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How to configure a rip routing protocol with a simple toplogy in GNS 3 to check the connectivity between hosts.


Step 1:Create a topology like this and do basic configurations ip address to the router interfaces ,ip address and default gateway to the host same as in topology.




In Router R1,



R1(config)#interface fastethernet 2/0
R1(config-if)#ip address 10.0.0.1 255.0.0.0
R1(config-if)#no shutdown
R1(config-if)#exit


R1(config)#interface serial 1/0
R1(config-if)#ip address 20.0.0.1 255.0.0.0
R1(config-if)#clock rate 64000
R1(config-if)#encapsulation ppp
R1(config-if)#no shutdown
R1(config-if)#exit


In Router R2,



R2(config)#interface serial 1/0
R2(config-if)#ip address 20.0.0.2 255.0.0.0
R2(config-if)#encapsulation ppp
R2(config-if)#no shutdown
R2(config-if)#exit




R2(config)#interface fastethernet2/0
R2(config-if)#ip address 30.0.0.1 255.0.0.0
R2(config-if)#no shutdown
R2(config-if)#exit



By default routers know directly connected network.



Step 2:Check the routing table of  the router R1 and R2 by giving the command show ip route in privileged mode,


In Router R1,


R1#show ip route
Codes: 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 - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
       * - candidate default, U - per-user static route, o - ODR
       P - periodic downloaded static route

Gateway of last resort is not set

C    10.0.0.0/8 is directly connected, FastEthernet2/0
C    20.0.0.0/8 is directly connected, Serial1/0




In Router R2,




R1#show ip route
Codes: 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 - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
       * - candidate default, U - per-user static route, o - ODR
       P - periodic downloaded static route

Gateway of last resort is not set

C    30.0.0.0/8 is directly connected, FastEthernet2/0
C    20.0.0.0/8 is directly connected, Serial1/0



Step 3:Now,Run Rip protocols on R1 and R2 .What rip will do is, it will create a routing update by adding directly connected networks information and it will send to neighbor routers


Just add directly connected networks

In Router R1,


R1(config)#router rip
R1(config-router)#network 10.0.0.0
R1(config-router)#network 20.0.0.0
R1(config-router)#exit



In Router R2,


R2(config)#router rip
R2(config-router)#network 20.0.0.0
R2(config-router)#network 30.0.0.0
R2(config-router)#exit




Now routers learns network information automatically through routing updates



Step 4:Now give show ip route command in R1 and R2 and check the routing table



In Router R1,

R1#show ip route
Codes: 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 - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
       * - candidate default, U - per-user static route, o - ODR
       P - periodic downloaded static route

Gateway of last resort is not set

C    10.0.0.0/8 is directly connected, FastEthernet0/0
C    20.0.0.0/8 is directly connected, Serial2/0
R    30.0.0.0/8 [120/1] via 20.0.0.2, 00:00:28, Serial2/0
R1#

Here,network 30.0.0.0 learned by the router R1 via Serial 2/0 by routing update from R2,that will be reachable via 20.0.0.2(next hop).
[120/1]-120 Administrative distance of Rip,1-Reachable on one hop.


In Router R2,


R2#show ip route
Codes: 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 - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
       * - candidate default, U - per-user static route, o - ODR
       P - periodic downloaded static route

Gateway of last resort is not set

R    10.0.0.0/8 [120/1] via 20.0.0.1, 00:00:16, Serial2/0
C    20.0.0.0/8 is directly connected, Serial2/0
C    30.0.0.0/8 is directly connected, FastEthernet0/0

Here,network 30.0.0.0 learned by the router R2 via Serial 2/0 by routing update from R1,that will be reachable via 20.0.0.1(next hop).



Step 5:Now ping from the Host 10.0.0.10 to Host 30.0.0.10 by giving command 


ping 30.0.0.10 you will get,





Rip Timers:

Update Interval-30
Invalid Interval -180
Hold Down Interval -180
Flush After-240

Administrative Distance-120








Post a Comment

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    ReplyDelete
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