IPv6 Neighbor Discovery Configuration

Neighbor Discover (ND) 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 devices.

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 or enable the following IPv6 Neighbor Discovery features:

• Neighbor solicitation messages for duplicate address detection.
• Router advertisement (RA) messages:
  • Interval between RA messages
  • Value that indicates a router is advertised as a default router (for use by all nodes on a given link)
  • Prefixes advertised in RA messages
  • Flags for host stateful autoconfiguration
  • Domain names
  • Recursive DNS server addresses
  • IPv6 address advertisement suppression
• Amount of time during which an IPv6 node considers a remote node reachable (for use by all nodes on a given link).
• The maximum number of IPv6 neighbors and IPv6 cache entries for ICX 7850 devices.