Configure and verify eigrp eigrp is a progressed separation vector routing protocol that is utilized on a machine system to help mechanize routing choices and design. Lets take a look to figure below and configure this topology via eigrp step by step. It is the enhanced distance vector protocol, which relies on a diffused update algorithm to determine the shortest path to the destination within the network. Where we really see the major difference is in regards to the configuration.
C connected, s static, i igrp, r rip, m mobile, b bgp 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, e egp i isis, l1 isis level1, l2 isis level2, ia isis inter area candidate default, u per. Eigrp uses diffusing update algorithm dual to determine the best path among all feasible paths. The eigrpv6 is enabled per interface level with this command. Step by step eigrp configuration example networkel. Eigrp loopfree alternate lfa fast reroute frr is a feature that allows eigrp to switch to a backup path in less than 50 ms. Fast reroute means we switch to another next hop, loopfree alternate is an alternative path in the network that is loop free. And lets ensure that hq has the ability to route to the 10. Is the passiveinterface command inappropriately configured, thus preventing eigrp hello packets on the interface. Alright lets take a look first at what that one is. Basic cisco router eigrp configuration select the contributor at the end of the page this article is the third in a series of articles covering the basics of cisco networking. Eigrp configuration with example stepbystep icnd2 200105.
The following six keywords can be used with the eigrp stub command to modify this behavior. This tutorial explains how to configure eigrp routing protocol in cisco routers step by step with practical example in packet tracer. To configure eigrp only on interface fa00, the network 10. Eigrp configuration is really awesome and not so hard if you compare with ospf or etc. The network statement describes a list of interfaces.
The following example configures an ipv 4 addressfamily session for the vrf named red in cisco ios. See the bgp neighbor configuration examples section at the end of this chapter for an example of configuring bgp neighbors. In eigrp named configuration, eigrp vpns can be configured in. Its time for the exciting part of our enhanced interior gateway routing protocol, or eigrp, discussion, configuration. The manual summarization is a process of creating a summary route that will be used to represent multiple routes and can be used to reduce the sizes of routing tables in a network. Eigrp, the big change here is eigrp named mode its the same eigrp with a new shiny cover. In this configuration, eigrp vpns can be configur ed in ipv4 and ipv6 named configurations. Gns3 labs for ccna eigrp configuration and verification.
This enables the eigrp routing protocol on autonomous system number asn 10. In this example, two routers r1 and r2 are configured with ipv6 address. An autonomous system number that is the same on all network routers must be entered. To configure a basic eigrp network between two routers, only the following two commands are required on each router, as a minimal configuration.
Ipv6 eigrp configuration example stepbystep icnd2 200105. The below section will describe you how to configure and verify the eigrp for ipv6. Any router that wants to become a neighbor with r1 and share routes must. To enable eigrp on r1 we go into global configuration mode and type in. Information about configuring eigrp eigrp features increasednetworkwidthwithiproutinginformationprotocolrip,thelargestpossiblewidthof yournetworkis15hops. The maximum hold time should not exceed 7 times the eigrp hello timers, or 35 seconds. Purpose command or action configures an eigrp routing process and enters router configuration mode. Once this has been entered, we have told the router port to only accept eigrp packets which are tagged in a similar fashion. Enhanced interior gateway routing protocol eigrp is a powerful distance vector routing protocol and is relatively easy to configure for basic networks.
Eigrp for ip is a concise, complete, and practical guide to understanding and working with eigrp. This chapter discusses common eigrp configuration tasks. A maximum of 30 eigrp routing processes can be configured. Configure r3 to redistribute eigrp routes into rip using a hop count of 3 then redistribute rip routes into eigrp using a t1 bandwidth and 20,000 microsecond delay. Were going to be covering the ccna exam configuration commands and show commands so we can see what weve actually configured as well as some trouble shooting of eigrp. This article is mainly concentrated on configuration of rip and eigrp together to get the above mentioned benefits.
Configuring the enhanced interior gateway routing protocol variablelength subnet masking vlsm support eigrp is a classless routing protocol, which means that it advertises a subnet mask for each destination network. The specific number chosen does not matter, as long as a. Ccna lab manual router infotech, confidential document only for internal circulation page 3 procedure. Eigrp message authentication configuration example cisco. Eigrp enhanced interior gateway routing protocol eigrp is a ciscoproprietary hybrid routing protocol, incorporating features of both distancevector and linkstate routing protocols. To begin the eigrp for ipv6 routing configuration process, issue the ipv6 router eigrp 1 command, where 1 is the as number. Enable the eigrp protocol on both routers so that hosts on the both routers can. Lets setup eigrp on our branch router and our hq router. Gateway routing protocol eigrp is an example of a balanced hybrid routing protocol.
This document illustrates how to add message authentication to your enhanced interior gateway routing protocol eigrp routers and protect. Configuring gre gre configuration guide 6 599731 to create a new gre tunnel configuration using the web gui, select tunnels from the menu list located on the left side of the screen and click add new tunnel to activate the tunnel configuration screen. Eigrp is activated on a router by entering configuration mode and the eigrp command. This command is executed in eigrp configuration mode to statically specify an eigrp neighbor. After overview of eigrp, it is time to take a look at eigrp configuration. The protocol was composed by cisco systems as an exclusive protocol, accessible just on cisco switches, yet cisco changed over it to an open standard in 20. An eigrp named configuration does not create an eigrp routing instance by itself. Once you are in the router eigrp configuration submode, configure the classful network 172.
Now, we are dropped into router configuration mode, with a new set of configuration. Loopback addresses are assigned in both routers, and they are configured to be in eigrp1. Enter the ip address and subnet mask for the tunnel. Unlike eigrp automatic summarization, eigrp manual route summarization is configured and implemented at the interface level using the ip summaryaddress eigrp asn network mask distance leakmap interface configuration command. Generic routing encapsulation gre configuration guide. Eigrp configuration example this video will walk you through a basic eigrp configuration. Eigrp, unlike some other routing protocols such as ospf, supports the manual summarization on any router within a network. By default, an eigrp summary address is assigned a default administrative distance value of 5. Configure the network above with eigrp using autonomous system number 90. Eigrp named configuration is a base configuration that is required to define addressfamily configurations under it that are used for routing. The manual summarization in eigrp is configured on the per. And, lets go ahead and take out,already, the eigrp we have in here. This command is executed in eigrp router configuration mode to specify which interfaces participate in the eigrp routing process. To start the new named mode configuration we need to define the named instance compared to defining the autonomous system out of the gate.
It focuses on eigrp in the context of ip, although the principles learned from this guide can be applied to the other major network protocols that eigrp supports, including ipx and appletalk. Configuring mutual eigrp and rip redistribution free. How are debug commands used to troubleshoot an ospf configuration. The number you see is the autonomous system number and it. In this lab, you will configure eigrp for the topology and networks shown above. Explain how eigrp discovers, chooses, and maintains routes.
Basic cisco router eigrp configuration pluralsight. Eigrp is a very popular routing protocol selection for those. Use the router eigrp command in global configuration mode to enable eigrp on the r1 router. Your eigrp configuration is now more secure than before. Eigrp adheres to the following hybrid characteristics. First, you need to start eigrp with the ipv6 router eigrp command. Depending on the model and cisco ios version, the commands available and output produced might vary from what is shown in the labs. So lets go ahead and open the first router,which is labeled router 0.
This command uses the network id of the subnet and a wildcard mask to identify the network range. Comparison of rip, ospf and eigrp routing protocols based. Eigrp chapter description the excerpt from the ccna routing and switching portable command guide summarizes all ccna certificationlevel cisco ios software commands, keywords, command arguments, and associated prompts for topics related to the enhanced interior gateway routing protocol eigrp. Ip routing eigrp configuration guide cisco ios xe release. A device that is configured as a stub with the eigrp stub command shares connected and summary routing information with all neighbor devices by default. Dual example start e eigrp fd ad topology a 3 fd via d 3 2 successor via c 4 3 d eigrp fd ad topology a 2 fd via b 2 1 successor via c 5 3 c eigrp fd ad topology. Eigrp is enhanced interior gateway routing protocol, a cisco proprietary protocol, meaning it will work on cisco routers but nothing else. Now see the benefits of using this type of routing configuration. Understanding the network statement in igp configuration. Enter a process id of 1 for the autonomoussystem parameter. The configuration for r1 is displayed below as an example. Eigrp and troubleshooting routing protocols objectives.
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