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Eigrp Routing protocol ppt

Enhanced Interior Gateway Routing Protocols (EIGRP) is a CISCO proprietary Protocol. performance comparison of eigrp/ is-is and ospf/ is-is eigrp protocol ppt
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Published Date:09-03-2017
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A Detail Qualitative Performance Evaluation of Integrated EIGRP/IS-IS and RIP/IS-IS Routing Protocols in Hybrid NetworksAbstract ◎PROBLEM STATEMENT: This Research work presents a simulation based analysis of Routing Information Protocol (RIP), Enhanced Interior Gateway Routing Protocol (EIGRP) and Intermediate System to Intermediate System (IS-IS) protocols. We used the combination of EIGRP&IS-IS, RIP&IS-IS routing protocols on the Hybrid network in order to reveal the advantage of one over the other as well as the robustness of each protocol. With Respect To Several Performance Metrics: ◎ (1) Database Query Response Time ◎ (2) E-mail Download Response Time ◎ (3) HTTP Object Response Time ◎ (4) Throughput Simulation Tool Used: OPNET Modeller 14.5 and 16.0Thesis Aims and Objective 1. Develop and design a simulation model and scenarios for integrated EIGRP/IS-IS and RIP/IS-IS routing protocols in hybrid networks. 2. Perform a simulation on different scenarios and evaluate via different metrics. 3. Analysis of the results in Hybrid environment. 4. Comparative study has been done on the basis of simulation results. 5. Deriving a conclusion on basis of performance evaluation.Open Shortest Path First (RFC 1247) Uses IP, has a value in the IP Header (8 bit protocol field)  Interior routing protocol, its domain is also an autonomous system  Special routers (autonomous system boundary routers) or backbone routers responsible to dissipate information about other AS into the current system.  Divides an AS into areas  Metric based on type of service - Minimum delay (rtt), maximum throughput, reliability, etc..OSPF (type of links) “OSPF (link state advertisement) Network Link Router LinkCharacteristics of OSPF  OSPF provides load balancing by distributing traffic through multiple routes to a given destination .  It allows maximum flexibility and provides transfer and tagging of external routes injected into AS.  It helps exchange information obtained from external sites. Runs directly over IP.  Provides authenticated routing updates using different methods of authentication.  It has low bandwidth utilization and ensures less processing burden on routers because updates are only sent when changes occur.IS-IS (Intermediate System to Intermediate System Routing Protocol) ◎ It is also a link-state routing protocol with several similarities with OSPF protocol, such as the use of the same SPF algorithm. ◎ It was defined by ISO (International Organization for Standardization). ◎ IS-IS is based on the primer OSI (Open System Interconnection) reference model.Simple IS-IS NetworkAdvantages and Drawbacks of IS-IS Advantages ◎ Fast convergence. For transmitting routing information, IS-IS utilizes a low number of packet types. ◎Support large areas of several intermediate systems without degradation of SPF performance. ◎ It does not implement virtual links ◎ Scalable. Backbone is not an area in IS-IS but instead is a collection of contiguous ABRs. ◎Simple to implement. Drawbacks ◎Metrics are 6 bit wide (0-63). Default metric is 10 if it is not manually specified. ◎All areas in IS-IS networks are stub areas which may result in suboptimal routing between areas. ◎All ISs must have identical views of an area. ◎For node identification, NSAP addresses are needed in combination with Connectionless Network Protocol (CLNP) as an additional network layer protocol.EIGRP ◎ Enhanced Interior Gateway Routing Protocols (EIGRP) is a CISCO proprietary Protocol ◎ It is an enhancement of the interior gateway routing protocol (IGRP). ◎ EIGRP was released in 1992 as a more scalable protocol for medium and large scale networks. ◎ It is a widely used interior gateway routing protocol which uses Diffusion Update Algorithm (DUAL) for computation of routes. ◎ EIGRP is also known as hybrid protocol because it has the properties of a link state protocol for creating neighbor relationships and of a distance vector routing protocol for advertisement of routes.Components of EIGRP  Neighbor Discovery/Recovery  Reliable transport protocol (RTP)  Diffusion Update Algorithm (DUAL)  Protocol Dependent Modules (PDM) Advantages and Drawbacks of EIGRP • EIGRP provides the following advantages :- - Loop free routes are provided. - It additionally saves a back up path to reach the destination. - Multiple network layer protocols are supported - Convergence time for EIGRP is low which in turn reduces the bandwidth utilization. - Supports VLSM, discontinuous network and classless routing. - Routing update authentication is supported by EIGRP. - Topology table is maintained instead of the routing table and consist of best path and an addition loop free path. Drawbacks of EIGRP are -It’s a Cisco proprietary routing protocol. - Routers from other vendors cannot utilize EIGRP.Routing Information System (RIP)  RIP is a distance vector routing protocol and uses hop count as it’s metrics for determining best path and also uses UDP (User Datagram Protocols) port for message encapsulation.  Hop count measures the distance travelled by a data packet. The maximum number of hop count is 15, thereby preventing routing loops.  RIP updates its routing table after every 30 seconds.  Each router maintains its routing table by sending periodic updates to communicate with its neighbor routers. RIP uses Bellman-Ford Distance Vector algorithm to determine the best path.  RIP has three versions:- RIPv1 (Routing Information Protocol Version), RIPv2 ( Routing Information Protocol Version 2), RIPNG (Routing Information Protocol Next Generation)Characteristics of Routing Information Protocol (RIP) · RIP is easy and efficient in smaller networks and thus require little management. · RIP is mainly based on hop counts vector. · A fixed subnet mask length is used. · RIP supports IP and IPX routing. · RIP routes have an administrative distance is 120. Advantages of Routing Information Protocol · Easy and efficient in smaller networks. · Easy configuration. · Low resource usage. Disadvantages of Routing Information protocol · Loop creation. · Slow convergence. · Scalability problem. · Lack of metrics.Example of a domain using RIP◎ Literature Review D. Pei et al. show the design and development of a method for detecting RIP routing updates. Specifically, RIP-TP protocol is presented. It uses hop count as routing metric. The authors emphasize its efficiency, simplicity, low operating cost and compatibility with the standard RIP. In order to assess the design efficiency, they show a series of experimental simulations to demonstrate that it is possible the improvement of fault detection in routing protocols. They particularize these evidences with RIP. A. Basu et al., studies the stability of the OSPF protocol under steady state and with interferences. In this study we will see what effects are given by the TE (Traffic Engineering) extensions on the stability of a network when OSPF is running. OSPF TE extensions provide mechanisms for ensuring that all network nodes have a consistent view of the traffic parameters associated with the network. The authors also analyze whether it is possible to accelerate the convergence time of the network, analyzing the Hello packets and the number of route flaps.B. Albrightson et al. They explain that EIGRP is a protocol based on a hybrid routing algorithm, sharing some properties of distance vector and link state algorithms. This protocol is the first Internet protocol that addressed the loop problem. Other aspects which shows are the type of metrics, the transport mechanisms and the methods used to discover the networks, among other features. Ittiphon krinpayorm et al. applied the EIGRP algorithm to an application based on Maude. Maude is a programming language for formal specifications using algebraic terms. It is an interpreted language that allows the verification of properties and transformations on models that can run the model like a prototype. The authors show how to build an infrastructure of processes implemented by Maude, giving the chance to send a message directly to a neighbor or broadcast to all neighbors. EIGRP protocol implements the top of this basic infrastructure. Finally, the global system is tested and analyzed.Simulation Tool Used  This Dissertation work using OPNET Modeler16.0 Network Simulator.  OPNET Modeler16.0 is a Commercial Network Simulator.  Designed for modelling communication devices, technologies, and protocols and to simulate the performance of these technologies.  Figure : OPNET 16.0◎Proposed Methodology