Cisco Nexus 7000 Series Command Reference Manual page 479

I Commands
If the tracking reachable-lifetime command is configured, it overrides ipv6 neighbor binding
reachable-lifetime configuration. If the tracking stale-lifetime command is configured, it overrides ipv6
neighbor binding stale-lifetime configuration.
Examples The following example shows how to change the reachable lifetime for binding entries to 100 seconds:
switch(config)# ipv6 neighbor binding reachable-entries 100
Related Commands
Command
ipv6 neighbor tracking
tracking
Description
Tracks entries in the binding table.
Overrides the default tracking policy on a port.
Cisco Nexus 7000 Series Security Command Reference
ipv6 neighbor binding
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