Network Protocols

Protocols can be classified as :

1) Routed Protocols

2) Routing Protocols

3) Non Routable Protocols

ROUTED PROTOCOLS

ROUTED PROTOCOLS are nothing more than data being transported across the networks. Routed protocols include:

• Internet Protocol
  • Telnet
  • Remote Procedure Call (RPC)
  • SNMP
  • SMTP
• Novell IPX
• Open Standards Institute networking protocol
• DECnet
• Appletalk
• Banyan Vines
• Xerox Network System (XNS)

ROUTING PROTOCOLS

ROUTING PROTOCOLS are the software that allow routers to dynamically advertise and learn routes, determine which routes are available and which are the most efficient routes to a destination. Routingprotocols used by the Internet Protocol suite include:

• Routing Information Protocol (RIP and RIP II)
• Open Shortest Path First (OSPF)
• Intermediate System to Intermediate System (IS-IS)
• Interior Gateway Routing Protocol (IGRP)
• Cisco's Enhanced Interior Gateway Routing Protocol (EIGRP)
• Border Gateway Protocol (BGP)

NON-ROUTABLE PROTOCOLS

NON-ROUTABLE PROTOCOLS cannot survive being routed. Non-routable protocols presume that all computers they will ever communicate with are on the same network (to get them working in a routed environment, you must bridge the networks). Todays modern networks are not very tolerant of protocols that do not understand the concept of a multi-segment network and most of these protocols are dying or falling out of use.

• NetBEUI
• DLC
• LAT
• DRP
• MOP