H3C S5100-SI Series Operation Manual page 897

Operation Manual – IPv6 Management
H3C S5100-SI/EI Series Ethernet Switches
Follow these steps to configure a static neighbor entry:
Enter system view
Configure a static
neighbor entry
II. Configuring the maximum number of neighbors dynamically learned
The device can dynamically acquire the link-layer address of a neighbor node through
NS and NA messages and add it to the neighbor table. Too large a neighbor table may
lead to the forwarding performance degradation of the device. Therefore, you can
restrict the size of the neighbor table by setting the maximum number of neighbors that
an interface can dynamically learn. When the number of dynamically learned neighbors
reaches the threshold, the interface will stop learning neighbor information.
Follow these steps to configure the maximum number of neighbors dynamically
learned:
Enter system view
Enter VLAN interface view
Configure the maximum
number of neighbors
dynamically learned by an
interface
III. Configuring 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.
Follow these steps to configure the attempts to send an NS message for duplicate
address detection:
To do...
system-view
ipv6 neighbor ipv6-address
mac-address { vlan-id port-type
port-number | interface
interface-type interface-number }
To do...
system-view
interface interface-type
interface-number
ipv6 neighbors
max-learning-num
number
Use the command...
Use the command...
1-14
Chapter 1 IPv6 Configuration
Remarks
—
Required
Remarks
—
—
Optional
The default value is 2,048