Quick Reference Guide to the Ethernet System
High-level protocols have their own system of addresses, such as the 32-bit address used in the current version of IP. The high-level IP-based networking software in a given station is aware of its own 32-bit IP address and can read the 48-bit Ethernet address of its network interface, but it doesn't know what the Ethernet addresses of other stations on the network may be.
To make things work, there needs to be some way to discover the Ethernet addresses of other IP-based stations on the network. For several high-level protocols, including TCP/IP, this is done using yet another high-level protocol called the Address Resolution Protocol (ARP). As an example of how Ethernet and one family of high-level protocols interact, let's take a quick look at how the ARP protocol functions.
Quick Reference Guide to the Ethernet System - 04 SEP 95 [Next] [Previous] [Top] [Copyright] [Books About Ethernet]
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