H3C Technologies H3C SecPath F1000-E - Manual (Page 115)

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CAUTION:
You can use either method 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 use the second method, 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 associates the VLAN interface with the IPv6 address to identify
the static neighbor entry uniquely.
Configuring the Maximum Number of Neighbors Dynamically
Learned
The device can dynamically acquire the link-layer address of a neighboring node through NS and NA
messages and add it into the neighbor table. A large table may reduce the forwarding performance of
the device. 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:
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 by
an interface
ipv6 neighbors
max-learning-num number
Optional
Configuring Parameters Related to RA Messages
You can enable an interface to send RA messages, and configure 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 4 lists the configurable parameters in an RA message and their
descriptions.
Table 4 Parameters in an RA message and their descriptions
Parameters Description
Cur Hop Limit
When sending an IPv6 packet, a host uses the value to fill the Hop Limit field in IPv6
headers. The value is also filled into the Hop Limit field in the response packet of a
device.
Prefix Information
options After receiving the prefix information advertised by the device, the hosts on the
same link can perform stateless autoconfiguration.
MTU This field is used to ensure that all nodes on a link use the same MTU value.