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CHAPTER
31-1
Cisco ASA 5500 Series Configuration Guide using ASDM
31
Configuring IPv6 Neighbor Discovery
This chapter describes how to enable and configure IPv6 neighbor discovery on the ASA and includes
the following sections:
• Information About IPv6 Neighbor Discovery, page 31-1
• Licensing Requirements for IPv6 Neighbor Discovery, page 31-4
• Guidelines and Limitations, page 31-4
• Default Settings for IPv6 Neighbor Discovery, page 31-6
• Configuring the Neighbor Solicitation Message Interval, page 31-6
• Configuring the Neighbor Reachable Time, page 31-7
• Configuring the Router Advertisement Transmission Interval, page 31-7
• Configuring the Router Lifetime Value, page 31-8
• Configuring DAD Settings, page 31-8
• Configuring IPv6 Addresses on an Interface, page 31-9
• Suppressing Router Advertisement Messages, page 31-10
• Configuring the IPv6 Prefix, page 31-10
• Adding an IPv6 Static Neighbor, page 31-11
• Editing Static Neighbors, page 31-11
• Deleting Static Neighbors, page 31-12
• Viewing and Clearing Dynamically Discovered Neighbors, page 31-12
• Additional References, page 31-13
• Feature History for IPv6 Neighbor Discovery, page 31-13
Information About IPv6 Neighbor Discovery
The IPv6 neighbor discovery process uses ICMPv6 messages and solicited-node multicast addresses to
determine the link-layer address of a neighbor on the same network (local link), verify the readability of
a neighbor, and keep track of neighboring routers.
Nodes (hosts) use neighbor discovery to determine the link-layer addresses for neighbors known to
reside on attached links and to quickly purge cashed values that become invalid. Hosts also use neighbor
discovery to find neighboring routers that are willing to forward packets on their behalf. In addition,