The chapter discusses the benefits and advantages of a link-state routing protocol compared to a distance vector routing protocol. You will then examine the Shortest Path First (SPF) algorithm and how it is used to build a topology map of the network.
Jan 04, 2010 · The routing protocol also specifies how routers in a networkshare information with each other and report changes. The routing protocol enables a network to make dynamicadjustments to its conditions, so routing decisions do not have to be predetermined and static.
The unicast routing information is derived from the unicast routing tables, independently of the unicast routing protocol that constructed them. In PIM-SM, even if a receiver has switched to source rooted trees for all active sources, state still needs to be maintained for the RP rooted tree at the shared tree routers.
Routing Metric basically refers to the data which is used by a routing protocol to make decisions regarding the route of data. In this case, better Routing Networks allow the protocols to make more informed and intelligent decisions which also prove to be quiet beneficial for the networks.
Adaptive routing protocols like RIP and OSPF are commonly used in larger networks to provide resiliency from temporary network failures. For an overview of how RIP and OSPF work, read my sidebar, Interior Gateway Protocols (IGPs). Dynamic Routing and Firewalls. The Firebox doesn't support dynamic, adaptive routing protocols.
Routing Information Protocol (RIP): Routing Information Protocol (RIP) is one of the first widely deployed routing protocols. RIP is a standardized Distance Vector protocol, designed for use on smaller networks and is supported on a wide variety of systems. It uses a Bellman-Ford Distance Vector algorithm.
According to  the main advantage of Routing information protocol is that it uses the User Datagram Protocol (UDP) and reserved port is 520. Their report also highlights that Routing Information Protocol (RIP) is poor and only suitable for using in smaller networks. As RIP chooses the best path based on hop counts, it may
Jul 17, 2005 · RIP V1(Routing Information Protocol) Public Protocol ; Classfull i.e.,No Subnetting/VLSM/IPv6 ; Max Hop Count 15 ; Update Time 30 sec ; Administrative Distance 120 ; RIP V2 ; Classless ; public ; IGRP(Interior Gateway Routing Protocol) Autonomous Number ; Update Time 90 sec ; Administrative Distance 100 ; Max Hop Count 255 ; Cisco ; OSPF(Open ...
When a router receives information about new or changed routes, it updates its own routing table and, in turn, passes the information to other routers. In this way, all routers have accurate routing tables that are updated dynamically and can learn about routes to remote networks that are many hops way.