03-07-2012, 02:55 PM
Seminar on IP Routing Protocol
IP Routing Protocol.docx (Size: 547.88 KB / Downloads: 49)
INTRODUCTION
I’m going to discuss the IP routing process. This is an important subject to understand since it certain to all routers and configurations that use IP.IP routing is the process of moving packets from one network to another network using routers. And as before, by routers I mean Cisco routers. You must understand the differences between a routing protocol and a routed protocol .A routing protocol is used by routers to dynamically find all the networks in the internetwork and to ensure that all routers have the same routing table. Basically a routing protocol determines the path of a packet through an internetwork. Examples of routing protocol are RIP, RIPV2, EIGRP and OSPF. Once all routers know about all networks, a routed protocol can be used to send user data (packet) through the established enterprise. Routed protocols are assigned to an interface and determine the method of packet delivery. Examples of routed protocols
are IP and Ipv6.
Types of Routing
Routing types
1) Static routing
2) Default routing
3) Dynamic routing
Conclusion
IP routing protocols have tunable parameters that operators can set to control the flow of traffic through their networks. Optimization based on local-search techniques plays an important role in adapting these parameters to the prevailing network conditions. In this chapter, we considered three variants of the optimization problem, with increasing complexity:
1. When each destination connects to the network at a single location, the optimization problem consists of setting the link weights that drive how the routers direct traffic on shortest paths. The inputs to the optimization problem are the traffic matrix and the capacitated network topology.
2. When some destinations are reachable via multiple egress points, the optimization problem becomes more complicated. Instead of the traffic matrix, the offered load is represented as a set of traffic demands the volume of traffic entering at a certain router and traveling to a particular destination. The optimization problem must also consider the set of egress points for each destination prefix.