Open shortest path first open shortest path first ospf is an openstandard link state routing protocol. I have tried to cover positives and negatives of both and tried to be as unbiased as possible. Performance comparison of protocols combination based on. On the other hand, bgp protocol uses path vector routing. To accomplish unequalcost load balancing, the variance command is used. Ospf open shortest path first is the most widely used igp interior gateway protocol large enterprise networks. One major difference between the protocols relates to how they operate in the osi model. Rip routing information protocol is one of the oldest routing protocols still in service. I will do my best not to play favorites and instead stick to the facts yes, i do have a preference. Advertise networks in ospf area 0 with specific wildcard mask. Another way to put it is that eigrp with its stub routers and the ability to summarize wherever you want will scale better in a messy topology. Communication technology facilitates provision of such services as file. Same goes with eigrp when you redistribute ospf into eigrp, all the routes from ospf will be carried over to eigrp and advertised through out the autonomous system. Eigrp and ospf comparison reliable dedicated servers.
Oct 04, 2017 difference between rip and ospf october 4, 2017 7 comments a routing protocol describes the rules that must be followed by a router while it interacts with neighboring routers to learn the path and to maintain the network in the routing tables. The route with the lowest fd will be placed in the routing table. Difference between rip and ospf october 4, 2017 7 comments a routing protocol describes the rules that must be followed by a router while it interacts with neighboring routers to learn the path and to maintain the network in the routing tables. Link state routing protocols advertise the state of their links. Unlike eigrp, ospf was always an open standard protocol and is an available option on virtually any modern enterprise network hardware made in the past two decades. Simulationbased comparative study of eigrp and ospf for real. Routing protocol comparison routing protocol comparison v1. Cisco ccna routing and switching scaling networks scan skills assessment eigrp student training exam download pdf file.
Open shortest path first ospf is an openstandard link state routing protocol. This leads to monopoly on internet and that being a beast of its own kind, cannot have only one kind of routers for ever. Neighbor table and topology table are maintained by the eigrp enhanced interior gateway protocol 10. The network command in eigrp uses a classful network as the parameter by default, which means that all interfaces inside the classful network will participate in the eigrp process. Nov 21, 2017 eigrp it is a cisco standard routing protocol now open standard protocol from 20 it supports maximum 255 routers in the network.
This means that it can be implemented on any platform, from any vendor or manufacturer. We can enable eigrp only for specific networks using wildcard masks. Feb 26, 2010 eigrp is a classless, distance vector routing protocol with features found in linkstate routing protocols. Why would someone prefer ospf when eigrp is a perfectly fine. Comparative study of enhanced interior gateway routing protocol eigrp and open shortest path first ospf for data transmission through a network system for real time application. Redistribution between cisco eigrp into ospf and vice. Pdf evaluation of ospf and eigrp routing protocols for ipv6. Eigrp, ospf and rip are the dynamic routing protocols being used in the practical networks to propagate network topology information to the neighboring routers 2. Understand ospf vs eigrp vs static route comparison.
Eigrp supports cidr and vlsm, allowing network designers to maximize address space. This lecture has downloadable compressed folder which has labs which includes gns3 project files, pdf files and router configurations. The main alternative to eigrp for most campus lan routing deployments is the open shortest path first ospf dynamic routing protocol. However, this is the only clear advantage of ospf over eigrp. However, ospf speakers will start to form neighbor relationships. Dec 01, 2015 in this post im going to look at the characteristics of ospf and eigrp when used in a dynamic multipoint vpn dmvpn. Research pdf available october 2017 with 1,168 reads. The following outputs are taken from router r4 which shows the neighbors it has formed relationship with. Edsger dijkstras algorithm for producing shortest path tree through a graph.
This can be used and deployed in a variety of networks. This protocol is an evolution of an earlier cisco protocol called igrp, which is now considered obsolete. Difference between eigrp and ospf difference between. Protocols are set of rules and regulations, and routing protocols are used with routers to establish a connection between them. The routing operations performed inside an autonomous system is known as intradomain routing or interior. Meaning an open standard developed by ietf ospf working group for ip rfc1247 current standard is ospfv2 rfc2328 shortest path first. Protocol rip, enhanced interior gateway routing protocol eigrp, open shortest path first ospf, and interior gateway routing protocol igrp are used and compared for testing the performance 9. Eigrp overview eigrp enhanced interior gateway routing protocol is an advanced distance vector routing protocol. Performance analysis of interior gateway routing protocol eigrp.
The following table lists the differences between ospf and eigrp. Ospf open shortest path first ospf is a standardized linkstate routing protocol, designed to scale efficiently to support larger networks. This book provides you with the knowledge to make your migration a success. Ospf is obviously an open standard so its the logical choice if you have multiple vendors. When a link state router begins operating on a network link, information associated with that logical network is added to its local link state database lsdb. Eigrp is denoted by d for internal and dex for external in routing table eigrp is the only protocol that have backu. Comparison of rip, eigrp, ospf, igrp routing protocols in.
It is sometimes referred to as a hybrid routing protocol because it has characteristics of both distancevector and linkstate routing protocols. Eigrp is a cisco proprietary protocol, and ospf is an open standard industry protocol, which can also be used with noncisco devices like juniper. Comparison of routing protocols rip, ospf and eigrp. Eigrp with a feasible successor ospf with modified spflsa throttle timers eigrp without a feasible successor and good design ospf with default timers eigrp without a feasible successor without good design good best. Scalability of the hub routers control plane overall control plane. To that end i will back everything up with data from my lab. This is a classless routing protocol which also assists variablelength subnet masking vlsm and discontiguous networks. Scan skills assessment eigrp student training exam youtube. When redistributing routes from other igps into eigrp you have to keep in mind that you must specify the metric for the redistributed routes which can be done in two ways. It is used to share the information from one router to the.
Redistribution between cisco eigrp into ospf and vice versa example the most common scenario for big enterprise networks with multiple routers is to have a single igp routing protocol igp interior gateway protocol running between the routers in order to distribute all the routing information of the network. Eigrp may allow us to summarize routes anywhere, but in a properly designed network at scale, the ospf areas are in place to allow summarization where it makes sense. This is an advantage over enhanced interior gateway protocol, which is a proprietary standard from cisco. The network number is the number of the network that is advertised by this mlseries card. Ospf and eigrp in order to compare their attributes and performance. The major difference between ospf and bgp is that the ospf is an intradomain routing protocol while bgp is the interdomain routing protocol. Since the ad of ospf is changed to high values, at this stage, ospf will not replace eigrp. Comparison of rip, ospf and eigrp routing protocols based. Therefore a comparison of ospfv3 and eigrpv6 will be conducted using dedicated cisco hardware. A comparison of ospfv3 and eigrpv6 in a small ipv6 enterprise. Pdf comparative study of enhanced interior gateway. Which routing protocol is better, if we compare eigrp and ospf. Dec 03, 2014 today i am going to write about difference between eigrp and ospf, one of the questions which i have seen which asked in ccna, ccnp interview. Difference between ospf and bgp with comparison chart.
Comparison of rip, ospf and eigrp routing protocols based on. Eigrp enhanced interior gateway routing protocol is an advanced distance vector routing protocol. All the routes that are redistributed will have that default metric. A wealth of papers have compared ospf and eigrp in terms of converge times and resource usage, however few papers have assessed the performance of each when implementing their respective security mechanisms.
Eigrp supports classless routing and vlsm, route summarization, incremental updates, load balacing and many other useful features. Any router manufacturer can implement ospf into its products, and most of them have. Open shortest path first ospf open shortest path first ospf. Routes with equal feasible distance are installed by default in the. Convergence time is a key factor in determining performance of routing protocols and routing protocol is one of the significant factor in determining the quality of ip communication. Performance analysis of enhanced interior gateway routing. Performance analysis of rip, eigrp, and ospf using opnet.
Jul 27, 2015 because eigrp works only on cisco and is its proprietary. Ospf ccna pdf this note contains details about how the protocol forms adjacency, exchange lsas, and everything you need to know about ospf. Eigrp and open shortest path first ospf are considered as the preeminent routing protocols for realtime applications. Isis is a native layer 3 network layer protocol, so it is capable of passing routing information for any routable protocol, and it is not restricted to ip like ospf and many other routing protocols are. Feasible distance fd the local routers metric of the best route to reach a specific network. Sep 05, 2009 the pros and cons of ospf and eigrp open shortest path first ospf is an interior gateway routing protocol developed for ip networks based on the shortest path first or linkstate algorithm originated by edgars djikstra. Eigrp and ospf routing protocols for real time applications including video. I wanted to use eigrp and stub routers but cisco mentioned that more resources were being spent on bgp ospf interoperability vs eigrp ospf interoperability so i went bgp on that basis. Pdf performance evaluation of eigrp and ospf routing. The metric is calculated using the metric reported by the neighbor the advertised distance plus the metric to the neighbor reporting the route. The pros and cons of ospf and eigrp open shortest path first ospf is an interior gateway routing protocol developed for ip networks based on the shortest path first or linkstate algorithm originated by edgars djikstra. Difference between eigrp and ospf compare the difference. It is loosely based on the original concept of igrp interior gateway routing protocol.
Dear all, what is the concept behind introducing a. One of the most asked questions after completion of cisco training like ccna or ccnp routing and switching is which protocol is better eigrp or ospf. Eigrp uses a flat network without areas, this can both be an advantage and disadvantage. Ospf will form neighbor relationships with adjacent routers in the same area. Hop count is the metric that rip uses and the hop limit limits the network size that rip can support. Jul 14, 2015 the open shortest path first protocol is an open standard. Cisco has not made the functionality of stub routers or the integration with dmvpn part of their open eigrp standard, so this is still proprietary. Redistribution between cisco eigrp into ospf and vice versa. It is link state routing protocol means in ospf every router has topological information in the form of lsas. The ietf established ospf as the standard for interior routing.
How can i batch rename windows files where the % is a delimiter. Difference between rip and ospf with comparison chart. The process id identifies a unique ospf router process. Convergence time is therefore very essential to a network and. Eigrp and open shortest path first ospf are the highly valuable protocols in the computer. Eigrp and ospf comparison reliable dedicated servers vps. With this eigrp config, we will see important eigrp commands on cisco packet tracer. Eigrp and open shortest path first ospf are the highly valuable protocols in the computer networking field. Eigrp enhanced interior gateway routing protocol, is a cisco proprietary hybrid routing protocol. The merger posted by dariotigani on 20122011 in this update i will explore how to merge an existing ospf network with an existing eigrp network and also touch on some other subjects which you can read about in the objectives below. The configuration of eigrp is similar to other routing protocols. How to migrate from eigrp to ospf scaling of either eigrp or ospf is a matter of proper design. Each is better than the other under certain conditions, either will fail bigtime if used in a network which is not designed to avoid their weaknesses.
Eigrp is also less confusing than ospf because it does not have different network types and eigrp is easier to deploy in hub and spoke scenarios. Comparing dynamic routing protocols network computing. Ospf is based on the shortest path first spf algorithm which is used to calculate the shortest path to each node. Specify default metric for all the routes and issue redistribution command. Eigrp and ospf are routing protocols used to advertise about routes in a network. Wendells ccna skills blog wendells ccna skills blog. Ospf ccna pdf ospf ccna pdf ospf ccna pdf download.
The open shortest path first protocol is an open standard. In the event of a network failure eigrp remembers available backup routes and falls over almost immediately, where as ospf needs to rerun the spf algorithm to find any backup routes which results in extra processor cycles. Migrating eigrp to ospf changing the interior gateway protocol igp on a production network might seem like a daunting task but good preplanning and a methodical implementation plan lets it go smoothly and without incident. Ospf knows all the network topology like gps system knows all the paths. In order to evaluate ospf and eigrps performance, three network models were designed. So first you should know the basics after that the main answer will come. Ip routingconfiguring rip, ospf, bgp, and pbr ftp directory. After reading this post you should be able to describe the pros and cons of ospf and eigrp in the three areas listed above and incorporate this knowlege into a dmvpn design. On the performance comparison of rip, ospf, isis and eigrp. Eigrp stands for enhanced interior gateway routing protocol. No, the enhanced interior gateway routing protocol eigrp developed by cisco is not an open standard. You can set up your router to load balance over links with different metric to reach a destination. However, unlike rip or ospf, eigrp is a proprietary protocol developed by cisco and only runs on cisco routers.
Mutual route redistribution is a common remedy when companies acquire other companies that use different routing protocols. Evaluation of ospf and eigrp routing protocols for ipv6 ijfcc. Ospf adheres to the following link state characteristics. Ospf employs a hierarchical network design using areas. Feb 25, 2015 in general, to ideally select routes between any two nodes on a computer network and disseminate information. Literature survey performance analysis of wireless local area network wlan was performed by using opnet. Enhanced interior gateway routing protocol also known as eigrp is a proprietary routing protocol developed by cisco. The pros and cons of ospf and eigrp all things binary. Also, notice that there are no ospf routes in the routing table. Eigrp enhanced interior gateway protocol designed by cisco system which can be used only in cisco routers, but in 20 it became open source, so it can be used in other routers 5 7. Performance evaluation of eigrp and ospf routing protocols in real time applications. This paper takes into consideration four of such routing protocols rip, ospf, isis and eigrp, expresses them and analyzes their way of operation. Eigrp support equal and unequal cost load balancing equal cost load balancing is enabled by default.
Eigrp is a routing protocol that is proprietary to cisco. Eigrp enhanced interior gateway routing protocol is ciscos proprietary routing protocol based on. It is a advance distance vector routing protcol therefore it also do rouing by rumour. Pdf performance analysis of rip, eigrp, and ospf using opnet. A comparative analysis of cpu utilization using opnet muhammad kashif hanif, ramzan taliby, nafees ayubz, muhammad umer sarwarx, and sami ullahdepartment of computer science, government college university, faisalabad, pakistan abstractrouting is dif.
One of the advantages of eigrp is that, unlike ospf and many other routing protocols, eigrp also supports unequalcost load balancing. Pdf ipv4 addressing space has almost been exhausted. Unequal load balancing means if you have two paths going to the same destination with different cost you can also use the highcost way. Eigrp is a ciscoproprietary routing protocol that is based on igrp.