IPv6 Neighbor Discovery

The Neighbor Discovery feature for IPv6 uses IPv6 ICMP messages to perform the following tasks:

• Determine the link-layer address of a neighbor on the same link.
• Verify that a neighbor is reachable.
• Track neighbor routers.

An IPv6 host is required to listen for and recognize the following addresses that identify itself:

• Link-local address.
• Assigned unicast address.
• Loopback address.
• All-nodes multicast address.
• Solicited-node multicast address.
• Multicast address to all other groups to which it belongs.

You can adjust the following IPv6 Neighbor Discovery features:

• Neighbor solicitation messages for duplicate address detection.
• Router advertisement messages:
  • Interval between router advertisement messages.
  • Value that indicates a router is advertised as a default router (for use by all nodes on a link).
  • Prefixes advertised in router advertisement messages.
  • Flags for host stateful autoconfiguration.
  

  Note

  For all solicitation and advertisement messages, SLX-OS uses seconds as the unit of measure instead of milliseconds.
• Amount of time during which an IPv6 node considers a remote node reachable (for use by all nodes on a given link).
• The interval after which the IPv6 Neighbor Discovery cache is deleted or refreshed.

Note

Neighbor Discovery is not supported on tunnel interfaces.