Configuring mp bgp page 6 r1 r2 ipv6 lan 1 ipv4 bgp session advertise ipv6 lan 1 192. Recorded videos provided after the class free classes. C connected, s static, i igrp, r rip, m mobile, b bgp d eigrp, ex eigrp external, o ospf, ia. Lab settings the information in table 1 provides the credentials to access client1 machine. Watch the router logs with the bgp session neighbour changes being logged, any mismatch in the password should be easy to spot. Understanding redistribution of ospf routes into bgp. May 26, 2011 we are only running ospf within as200 and we are not redistributing bgp information into ospf. Attend first 2 free class and then pay if you decide to enroll. For this tutorial we will be using the second option, so go int the ospf process and enter mpls ldp autoconfig this will enable mpls label. This configuration is a new configuration of router b that redistributes only the intra. Participants will finish bgp configuration to set up neighbours with both transit and ixp. The following will be the common topology and ip address plan used for the labs. Two cisco routers with one serial port two cisco routers with two serial ports cisco ios 12.
Configuring advanced bgp lab continued bgp objectives. In order to run mpls you need to enable it, there are two ways to do this. Jun 11, 2019 this ospf lab is created in packet tracer and you will learn the ospf single area configuration from this lab. Ospf is an interior gateway routing protocol in which the routing operation is performed inside an autonomous system. The bgp session established between router r1 and router r2 is done using ipv6. Ospf is designated by the internet engineering task force ietf as one of several interior gateway protocols igps. Rip and ospf o exterior routing n routing between autonomous systems n only one exterior routing protocol is usually used for exterior routing n examples. Building core networks with ospf, isis, bgp and mpls.
On ce devices redistribute igp into bgp and vice versa to receive the required routes and. Ospf is based on the shortest path first spf algorithm, which is used to calculate the shortest path for each node. The major difference between ospf and bgp is that the ospf is an intradomain routing protocol while bgp is the interdomain routing protocol. Bgp and ospf routing redistribution lab defaultinformation. Under the ospf process use the mpls ldp autoconfig command. Isp workshop lab 1 module 1a basic topology and ospf objective.
This command displays the lists of information related to the. All bgp devices must use their interface loopback0 as their bgp routerid 2. Redistribution of bgp into ospf can melt the network down. Redistributed routes are assigned a metric of 20 by default. Ospf configuration in packet tracer lab with pdf networking. There is interesting thing that i redistribute on r2 bgp to eigrp and vice virsa. Deployed many bgp and ospf networks based on mikrotik.
Bgp pdf created with fineprint pdffactory pro trial version. Apnic ipv6routing workshop lab huawei vrp 1 apnic v1. Intermediate routing concept ospf isis, bgp, cisco router cli, telnetssh software etc. The main difference between ospf and bgp is that ospf is an intradomain routing protocol using link state routing, and the routing operation is performed inside an autonomous system while bgp is the interdomain routing protocol that uses path vector routing, with the routing operations performed between two autonomous systems. Configuration at other ases will be similar at as100.
I will show you how to configure bgp routing protocols on cisco router using three router. Ospf with three routers the physical topology is as shown in fig 18. Introduction to bgp page 5 as a routing domain, where all networked systems operate common routing protocols and are under the control of a single administration1. This is a basic labs regarding ospf single area configure related to ccna or icnd12 exam. In this presentation, i will do a presentation about the differences between 2 famous routing prot. Ccnp route lab manual with solutions config router. You can alternatively use your own physical lab if you have one by cabling it as shown in the lab topology diagram for each exercise.
In questo video viene illustrato lo schema funzionale del lab realizzato con 3 mikrotik hex lite rb750 in aggiunta al router di accesso alla rete principal. In this lab, bgp will be configured as the exterior gateway protocol egp and open shortest path first ospf as the interior gateway protocol igp. Objectives by the end of this lab, students should be able to. Configure the ip addresses on the routers using the following 192. All the workshop lab routers are configured with required basic, interface, ospf isis and ibgp configuration according to the topology diagram below. Ospf is an open standard protocol, you learn more why we use ospf and ospf quiz from here. Ospf to bgp, bgp to ospf redistribution part 1 youtube. Understanding redistribution of ospf routes into bgp cisco. Configure a bgp neighbor relationship between r1, r2 and r3.
Basic bgp lab configuring basic bgp lab basic objectives. Here in this lab i have taken 3 as they are 1,71 and 79 respectively. Topology from one lab in course the labs included in this course are. Isdn, ospf, and bgp solution objective in this case study, you troubleshoot a complex scenario involving isdn, open shortest path first ospf, and border gateway protocol bgp. This command displays the lists of information related to the open shortest path first ospf database for a speci. R1 configuration interface loopback0 ip ospf network pointtopoint. Open shortest path first ospf ospf is a dynamic routing protocol. Interior and exterior routing o interior routing n routing inside an autonomous system n each as can chose its own interior routing protocol n examples. Ccna lab manual router infotech confidential document only.
In this lab, bgp and open shortest path first ospf will be configured as the exterior gateway protocol egp and the interior gateway protocol igp, respectively. This will clear the bgp and ospf configuration ready for the current module. For the ospf ass, place the loopback interfaces in an area other than. Ospf is designated by the internet engineering task force ietf as. Configuring ibgp and ebgp sessions, local preference. Opsf is used for major autonomous system networks which are in preference to the routing information protocol. Router a should see routes for and be able to ping the loopback interface on router c and vice versa. Bgp carries external reachability igp carries only nexthop loopbacks are better for e. Bgp calls each routing domain an autonomous system. Once confirmed by the lab assistant, move on to the next steps.
Ospf detects changes in the topology, such as link failures, and converges on a new loopfree routing structure very quickly. Device interface iipv4 address subnet default gateway router r1 r1eth0 192. Ospfv2 is defined for ipv4 networks, and ospfv3 is defined for ipv6 networks. This is a bgp configuration example lab showing bgp configuration using cisco packet tracer. Externally derived routing information eg bgp, ospf of other as appears as leaves manolis surligas csd, uoc ospf tutorial may 14, 2019 4 15. Enable bgp redistribution to advertise ospf routes. Ccnp route chapter 4 lab 41, redistribution between eigrp. Create a basic physical lab interconnection with one ospf area. Difference between eigrp, ospf vs bgp routing protocols. Areas should be defined as stub when possible to prevent accidental redistribution of ebgp into. Egp, also called interdomain routing protocol, is used for routing between. Feb 19, 2018 in this article i am going to show you how to configure bgp step by step.
Configure and cable the serialethernet interfaces as indicated in the above diagram. The ospf process id is kept locally and has no meaning to other routers on the network. Scale bgp with bgp peer templates and routereflectors. Furthermore, the lab presents full mesh topology used in ibgp. On the other hand, the bgp is an exterior gateway routing protocol which enables the routing operations to be performed between the two. To redistribute the ospf routes into eigrp, on r2 issue the redistribute ospf 1 metric 0 100 255 1 1500 command. By default, synchronization has been disable on huawei routers. In this lab you will configure a complex environment consisting of bgp and ospf. Difference between ospf and bgp with comparison chart. Form ibgp and ebgp neighbor relationships where appropriate. Bgp is a pathvector protocol that exchanges routing.
Ospf open shortest path first is the most widely used protocol in the network of large enterprises. Module 3 ibgp configuration for training lab network. Bgp border gateway protocol is similar to the postal service of the internet. Important ospf interview questions and answers with pdf to. Ospf isis configuration according to the topology diagram below. Ive provided a lab startup file for each exercise which loads in either gns3 or packet tracer so you can get up and running with the labs immediately. Open shortest path first ospf is a linkstate routing protocol for ip networks. In following figure there are the three routers with. Configure and verify ospf in the core network lab 21b.
Knowledge of cisco router cli, previous hands on experience. Configure and verify isis in the core network lab 31. The number following router ospf is a process id and is used inside the router only so it can be any number. The ospf stands for open shortest path first whereas bgp expands to border gateway protocol. All the transit routers in your as run bgp valid reason for our lab case. You will then run basic testing commands to verify all links and protocols are working properly. As part of the exercise, you will need to enable linkstate distribution under ospf, enable the bgp linkstate address family and observe. Feb 28, 2012 command under router bgp to redistribute ospf intra. All the routers are preconfigured with basic interface, ospf and bgp configuration according to the following topology diagram.
Advertising an ipv6 lan address through a bgp ipv4 session. We need to redistribute the ospf routes from r4 into bgp in the vrf on r1, the ospf routes from r6 into mp bgp in the vrf on r3 and then the routes in mp bgp in r1 and r3 back out to ospf. Module 4 ebgp with cpe router for training lab network. But for this lab we recommend the ospf process id be the same as the as number which is the convention used by a number of isps. A download link is provided at the start of each exercise. On the other hand, bgp protocol uses path vector routing. Step 2 configure ldp on all the interfaces in the mpls core. Ensure that all routers, interfaces, cables and connections are working properly. Bgp vs ospf, achmad mardiansyah glc networks, indonesia. However, configure router 1 and router 12 as route reflector servers in their respective ass. Disable the default ipv4 unicast address family for peering session establishment in all bgp routers. Our approach will be to originate a legitimate aggregated prefix i.
Bgp is referred to as external bgp ebgp when it is running between different autonomous systems ases, whereas it is referred to as internal bgp ibgp when it is running within. By the end of this lab, students should be able to. Bgp and ospf redistribution lab default route originate into ospf. Ensure that all bgp updates between peers are sourced from each routers loopback interface. Call the lab assistant and demonstrate the password as set on the ibgp session. On each router, remove the bgp and ospf processes from the previous modules by using the following two commands. Open shortest path first is abbreviated as ospf,which is a router protocol. Using mp bgp, router r1 can advertise the address of the attached. Bgp lab with eigrp ospf redistribute,defualt route hi,i have created topology with bgp ospf and eigrp. All training material will be provided in pdf, cli commands, study material labs. As part of the exercise, you will need to enable linkstate distribution under ospf, enable the bgp. Sp sample lab questions question, configuration and verification 1 isis ipv4ipv6 2 ospf ipv4ipv6 3 bgp unicast ipv4ipv6 4 mpls ldp 5 mpls te 6 mpls te frr 7 mp bgp intraas vpnv4 8 mp bgp interas vpnv4 9 csc 10 mp bgp vpnv6 6vpe 11 multicast vpn 12 atom vpls 14 l2tpv3. Enable ospf redistribution to advertise bgp routes.
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