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What is Dynamic Routing and different types of Dynamic Routing

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Static routing allows routing tables in specific routers to be set up by the network administrator. Dynamic routing use Routing Protocols that dynamically discover network destinations and how to get to them. Dynamic routing allows routing tables in routers to change if a router on the route goes down or if a new network is added.

In Dynamic Routing, Routing Protocols running in Routers continuously exchange network status updates between each other as broadcast or multicast. With the help of routing updates messages sent by the Routing Protocols, routers can continuously update the routing table when ever a network topolgy change happens.

Examples of Routing Protocols are Routing Information Protocol (RIP), Enhanced Interior Gateway Routing Protocol (EIGRP) and Open Shortest Path First (OSPF).

There are three basic types of routing protocols.

Distance-vector Routing Protocols: Distance-vector Routing Protocols use simple algorithms that calculate a cumulative distance value between routers based on hop count.

Example: Routing Information Protocol Version 1 (RIPv1) and Interior Gateway Routing Protocol (IGRP)

Link-state Routing Protocols: Link-state Routing Protocols use sophisticated algorithms that maintain a complex database of internetwork topology.

Example: Open Shortest Path First (OSPF) and Intermediate System to Intermediate System (IS-IS)

Hybrid Routing Protocols: Hybrid Routing Protocols use a combination of distance-vector and link-state methods that tries to incorporate the advantages of both and minimize their disadvantages.

Example: Enhanced Interior Gateway Routing Protocol (EIGRP), Routing Information Protocol Version 2 (RIPv2)

              Jajish Thomason Google+
Related Topics
• What is Routing Metric Value
• Introduction to Static Routes and Default Routes
• How to configure Static Routes and Default Routes
• Introduction to Routing Information Protocol (RIP)
• How to configure Routing Information Protocol (RIP)
• How to configure Interior Gateway Routing Protocol (IGRP)
• What is Routing Loop and how to avoid Routing Loop
• Introduction to Link State Routing Protocols
• Introduction to Open Shortest Path First (OSPF) Protocol
• How to configure Open Shortest Path First (OSPF)
• Introduction to Hybrid Routing Protocols
• Introduction to Enhanced Interior Gateway Routing Protocol (EIGRP)
• How to configure Enhanced Interior Gateway Routing Protocol (EIGRP)
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