TCP/IP Address Resolution Protocol (ARP)
ARP is a full-featured, dynamic resolution protocol used to match IP addresses to underlying data link layer addresses. Originally developed for Ethernet, it has now been generalized to allow IP to operate over a wide variety of layer 2 technologies.
Note
The Address Resolution Protocol described here is used for resolving unicast addresses in version 4 of the Internet Protocol (IPv4). Multicast addresses under IPv4 use a direct mapping method, and IPv6 uses the new Neighbor Discovery (ND) Protocol instead of ARP. These methods are both discussed near the end of this chapter.
Tip
RELATED INFORMATION For a discussion of ARP-related issues in networks with mobile IP devices, see Chapter 30.
Tip
RELATED INFORMATION ...
Get TCP/IP Guide now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
