15-16
Parameters
Description
O flag
This field determines whether hosts use the stateful autoconfiguration to
acquire other configuration information.
If the O flag is set to 1, hosts use the stateful autoconfiguration (for example,
through a DHCP server) to acquire other configuration information.
Otherwise, hosts use the stateless autoconfiguration to acquire other
configuration information.
Router Lifetime
This field is used to set the lifetime of the router that sends RA messages to
serve as the default router of hosts. According to the router lifetime in the
received RA messages, hosts determine whether the router sending RA
messages can serve as the default router.
Retrans Timer
If the device fails to receive a response message within the specified time
after sending an NS message, the device retransmits the NS message.
Reachable Time
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 a neighbor after the specified
reachable time expires, the device reconfirms whether the neighbor is
reachable.
The values of the Retrans Timer and the Reachable Time configured for an interface are sent to
hosts via RA messages. Furthermore, this interface sends NS messages at the interval of
Retrans Timer and considers a neighbor reachable within the Reachable Time.
Follow these steps to configure parameters related to RA messages:
To do…
Use the command…
Remarks
Enter system view
system-view
—
Configure the hop limit
ipv6 nd hop-limit
value
Optional
64 by default.
Enable the consistency check
on the source MAC address
of ND packets
ipv6 nd mac-check enable
Optional
Disabled by default.
Enter interface view
interface interface-type
interface-number
—
