Distance vektor routing protokol

Dynamic routing is the most common choice for large networks like the one shown. Distance vector routing protocols include RIP, IGRP, and EIGRP.

RIP

Routing Information Protocol (RIP) was originally specified in RFC 1058. It has the following key characteristics:
-Hop count is used as the metric for path selection.
-If the hop count for a network is greater than 15, RIP cannot supply a route to that network.
-Routing updates are broadcast or multicast every 30 seconds, by default.

IGRP

Interior Gateway Routing Protocol (IGRP) is a proprietary protocol developed by Cisco. IGRP has the following key design characteristics:
-Bandwidth, delay, load and reliability are used to create a composite metric.
-Routing updates are broadcast every 90 seconds, by default.
-IGRP is the predecessor of EIGRP and is now obsolete.

EIGRP

Enhanced IGRP (EIGRP) is a Cisco proprietary distance vector routing protocol. EIGRP has these key characteristics:
-It can perform unequal cost load balancing.
-It uses Diffusing Update Algorithm (DUAL) to calculate the shortest path.
-here are no periodic updates as with RIP and IGRP. Routing updates are sent only when there is a change in the topology.

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