But you may be starting a new network, or you may have the opportunity to redesign your existing one. We may consider each row in Table 16 as a list of distances from one node to.Many of us work on networks we didn’t have the luxury of designing—with routing protocols we weren’t given the chance to choose. When working with networks, routes can be configured in two ways: staticallyor dynamically.We will examine the two main classes of routing protocols: distance vector. These protocols communicate routing information between networked devices on the network. In a dynamic routing environment, routing protocols such as Routing Information Protocol (RIP)and Open Shortest Path First (OSPF)are used.
Thus, to help you select the most appropriate routing protocol for your network, I am going to examine the pros and cons of the best-known routing protocols and offer some guidance on when it makes sense to use one or the other.List of Figures. Routing Protocols can be divided into different categories according to their purpose and their operation behaviour.While there is often a “right tool for the job,” all routing protocols have their strengths and weaknesses, and I don’t believe that there is a clear-cut best routing protocol that is the right tool for every network. The Routing Protocols that is used for this aim is also called Dynamic Routing Protocols.In this lessons, we will focus on the types of Routing Protocols. Dynamic Routing is the routing process that is done via a Routing Protocols in networking.
Routing updates can require significant bandwidth, as the entire routing table is sent when a link’s status changesMethodology: Selects routers with the lowest hop count updates other routers by multicasting the entire routing table to all routers every 30 secondsIdeal topology: Smaller networks that aren’t very dynamic, have fewer than 15 hops Doesn’t support multiple paths for the same route Doesn’t have knowledge of the bandwidth of a link Converges slowly, especially on large networks So RIP V1 will not work with a network that has been subnetted beyond the normal /8, /16, /24 (255.0.0.0, 255.255.0.0, 255.255.255.0) or Class A, B, and C network boundaries.
Uses the delay, bandwidth, reliability, and load of a link as its metric this makes it very accurate in selecting the proper route Requires little bandwidth for routing updates Requires less CPU than OSPF (see next section) Uses DUAL to provide very quick convergence and a loop-free network
Interior routing protocols are used within a single domain on your interior network. More complex to configure and understand than a distance vector protocolJust to clarify this comparison, one way routing protocols are classified is according to how they are used. Supports a long list of optional features that many of the other protocols do not Recognizes the bandwidth of a link, taking this into account in link selection Routing update packets are small, as the entire routing table is not sent Converges quickly, compared to a distance vector protocol
These include IS-IS, NLSP, RTMP, and IPX RIP.Another type of routing protocol is an exterior routing protocol, or Exterior Gateway Protocol (EGP). Note that I omitted a few of the lesser-known interior routing protocols to keep the discussion reasonably short. The protocols we looked at in this article are all IGPs.
Routing Protocols List How To Deliver Data
I would recommend OSPF or EIGRP for any new network, based on their popularity, flexibility, and fast convergence. This is the routing protocol of the Internet.From talking with administrators who manage a variety of networks, the consensus is that OSPF is becoming the most popular interior routing protocol today. While a variety of IGPs are currently used, about the only EGP in use today is the Border Gateway Protocol (BGP). An EGP doesn’t know how to deliver data within your network, just how to deliver data outside your network.
Network Computing: "Choosing an Interior Gateway Protocol" Cisco Certification: Bridges, Routers, & Switches for CCIEs, by Andrew Bruce Caslow and Val Pavlichenko Cisco Press: Routing TCP/IP Volume II, by Jeff Doyle Cisco Press: Routing TCP/IP Volume I, by Jeff Doyle This article should help you get a better understanding of your options.
Post a comment or a question about this article. TechRepublic: "Administering EIGRP on Cisco Router Networks"What routing protocol does your network currently use?We look forward to getting your input and hearing about your experiences regarding this topic.
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