Configuring Parameters Carried in RA Messages

An RA message carries the hop limit, prefix option, neighbor reachable time, and lifetime.

Procedure

Run system-view
The system view is displayed.
Run ipv6 nd hop-limit limit
A hop limit is configured for RA messages.
Run interface interface-type interface-number
The interface view is displayed.
Run ipv6 enable
IPv6 is enabled.
Run ipv6 nd ra prefix default no-advertise
The device is configured not to include the default address prefix generated based on an interface IPv6 address in an RA message.
Run ipv6 nd ra prefix ipv6-address prefix-length valid-lifetime preferred-lifetime [ no-autoconfig ] [ off-link ]
An address prefix is configured for an RA message.

The address prefix configured using the ipv6 nd ra prefix command has a higher priority than the default address prefix. Given that an RA message can carry a maximum of 17 address prefixes, the default address prefix will not be carried if 17 address prefixes have been manually configured.

If stateless address autoconfiguration is used, you must specify the prefix length as 64. Otherwise, the address does not take effect, and RA messages will be discarded.
Run ipv6 nd autoconfig managed-address-flag
The managed address configuration flag of stateful address autoconfiguration in an RA message is configured.
Run ipv6 nd autoconfig other-flag
The other configuration flag of stateful address autoconfiguration in an RA message is configured.

If the managed address configuration flag is set to 1 in an RA message, the other configuration flag must also be set to 1.
Run ipv6 nd nud reachable-time value
A neighbor reachable time is configured.
Run ipv6 nd ra router-lifetime ra-lifetime
A lifetime is configured for an RA message.

The advertisement interval of an RA message configured using the ipv6 nd ra command must be less than or equal to its lifetime.
Run ipv6 nd ra advertised-mtu disable
The device is configured not to include the MTU option in an RA message.
Run commit
The configuration is committed.