HP Cisco MDS 9216A Cisco MDS 9000 Family Command Reference Guide - Release 4.x - Page 681
ipv6 nd
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Chapter 11 I Commands ipv6 nd Send documentation comments to [email protected] ipv6 nd To configure IPv6 neighbor discovery commands on the interface, use the ipv6 nd command in interface configuration submode. To remove IPv6 neighbor discovery configuration commands, use the no form of the command. ipv6 nd {dad attempts number | reachable-time time | retransmission-time time} no ipv6 nd {dad attempts number | reachable-time time | retransmission-time time} Syntax Description dad attempts number reachable-time time retransmission-time time Configures duplicate address detection (DAD) attempts. The range is 0 to 15. Configures reachability time. Specifies the reachability time in milliseconds. The range is 1000 to 3600000. Configures the retransmission timer. Specifies the retransmission time in milliseconds. The range is 1000 to 3600000. Defaults DAD attempts: 0. Reachable-time: 30000 milliseconds. Retransmission-time: 1000 milliseconds. Command Modes Interface configuration submode. Command History Release 3.0(1) Modification This command was introduced. Usage Guidelines A router must be able to determine the link-local address for each of its neighboring routers in order to ensure that the target address (the final destination) in a redirect message identifies the neighbor router by its link-local address. For static routing, the address of the next-hop router should be specified using the link-local address of the router; for dynamic routing, all IPv6 routing protocols must exchange the link-local addresses of neighboring routers. Note A high number of DAD attempts (greater than 2) can delay address assignment. For complete information about IPv6 neighbor discovery, refer to the Cisco MDS 9000 Family CLI Configuration Guide. Examples The following example sets the duplicate address detection attempts count to 2. switch# config terminal switch(config)# interface gigabitethernet 2/2 switch(config-if)# ipv6 nd dad attempts 2 OL-18089-01, Cisco MDS NX-OS Release 4.x Cisco MDS 9000 Family Command Reference 11-75
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