Cisco Nexus 7000 Series, Справочник по командам

Страница: 483 / 1018

ipv6 neighbor tracking
To track entries in the binding table, use the ipv6 neighbor tracking command in global configuration mode.
To disable entry tracking, use the no form of this command.
ipv6 neighbor tracking [ retry-interval value ]
no ipv6 neighbor tracking
[
retry-interval value
]
Syntax Description
(Optional) Verifies a static entry ’ s reachability at the
configured interval time, in seconds, between two
probings. The range is from 1 to 3600, and the default
is 300.
retry-interval value
Command Default
Entries in the binding table are not tracked.
Command Modes
Global configuration (config)
Command History
Modification Release
This command was introduced. 8.0(1)
Usage Guidelines
The ipv6 neighbor tracking command enables the tracking of entries in the binding table. Entry reachability
is tested at every interval configured by the optional retry-interval keyword (or every 300 seconds, which
is the default retry interval) using the neighbor unreachability detection (NUD) mechanism used for directly
tracking neighbor reachability.
Reachability can also be established indirectly by using Neighbor Discovery Protocol (NDP) inspection up
to the VERIFY_MAX_RETRIES value (the default is 10 seconds). When there is no response, entries are
considered stale and are deleted after the stale lifetime value is reached (the default is 1440 minutes).
When the ipv6 neighbor tracking command is disabled, entries are considered stale after the reachable
lifetime value is met (the default is 300 seconds) and deleted after the stale lifetime value is met.
To change the default values of neighbor binding entries in a binding table, use the ipv6 neighbor binding
command.
Examples The following example shows how to track entries in a binding table:
switch(config)# ipv6 neighbor tracking
Cisco Nexus 7000 Series Security Command Reference
457
I Commands
ipv6 neighbor tracking