Neighbor Discovery Protocol (NDP) | 981
ipv6 nd ra-lifetime
e
Configure the router lifetime value in the IPv6 router advertisements on an interface. The description
of router lifetime from RFC 2461(http://tools.ietf.org/html/rfc2461) is:
Router Lifetime: 16-bit unsigned integer. The lifetime associated with the default router in units of
seconds. The maximum value corresponds to 18.2 hours. A Lifetime of 0 indicates that the router is not
a default router and SHOULD NOT appear on the default router list. The Router Lifetime applies only
to the router's usefulness as a default router; it does not apply to information contained in other
message fields or options. Options that need time limits for their information include their own lifetime
fields.
Syntax
ipv6 nd ra-lifetime seconds
To restore the default values, use the no ipv6 nd ra-lifetime command.
Parameters
Defaults
9000 seconds
Command Modes
INTERFACE
ipv6 nd reachable-time
e
Configure the amount of time that a remote IPv6 node is considered available after a reachability
confirmation event has occurred. The description of reachable time from RFC 2461(http://
tools.ietf.org/html/rfc2461) is:
Reachable Time: 32-bit unsigned integer. The time, in milliseconds, that a node assumes a neighbor is
reachable after having received a reachability confirmation. Used by the Neighbor Unreachability
Detection algorithm. A value of zero means unspecified (by this router).
Syntax
ipv6 nd reachable-time {milliseconds}
To restore the default time, use the no ipv6 nd reachable-time command.
Parameters
Defaults
3600000 milliseconds
Command Modes
INTERFACE
ipv6 nd suppress-ra
e
Suppress the IPv6 router advertisement transmissions on an interface.
Syntax
ipv6 nd suppress-ra
To enable the sending of IPv6 router advertisement transmissions on an interface, use the no ipv6 nd
suppress-ra command.
seconds
Enter the lifetime value in seconds.
Range: 0 to 9000
milliseconds
Enter the leachability time in milliseconds.
Range: 0 to 3600000
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