Configuring parameters for RA messages
Enter system view.
system-view
Enter interface view.
interface interface-type interface-number
Configure the prefix information in RA messages.
ipv6 nd ra prefix { ipv6-prefix prefix-length | ipv6-prefix/prefix-length } [ valid-lifetime preferred-lifetime [ no-autoconfig | off-link ] * | no-advertise ]
By default, no prefix information is configured for RA messages, and the IPv6 address of the interface sending RA messages is used as the prefix information. If the IPv6 address is manually configured, the prefix uses a fixed valid lifetime of 2592000 seconds (30 days) and a preferred lifetime of 604800 seconds (7 days). If the IPv6 address is automatically obtained, the prefix uses the valid lifetime and preferred lifetime configured for the IPv6 address.
Configure the default settings for prefixes advertised in RA messages.
ipv6 nd ra prefix default [ valid-lifetime preferred-lifetime [ no-autoconfig | off-link ] * | no-advertise ]
By default, no default settings are configured for prefixes advertised in RA messages.
Turn off the MTU option in RA messages.
ipv6 nd ra no-advlinkmtu
By default, RA messages contain the MTU option.
Specify unlimited hops in RA messages.
ipv6 nd ra hop-limit unspecified
By default, the maximum number of hops in RA messages is 64.
Set the M flag bit to 1.
ipv6 nd autoconfig managed-address-flag
By default, the M flag bit is set to 0 in RA advertisements. Hosts receiving the advertisements will obtain IPv6 addresses through stateless autoconfiguration.
Set the O flag bit to 1.
ipv6 nd autoconfig other-flag
By default, the O flag bit is set to 0 in RA advertisements. Hosts receiving the advertisements will acquire other configuration information through stateless autoconfiguration.
Set the router lifetime in RA messages.
ipv6 nd ra router-lifetime time
By default, the router lifetime is 1800 seconds.
Set the NS retransmission timer.
ipv6 nd ns retrans-timer value
By default, an interface sends NS messages every 1000 milliseconds, and the value of the Retrans Timer field in RA messages is 0.
Set the router preference in RA messages.
ipv6 nd router-preference { high | low | medium }
By default, the router preference is medium.
Set the reachable time.
ipv6 nd nud reachable-time time
By default, the neighbor reachable time is 30000 milliseconds, and the value of the Reachable Time field in sent RA messages is 0.