Chapter 3. ARP and RARP

Terms you'll need to understand:

• Address Resolution Protocol (ARP)

• ARP Cache

• Ethernet Address

• /etc/ethers file

• /etc/inet/ hosts file

• /tftpboot directory

• in.rarpd

• Reverse Address Resolution Protocol (RARP)

Concepts you'll need to master:

• Describe the function and management of ARP.

• Describe the function and management of RARP.

This chapter introduces two protocols that operate between the Network Interface layer and the Internet layer of the TCP/IP model ”ARP and RARP. These protocols are used to provide address resolution between ethernet and IP addresses. This chapter explores what these protocols are and how they work, as well as the files they reference.