COMPUTER NETWORKING LESSON 13 ROUTING PROTOCOLS

ROUTING PROTOCOL

determine how your data gets to its destination and

helps to make that process as smooth as possible.

ROUTING

is one of the most fundamental areas of networking that an

administrator has to know.

ROUTING

It is the process of moving packets across a network from one host to

another and selecting best paths in a network. It is often confused with

bridging, which performs a similar function.

ROUTING PROTOCOL

A generic term that refers to a formula, or protocol, used by a router

to determine the appropriate path over which data is transmitted.

STATIC ROUTING

(administrator manually

enters the routes in the router's table)

DYNAMIC ROUTING

(happens

automatically using routing protocols).

ROUTING TABLES

Routing protocols were created for routers. These protocols have

been designed to allow the exchange of — —-, or known networks,

between routers.

DISTANCE VECTOR ROUTING

routers compute the best path from information

passed to them from neighbors.

DISTANCE

Identifies how far it is to the destination network and is based on a

metric such as the hop count, cost, bandwidth, delay, and more

VECTOR

Specifies the direction of the next-hop router or exit interface to reach

the destination

DISTANCE VECTOR ROUTING

Is a simple routing protocol used in packet-switched networks that utilizes

distance to decide the bestpacket forwarding path

ROUTING INFORMATION PROTOCOL

RIP MEANING

INTERIOR GATEWAY ROUTING PROTOCOL

IGRP MEANING

ENHANCED INTERIOR GATEWAY ROUTING PROTOCOL

EIGRP MEANING

RIP

UES HOP COUNT AS ITS METRIC AND EACH ROUTER THE PACKET GOES THROUGH IS 1 HOP

DISTANCE VECOTR ROUTING ALGORITHM

PASSES COMPLETE ROUTING TABLES TO NEIGHBHOR ROUTERS

RIP

is “one of the oldest distance-vector routing protocols which

employ the hop count as a routing metric. — prevents routing loops by

implementing limit on the number of hops allowed in a path from source to

destination”.

OPEN SHORTEST PATH FIRST

OSPF MEANING

HOP

WHICH IS THE NUMBER OF SUBNETS TRAVERSED ALONG THE SHORTEST PATH FROM SOURCE ROUTER TO DESTINATION SUBNET

IGRP

was developed in the mid-1980s as a Cisco

proprietary protocol to help overcome some of limitations of RIP,

such as the single metric of hop count. It is used by routers to exchange

routing data within an autonomous system.

LINK STATE ROUTING

routers each have a copy of the entire network map and

compute best routes from this local map. It is used in packet switching networks

for computer communications.

INTERIOR GATEWAY PROTOCOL

IGP MEANING

AUTONOMOUS SYSTEM

AS MEANING

OSPF

is one of a family of IP Routing protocols, and is an Interior

Gateway Protocol (IGP) for the Internet, used to distribute IP routing

information throughout a single Autonomous System (AS) in an IP network.

SHORTEST PATH FIRST

SPF MEANING

DIJKSTRA ALGORITHM

TOHER TERM FOR SPF

SPF

In such algorithms, each node attempts to route packets to their

destinations over paths of minimum distance and updates the

distances periodically to adapt topological and traffic changes.

IS IS PROTOCOL

is an Interior Gateway Protocol that uses packet-

switched networks to support efficient autonomous system routing for

Internet service providers and large enterprises.

INTERMEDIATE SYSTEM TO INTERMEDIATE SYSTEM.

ISIS MEANING

HYBRID ROUTING

commonly referred to as balanced-hybrid routing, is a

combination of distance-vector routing, which works by sharing its knowledge of

the entire network with its neighbors and link-state routing which works by having

the routers tell every router on the network about its closest neighbors.

BALANCED HYBRID ROUTING

OTHER TERM FOR HYBRID ROUTING

HYBRID ROUTING

is a third classification of routing algorithm.

CISCO

WHO DEVELOPED EIGRP

EIGRP

is an evolved version

of IGRP that addresses the demands of large-scale internetworks and the changes

in network technology that have been developed since the implementation of IGRP.

1990S

WHEN DID CISCO DEVELOPED THE EIGRP

BGP

is the protocol used throughout the

Internet to exchange routing information between networks.

BGP

It is the language spoken

by routers on the Internet to determine how packets can be sent from one router

to another to reach their final destination.

BORDER GATEWAY PROTOCOL

BGP MEANING

EXTERNAL BORDER GATEWAY PROTOCOL

EBGP MEANING

BGP

is a standardized exterior gateway protocol

designed to exchange routing and reachability information among autonomous systems

(AS) on the Internet.

ROUTING INFORMAITON BASED

RIB MEANIN

OSPF AND IS IS

EXAMPLE OF INTERNAL ROUTING PROTOCOL