3Com Switch 8800 Advanced Software V5 Configuration Guide

Configuring IPv6 NDP 223
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CAUTION: You can adopt either of the two methods above to configure a static
neighbor entry for a VLAN interface.
■ After a static neighbor entry is configured by using the first method, the device
needs to resolve the corresponding layer 2 port information of the VLAN
interface.
■ If you adopt the second method to configure a static neighbor entry, you
should ensure that the corresponding VLAN interface exists and that the layer 2
port specified by port-type port-number belongs to the VLAN specified by
vlan-id. After a static neighbor entry is configured, the device relates the VLAN
interface to an IPv6 address to uniquely identify a static neighbor entry.
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. Too large a neighbor table from which neighbor
entries can be dynamically acquired 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:
Configuring Parameters
Related to an RA
Message
You can configure whether the interface sends an RA message, the interval for
sending RA messages, and parameters in RA messages. After receiving an RA
message, a host can use these parameters to perform corresponding operations.
Table 22 lists the configurable parameters in an RA message and their
descriptions.
Configure a static neighbor
entry
ipv6 neighbor ipv6-address
mac-address { vlan-id
port-type port-number |
interface interface-type
interface-number }
Required
To do... Use the command... Remarks
To do... Use the command... Remarks
Enter system view system-view -
Enter interface view interface interface-type
interface-number
-
Configure the maximum
number of neighbors
dynamically learned on an
interface
ipv6 neighbors
max-learning-num number
Optional
1024 by default.