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Wednesday, 9 January 2013

EIGRP OSPF Redistribution Sim configuration On GNS3

In following topology there are four router, R1, R2 and R3 are running in EIGRP AS 100. While R2’s s1/2 is running in OSPF area 24, R3’s f2/0 interface is running in OSPF area 34. In this Sim you need to redistribute OSPF into EIGRP so that they can communicate with each other. At the end of your configuration ping from R1 to Test IP 172.16.100.1 must be successful.


You can practice this simulation in GNS3 very easily; first you need to create above topology in GNS3 with following configurations. I have run EIGRP on R1, R2 and R3 and OSPF on R2 and R3 according to above diagram. In real Exam you don't have any concerned regarding routing protocols configuration you just need to redistribute OSPF and EIGPR


GNS3 Configuration:

R1 Configuration:

R1(config)#int s1/0
R1 (config-if)#ip address 192.168.1.1 255.255.255.0
R1(config-if)#no shut
R1(config)#exit
R1(config)#router eigrp 100
R1(config)#network 192.168.1.0 0.0.0.255
R2 Configuration:
Router(config)#hostname R2
R2(config)#interface s1/0
R2(config-if)#ip address 192.168.1.2 255.255.255.0
R2(config-if)#interface s1/1
R2(config-if)#ip address 192.168.2.1 255.255.255.0
R2(config-if)#no sh
R2(config-if)#interface s1/2
R2(config-if)#ip address 192.168.3.1 255.255.255.0
R2(config-if)#ip ospf 1 area 24
R2(config-if)#no shut
R2(config)#router EIGRP 100
R2(config-router)#network 192.168.2.0
R2(config-router)#network 192.168.1.0
R3 Configuration:
Router(config)#hostname R3
R3(config)#interface s1/0
R3(config-if)#ip address 192.168.2.2 255.255.255.0
R3(config-if)#interface f2/0
R3(config-if)#ip address 192.168.4.1 255.255.255.0
R3(config-if)#ip ospf 1 area 34
R3(config)#router EIGRP 100
R3(config-router)#network 192.168.2.0
R4 Configuration:
Router(config)#hostname R4
R4(config)#interface s1/0
R4(config-if)#ip address 192.168.3.2 255.255.255.0
R4(config-if)#ip ospf 1 area 24
R4(config-if)#interface f2/0
R4(config-if)#ip address 192.168.4.2 255.255.255.0
R4(config-if)#ip ospf 1 area 34
After complete the above configuration you are at same stage where you need to configure this lab in exam.
We have done so much as given in exam and from now on word you have to handle this complete the configuration. 

Step for configuration in Exam:First we need 5 parameters of the s1/2 interface i.e. (Bandwidth, Delay, Reliability, Load, MTU) for this use command.
R2#config terminal
R2(config)# router ospf 1
R2(config-router)# redistribute eigrp 100 metric-type 1 subnets
R2(config-router)#exit
R2(config-router)#router eigrp 100
R2(config-router)#redistribute ospf 1 metric 1544 2000 255 1 1500



For R3 we use the show interface fa2/0 to get these 5 parameters.
R3#show interface f2/0
 

R3#config terminal
R3(config)#router ospf 1
R3(config-router)#redistribute eigrp 100 metric-type 1 subnets
R3(config)#exit
R3(config-router)#router eigrp 100
R3(config-router)#redistribute ospf 1 metric 100000 100 255 1 1500
 

Verification & testing:
Show ip route on R1: You will see the all other routes if you done the correct configuration also ping from R1 to 172.16.100.1 should be successful.

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