User`s guide

145
TCP/IP Network Basics
TCP/IP Protocols
TCP/IP Protocol
Overview
This table summarizes the components of each layer and shows the
applicable Request for Comments (RFC) for each component.
Layer Component Name Description Specification
Internet IP - Internet Protocol The lowest level protocol by which data are sent
from one computer to another on the Internet.
RFC 791*
RFC 2460**
ICMP - Internet Control
Message Protocol
A message control and error-reporting protocol
between IP devices on a network.
RFC 792
ARP - Address
Resolution Protocol
A protocol for translating IP addresses into
Ethernet addresses.
RFC 826
Transport TCP - Transmission
Control Protocol
A connection-oriented protocol running over IP
that reliably delivers data.
RFC 793
UDP - User Datagram
Protocol
A datagram-oriented protocol running over IP RFC 768
Application DNS - Domain Name
System
A protocol for translating a Hostname into an IP
address.
RFC 1034 and
RFC 1035
DHCP - Dynamic Host
Configuration Protocol
A protocol for obtaining TCP/IP parameters from
a central server.
RFC 2131 and
RFC 2132
FTP - File Transfer
Protocol
A protocol that defines how files are transferred
from one host to another on a network.
RFC 959
HTTP - Hypertext
Transfer Protocol
A protocol that defines how files are exchanged
on the Internet
RFC 1945 and
RFC 2068
* = IPv4 (current standard), ** = IPv6 (proposed new standard)