prefix-length lifetime route-lifetime [ preference { high | medium | low } ]

undo ipv6 nd ra route-information ipv6-address prefix-length

undo ipv6 nd ra route-information ipv6-address prefix-length lifetime route-lifetime [ preference { high | medium | low } ]

Parameters

Parameter	Description	Value
ipv6-address	Specifies the prefix of an IPv6 address.	The prefix is a 32-digit hexadecimal number, in the format of X:X:X:X:X:X:X:X.
prefix-length	Specifies the prefix length of an IPv6 address.	The value is an integer that ranges from 0 to 128.
lifetime route-lifetime	Specifies the lifetime of a route.	The value is an integer ranging from 0 to 4294967295, in seconds.
preference	Specifies the priority of a route.	-
high	Specifies the route priority to be high.	-
medium	Specifies the route priority to be medium.	-
low	Specifies the route priority to be low.	-

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

An RA packet includes routing information. The routing device sends the specified routes to the hosts on the local network segment by using this information. The hosts can send packets by using these routes.

Prerequisites

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

By default, the Router does not send RA packets. Therefore, to send the routers to the host, you need to run the undo ipv6 nd ra halt command to enable the function of advertising RA packets for the device.

Configuration Impact

When receiving the RA packets carrying route information, a host updates its routing table. When sending the RA packets to another device, a host queries the routing table and selects proper route for sending packets.

Precautions

When this command is to be run, the value of ipv6-address cannot be a loopback address.

Example

# Configure the route information of RA packets on GE0/1/1: The lifetime of the route with the destination address of 2001:db8::12/64 is 1550 seconds, and the priority of this route is high.

<HUAWEI> system-view
[~HUAWEI] interface GigabitEthernet 0/1/1
[~HUAWEI-GigabitEthernet0/1/1] ipv6 enable
[*HUAWEI-GigabitEthernet0/1/1] undo ipv6 nd ra halt
[*HUAWEI-GigabitEthernet0/1/1] ipv6 nd ra route-information 2001:db8::12 64 lifetime 1550 preference high