Computer network experiment: RIP routing protocol configuration

foreword

A computer network refers to a system in which multiple computers are interconnected through communication equipment and communication lines to exchange information. A router in a computer network is a dedicated network device, which is responsible for selecting the best transmission path according to the destination address, and forwarding the data packet to the next hop. Routers need to run routing protocols to obtain and maintain routing information. RIP (Routing Information Protocol) is an interior gateway protocol based on the distance vector algorithm. It uses the hop count as the metric and sends a routing update packet every 30 seconds. The maximum hop count is 15. This experiment aims to let students understand the working principle and configuration method of RIP routing protocol, and master the skills of using RIP to realize network interconnection.

Purpose

Master the configuration of RIP routing protocol.

Experimental content

(1) Familiar with the RIP protocol;
(2) Connect two 1941 routers to two PCs respectively, configure the RIP protocol on the routers, and test the connectivity.

Related knowledge points

Experimental background
 The school has two campuses, East and West, and each campus is an independent local area network. In order to enable the two campuses to communicate with each other and share resources normally, the exit of each campus is connected by a router, and the school is connected between the two routers. A dedicated line was set up for connection. In order to simplify the management and maintenance of the network management, the school decided to use the RIP protocol to realize the routing intercommunication between the two campuses.

Laboratory equipment

Router_1941 2 sets; PC 2 sets; 3 crossover lines.

experiment procedure

Draw topology diagram

Set ip address, default gateway, subnet mask
PC1
IP: 192.168.1.1
Submark: 255.255.255.0 Gateway
: 192.168.1.254
PC2
IP: 192.168.2.1 Submark: 255.255.255.0 Gateway: 192.168.2.254 Configure Router R1 (basic configuration)

	config  t
hostname  R1
interface gigabitEthernet  0/0
ip 	address	192.168.1.254  255.255.255.0
no  shutdown
exit

Test pc1, R1 connectivity
PC1: ping 192.168.1.1
Ping 192.168.1.254

Similarly, configure router R2 (basic configuration) and test the connectivity of PC1, R1, R2, and PC2

enable
config  t
hostname  R2
interface gigabitEthernet  0/0
ip 	address	192.168.2.254  255.255.255.0
no  shutdown
exit

Continue to configure routers R1 and R2 (basic configuration)

interface	gigabitEthernet  0/1
ip  address  192.168.3.1  255.255.255.0
no  shutdown
exit

interface	gigabitEthernet  0/1
ip  address  192.168.3.2  255.255.255.0
no  shutdown
exit

Test the connectivity of PC1, R1, R2, and PC2



Continue to configure routers R1 and R2 (RIP protocol-related configuration)

router  rip     //注释：开始配置RIP
network  192.168.1.0   //注释：宣告直连网络
network  192.168.3.0   //注释：宣告直连网络
version  2    //注释： 定义RIP协议版本为 RIP  V2版
no  auto-summary   //注释：关闭路由信息的自动汇总功能

router  rip     //注释：开始配置RIP
network  192.168.3.0   //注释：宣告直连网络
network  192.168.2.0   //注释：宣告直连网络
version  2    //注释： 定义RIP协议版本为 RIP  V2版
no  auto-summary   //注释：关闭路由信息的自动汇总功能

Test the connectivity of PC1, R1, R2, and PC2

Check the routing information of R1 or R2
In the privileged mode: show ip route
to distinguish between directly connected networks and ordinary routes.

Summarize

The purpose of this experiment is to realize the communication between different network segments by configuring the RIP routing protocol. RIP is a distance vector based routing protocol that uses hop count as a metric with a maximum of 15 hops. A RIP router sends a routing update message every 30 seconds to notify neighbor routers of its own routing table information. RIP supports two versions, namely RIPv1 and RIPv2. The main difference between them is that RIPv2 supports subnet mask and authentication mechanism.

In this experiment, we used 2 routers and 2 hosts to form 2 network segments respectively. We configured the RIP protocol on each router and specified the network address to broadcast. We also configured a default gateway and subnet mask on each host. Through the ping command, we verified the connectivity between different network segments. We also used the show ip route command to view the routing table information of each router. Through this experiment, we have deepened the understanding and application of the RIP protocol.