Cisco Catalyst 3650 Series

tracking (IPv6 snooping)
To override the default tracking policy on a port, use the tracking command in IPv6 snooping policy
configuration mode.
tracking {enable [reachable-lifetime {value | infinite}] | disable [stale-lifetime {value | infinite}
Syntax Description
Enables tracking.enable
(Optional) Specifies the maximum amount of time a reachable entry
is considered to be directly or indirectly reachable without proof of
reachability.
•
The reachable-lifetime keyword can be used only with the
enable keyword.
•
Use of the reachable-lifetime keyword overrides the global
reachable lifetime configured by the ipv6 neighbor binding
reachable-lifetime command.
reachable-lifetime
Lifetime value, in seconds. The range is from 1 to 86400, and the
default is 300.
value
Keeps an entry in a reachable or stale state for an infinite amount of
time.
infinite
Disables tracking.disable
(Optional) Keeps the time entry in a stale state, which overwrites the
global stale-lifetime configuration.
•
The stale lifetime is 86,400 seconds.
•
The stale-lifetime keyword can be used only with the disable
keyword.
•
Use of the stale-lifetime keyword overrides the global stale
lifetime configured by the ipv6 neighbor binding stale-lifetime
command.
stale-lifetime
Command Default
The time entry is kept in a reachable state.
Command Modes
IPv6 snooping configuration
Command Reference, Cisco IOS XE Everest 16.5.1a (Catalyst 3650 Switches)
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tracking (IPv6 snooping)