Configuring The Maximum Number Of Neighbors Dynamically Learned; Configuring Parameters Related To An Ra Message - 3Com MSR 50 Series Configuration Manual

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Configuring the
Maximum Number of
Neighbors Dynamically
Learned
Configuring Parameters
Related to an RA
Message
Configure an IPv6 address and link-layer address for a port in a VLAN.
■
Follow these steps to configure a static neighbor entry:
To do...
Enter system view
Configure a static
neighbor entry
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.
The device can dynamically acquire the link-layer address of a neighbor node and
add it into the neighbor table 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:
To do...
Enter system view
Enter interface view
Configure the maximum
number of neighbors
dynamically learned by an
interface
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 39 lists the configurable parameters in an RA message and their
descriptions.
Use the command...
system-view
ipv6 neighbor ipv6-address mac-address { vlan-id
port-type port-number | interface interface-type
interface-number }
Use the command...
system-view
interface interface-type
interface-number
ipv6 neighbors
max-learning-num number
Configuring IPv6 NDP 667
Remarks
-
Required
Remarks
-
-
Optional
The value ranges from 1 to
2,048 and defaults to 1,024.