Dec 03, 2014 administrative distance internal 90 external 170 external routes when the routes redistributed in eigrp it shows ad value 170 in routing table eigrp is now an open standard, cisco made it open standard in year 20. Cisco nsf is supported by the bgp, eigrp, ospf, and isis protocols for routing and by cisco express. Sep 11, 2015 basics of routing static routingdynamic routing classification of dynamic routing administrative distance and metric link state routing and distance. People use several other companies ans they have their own implemen. Sep 04, 2017 this video explains aspects about ospf and eigrp routing protocols. However, ospf speakers will start to form neighbor relationships.
Eigrp has the fastest router convergence among the three protocols we are testing. If no rid use the loopback with the highest configured ip address upup. Difference between eigrp and ospf difference between. Enhanced interior gateway routing protocol eigrp and open shortest path first.
This router is the junction between the two networks and runs both ospf and eigrp. Scalability of the hub routers control plane overall control plane. Email download and upload response time and db query response. 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 enhanced interior gateway routing protocol, is a cisco proprietary hybrid routing protocol. It is loosely based on the original concept of igrp interior gateway routing protocol. Among different routing protocols, eigrp and ospf have been considered as the preeminent routing protocols for the realtime applications.
Jul 14, 2015 the open shortest path first protocol is an open standard. The ospf is based on the link state routing where each router sends the state of the neighbour router to every router present in the area. The rip is a distance vector protocol whereas the ospf is a link state protocol. Ospf is based on the shortest path first spf algorithm which is used to calculate the shortest path to each node. In this protocol a router shares routes with other router in. In every 30 seconds, it delivers an entire routing table to all active interfaces. Difference between ospf and bgp with comparison chart. The major difference between ospf and bgp is that the ospf is an intradomain routing protocol while bgp is the interdomain routing protocol. Eigrp it is a cisco standard routing protocol now open standard protocol from 20 it supports maximum 255 routers in the network. Only incremental update will send, reducing the workload on the router and transmit data which is needed. Mar 05, 2018 the ospf is an interior gateway routing protocol while bgp is an exterior gateway routing protocol. Comparison of rip, ospf and eigrp routing protocols based.
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. I wanted to use eigrp and stub routers but cisco mentioned that more resources were being spent on bgpospf interoperability vs eigrpospf interoperability so i went bgp on that basis. Distance and metric link state routing and distance vector routing routing information protocol rip enhanced interior gateway routing protocol eigrp open shortest path first ospf. Ospf will form neighbor relationships with adjacent routers in the same area.
However, we have not configured redistribution yet. It has several enhancements to scale the enterprise size network. Migrating from eigrp to ospf it organizations that want to migrate from eigrp to ospf have three options. Ospf open shortest path first ospf is a standardized linkstate routing protocol, designed to scale efficiently to support larger networks. This paper examines how ospf works and how it can be used to design and build large and complicated networks. Since the ad of ospf is changed to high values, at this stage, ospf will not replace eigrp. Comparison of rip, eigrp, ospf, igrp routing protocols in. Routing protocols rip, ospf, bgp interior and exterior routing rip ospf. Administrative distance internal 90 external 170 external routes when the routes redistributed in eigrp it shows ad value 170 in routing table eigrp is now an open standard, cisco made it open standard in year 20. Eigrp, much like ospf, builds three separate tables. Thus, to help you select the most appropriate routing protocol for. Neighbor table and topology table are maintained by the eigrp enhanced interior gateway protocol 10. How cisco it simplified network growth with eigrp pdf 224 kb.
Ospf employs a hierarchical network design using areas. This means that it can be implemented on any platform, from any vendor or manufacturer. Enhanced interior gateway routing protocoleigrp is a cisco propriety distance vector routing protocol. Comparison of routing protocols eigrp ospf bgp with. On the performance comparison of rip, ospf, isis and eigrp routing protocols vasos hadjioannou department of computer science university of nicosia nicosia, cyprus email. The connectivity related information will pass between router. In this example, we will configure eigrp on packet tracer. On the other hand, bgp protocol uses path vector routing. Comparison of eigrpisis and ospf isis, b lekinge institute of technology 2009. Eigrp and ospf comparison reliable dedicated servers.
Three protocols eigrp, ospf and bgp are used in this topology and then configured route redistribution on these routers. Watch the replay and download the slides and read the white paper. The rip and ospf are the igp that routing information within an autonomous system, and rip vs ospf differs in many aspects. Service provider support ospf if a very good protocol to use on wan compared to eigrp, the reason for this is that most of the service provider supports it. Difference between rip and ospf with comparison chart. Mutual route redistribution is a common remedy when companies acquire other companies that use different routing protocols. Eigrp stands for enhanced interior gateway routing protocol. Therefore, its routing table contains the routes from both networks. Among many routing protocols, rip, eigrp, and ospf have. Currently we are running bgp loopbacks within our core and bgp on our mpls network. Ospf and eigrp in order to compare their attributes and performance. Enhanced interior gateway routing protocol also known as eigrp is a proprietary routing protocol developed by cisco.
Home downloads download cisco ccnp routing pdf study guide. To that end i will back everything up with data from my lab. Hop count is the only metrics to describe the best path to a remote network, but it can be 15 at max. Eigrp enhanced interior gateway routing protocol is ciscos proprietary routing protocol based on. Feb 25, 2015 nowadays, routing protocols have become a crucial part of the modern communication networks. Technology ip ip routing sample configuration for authentication in ospf configure. Integrateda new network buildout combined with a protocol migration. Sep 05, 2009 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. Enhanced interior gateway routing protocol eigrp is a cisco propriety distance vector routing protocol. If no loopback use the interface with the highest configured ip address upup. Routing information protocol is the straight implementation of distance vector routing for local networks. Eigrp enhanced interior gateway routing protocol is ciscos proprietary routing protocol based on diffusing update algorithm. Redistribution between cisco eigrp into ospf and vice. Nowadays, routing protocols have become a crucial part of the modern communication networks.
Now is as good a time to clarify the comparison of routing protocols eigrp, ospf and bgp. Different types of data traffic are generated and passed through the network in order to analyze network convergence, throughput and packet delay by the use of software wire shark network analyzer and debug command. Qualitative analysis and performance evaluation of rip, igrp. This time well take a look at redistribution between eigrp and rip. This is an advantage over enhanced interior gateway protocol, which is a proprietary standard from cisco. Open shortest path first ospf was developed by the internet engineering task force ietf as a replacement to overcome the shortcomings of rip in rfc 2328. D eigrp, ex eigrp external, o ospf, ia ospf inter area n1 ospf nssa external type 1, n2 ospf nssa external type 2 e1 ospf external type 1, e2 ospf external type 2 i isis, su isis summary, l1 isis level1, l2 isis level2 ia isis inter area, candidate default, u peruser static route.
On the other hand, bgp is based on path vector routing where a router has a list of networks that can be. In this post im going to look at the characteristics of ospf and eigrp when used in a dynamic multipoint vpn dmvpn. 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. The open shortest path first ospf protocol, defined in rfc 2328, is an interior gateway protocol used to distribute routing information within a single autonomous system. Also, notice that there are no ospf routes in the routing table. 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. Pdf performance evaluation of eigrp and ospf routing. Spf only depends on bandwidth for metric calculation spf bases on bandwidth to calculate the cost of a particular link, the shortest. Cisco ospf vs eigrp difeerence between ospf and eigrp. It is a ciscoproprietary routing protocol for tcpip. Cisco enhanced interior gateway routing protocol eigrp provides easy deployment and fast. Follow published on sep 11, 2015 basics of routing.
Pdf evaluation of ospf and eigrp routing protocols for ipv6. The primary purpose of routers is to forward the internet protocol ip packets. On the performance comparison of rip, ospf, isis and. In previous lessons i explained the basics of redistribution and i also showed you how to configure redistribution between ospf and rip. Djikstra states that ospfs metric is cost on cisco routers. Eigrp adheres to the following hybrid characteristics.
Pdf routing protocols are key elements of modern communication. This paper consist of comparisons of ospf, igrp and rip with eigrp, also there are problems with redistributing routes between rip,ospf or. Comparison of rip, ospf and eigrp routing protocols based on. Eigrp uses bandwidth and delay of the line, by default, to calculate. The configuration of eigrp is similar to other routing protocols. Ospf open shortest path first is the most widely used igp interior gateway protocol large enterprise networks. Like eigrp, ospf supports vlsm and authentication and utilizes ip multicast when sending and receiving updates on multiaccess networks, such as ethernet. It is a advance distance vector routing protcol therefore it also do rouing by rumour. It prevents routing loops, through restricting the number of. It is link state routing protocol means in ospf every router has topological information in the form of lsas.
With this eigrp config, we will see important eigrp commands on cisco packet tracer. Comparison of routing protocols eigrp ospf bgp with diagram. Evaluation of ospf and eigrp routing protocols for ipv6. Eigrp is used to converge the loopbacks within the core. Monitoring and maintaining the eigrp autonomous system configuration 40. Why would someone prefer ospf when eigrp is a perfectly. Eigrp and ospf comparison reliable dedicated servers vps. Only feature that i can recall that eigrp has which ospf doesnt, is support for load balancing across links of different speeds.
The open shortest path first protocol is an open standard. However, this is the only clear advantage of ospf over eigrp. 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. This leads to monopoly on internet and that being a beast of its own kind, cannot have only one kind of routers for ever. There any many things which are in the basics of eigrp. Enhanced interior gateway routing protocol eigrp and open shortest path first ospf are the highly valuable. When i think about all this stuff, in my opinion, its better to run ospf compared to eigrp because it is one of the most popular igp interior gateway protocol around the world. Ospf adheres to the following link state characteristics. All routing protocols have their strengths and weaknesses. The main difference between ospf and rip is that rip only keeps track of the closest router for each destination address, while ospf keeps track of a complete topological database of all connections in the local network. Eigrp supports a hopcount of 255 routers 100 by default, as its only an advanced distance vector routing protocol. A routing protocols responsibility lies in determining the way routers communicate with each other in order to forward any kind of packets, from a source to a destination, using the optimal path that would provide the most efficiency. Enhanced interior gateway routing protocol eigrp cisco.
Unlike the cisco proprietary protocol eigrp which was developed by cisco to replace ripv2, ospf is vendor independent and is the most used routing protocol. 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 approach is suited for those who are adding osfp devices to a network and will migrate existing devices from eigrp to ospf. 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. To locate and download mibs for selected platforms. Ospf fundamentals unlike eigrp, which can support multiple network layer protocols, ospf can only support the internet protocol ip, specifically ipv4 and ipv6. The major difference between these two algorithms lies in how they calculate the shortest routing path. Its more about the choice between eigrp and ospf, the title of the question doesnt ask for what protocol to use but asks for a comparison of ospf vs eigrp and the benefits of each protocols. Distance vector routing protocol is based on bellman ford algorithm and ford. Eigrp is denoted by d for internal and dex for external in routing table eigrp is the only protocol that have backu. Because eigrp works only on cisco and is its proprietary. In this protocol a router shares routes with other router in the same autonomous system. Eigrp uses diffusing update algorithm dual to determine the best path among all feasible paths.
This video explains aspects about ospf and eigrp routing protocols. Eigrp enhanced interior gateway routing protocol eigrp is a ciscoproprietary hybrid routing protocol, incorporating features of both distancevector and linkstate routing protocols. Routing protocol authentication rip, ospf, eigrp and bgp. Jan 19, 20 comparison of routing protocols eigrp ospf bgp with diagram 6.
I have been advised by a coworker that bgp should not be in the core and we should use eigrp in the core and redistribute eigrp core into bgpmpls and visa v. The pros and cons of ospf and eigrp all things binary. 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. Among all the three chosen samples, ospf is the most widely used routing protocol in large enterprise networks. The routing operations performed inside an autonomous system is known as intradomain routing or interior. I will do my best not to play favorites and instead stick to the facts yes, i do have a preference. This video will help you compare both the protocols. The following outputs are taken from router r4 which shows the neighbors it has formed relationship with.
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