IPv6 First Hop Security
547
OL-32830-01 Command Line Interface Reference Guide
25
25.46 ipv6 neighbor binding max-entries
To globally specify the maximum number of dynamic entries that are allowed to be
inserted in the Binding table cache, use the ipv6 neighbor binding max-entries
command in Global Configuration mode. To return to the default, use the no form of
this command.
Syntax
ipv6 neighbor binding max-entries {[vlan-limit
number
] [interface-limit
number
]
[mac-limit
number
]}
no ipv6 neighbor binding max-entries [vlan-limit] [interface-limit] [mac-limit]
Parameters
•
vlan-limit
number
—Specifies a neighbor binding limit per number of VLANs.
•
interface-limit
number
—Specifies a neighbor binding limit per port.
•
mac-limit
number
—Specifies a neighbor binding limit per MAC address.
Default Configuration
This command is disabled.
Command Mode
Global Configuration mode
User Guidelines
This command is used to control the contents of the Binding table. This command
specifies the maximum number of dynamic entries that can be inserted in the
Binding table cache. After this limit is reached, new entries are refused, and a
Neighbor Discovery Protocol (NDP) traffic source with a new entry is dropped.
If the maximum number of entries specified is lower than the current number of
entries in the database, no entries are cleared, and the new threshold is reached
after normal cache attrition.
Example
The following example shows how to specify globally the maximum number of
entries that can be inserted into the cache per MAC:
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