Neighbor Discovery Protocol

The Neighbor Discovery Protocol (NDP), as defined in RFC 2461, defines mechanisms for the following functions:

In IPv4, MAC address resolution is done by ARP. For IPv6, this functionality is handled by NDP. The router maintains a cache of IPv6 addresses and their corresponding MAC addresses and allows the system to respond to requests from other nodes for the MAC address of the IPv6 addresses configured on the interfaces.

Also supported is router discovery—the ability to send out router advertisements that can be used by a host to discover the router. The advertisements sent out contain the prefixes and configuration parameters that allow the end nodes to auto-configure their addresses. The switch also responds to requests from nodes for router advertisements.

The following settings can be configured on an interface to manage router advertisements:
You can configure the following values, that are advertised by the switch:
Additionally, you can configure the following values for each prefix on the prefix list associated with an interface:


ExtremeXOS software does not support host processing of neighbor router advertisements.