HP FlexNetwork MSR2003 Configuration Manual page 231

Parameter
O flag
Router Lifetime
Retrans Timer
Reachable Time
Router Preference
The maximum interval for sending RA messages should be less than (or equal to) the router lifetime
in RA messages. In this way, the router can be updated by an RA message before expiration.
The values of the NS retransmission timer and the reachable time configured for an interface are
sent in RA messages to hosts. This interface sends NS messages at the interval of the NS
retransmission timer and considers a neighbor reachable within the reachable time.
Enabling sending of RA messages
Step
1. Enter system view.
2. Enter interface view.
3. Enable sending of RA
messages.
4. Configure the maximum and
minimum intervals for
sending RA messages.
Configuring parameters for RA messages
Step
1. Enter system view.
2. Enter interface view.
3. Configure the prefix
information in RA
messages.
Description
Determines whether a host uses stateful autoconfiguration to obtain configuration
information other than IPv6 address.
If the O flag is set to 1, the host uses stateful autoconfiguration (for example, from
a DHCPv6 server) to obtain configuration information other than IPv6 address.
Otherwise, the host uses stateless autoconfiguration.
Tells the receiving hosts how long the advertising router can live. If the lifetime of
a router is 0, the router cannot be used as the default gateway.
If the device does not receive a response message within the specified time after
sending an NS message, it retransmits the NS message.
If the neighbor reachability detection shows that a neighbor is reachable, the
device considers the neighbor reachable within the specified reachable time. If
the device needs to send a packet to the neighbor after the specified reachable
time expires, the device reconfirms whether the neighbor is reachable.
Specifies the router preference in a RA message. A host selects a router as the
default gateway according to the router preference. If router preferences are the
same, the host selects the router from which the first RA message is received.
Command
system-view
interface interface-type
interface-number
undo ipv6 nd ra halt
ipv6 nd ra interval
max-interval-value
min-interval-value
Command
system-view
interface interface-type
interface-number
ipv6 nd ra prefix { ipv6-prefix
prefix-length |
ipv6-prefix/prefix-length }
valid-lifetime preferred-lifetime
217
Remarks
N/A
N/A
The default setting is disabled.
By default, the maximum interval for
sending RA messages is 600 seconds,
and the minimum interval is 200
seconds.
The device sends RA messages at
random intervals between the maximum
interval and the minimum interval.
The minimum interval should be less
than or equal to 0.75 times the
maximum interval.
Remarks
N/A
N/A
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