15-15
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 the interface
ipv6 neighbors
max-learning-num number
Optional
By default, an interface on an
S5800 series Ethernet switch can
learn up to 8192 neighbors
dynamically; an interface on an
S5820X series Ethernet switch can
learn up to 4096 neighbors
dynamically.
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.
lists the configurable
parameters in an RA message and their descriptions.
Table 15-4
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 Cur Hop Limit field in
response messages 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.
M flag
This field determines whether hosts use the stateful autoconfiguration to
acquire IPv6 addresses.
If the M flag is set to 1, hosts use the stateful autoconfiguration (for example,
through a DHCP server) to acquire IPv6 addresses. Otherwise, hosts use the
stateless autoconfiguration to acquire IPv6 addresses, or in other words,
hosts generate IPv6 addresses according to their own link-layer addresses
and the prefix information advertised by the router.
