H3C S3100 Series Operation Manual page 920

dynamically learned neighbors reaches the threshold, the interface will stop learning neighbor
information.
Table 1-7 Configure the maximum number of neighbors dynamically learned:
To do...
Enter system view
Enter VLAN interface view
Configure the maximum number of
neighbors dynamically learned by
an interface
Configure the attempts to send an ns message for duplicate address detection
The device sends a neighbor solicitation (NS) message for duplicate address detection. If the device
does not receive a response within a specified time (set by the ipv6 nd ns retrans-timer command),
the device continues to send an NS message. If the device still does not receive a response after the
number of attempts to send an NS message reaches the maximum, the device judges the acquired
address is available.
Table 1-8 Configure the attempts to send an NS message for duplicate address detection
To do...
Enter system view
Enter VLAN interface view
Configure the attempts to send an
NS message for duplicate address
detection
Configure the NS Interval
After a device sends an NS message, if it does not receive a response within a specific period, the
device will send another NS message. You can configure the interval for sending NS messages.
Table 1-9 Configure the NS interval
To do...
Enter system view
Enter VLAN interface view
Specify the NS interval
Configure the neighbor reachable timeout time on an interface
After a neighbor passed the reachability detection, the device considers the neighbor to be reachable in
a specific period. However, the device will examine whether the neighbor is reachable again when there
is a need to send packets to the neighbor after the neighbor reachable timeout time elapsed.
Use the command...
system-view
interface interface-type
interface-number
ipv6 neighbors
max-learning-num number
Use the command...
system-view
interface interface-type
interface-number
ipv6 nd dad attempts value
Use the command...
system-view
interface interface-type
interface-number
ipv6 nd ns retrans-timer value
1-16
Remarks
—
—
Optional
The default value is 2,048
Remarks
—
—
Optional
1 by default. When the value
argument is set to 0, the duplicate
address detection is disabled.
Remarks
—
—
Optional
1,000 milliseconds by default