CCNA LAB Practice - Routing Protocols (IGRP Configuration)

Routing Protocols

(IGRP Configuration)

Objective

Understanding the dynamic Routing table using the Interior Gateway Routing Protocol (IGRP).

Diagram

Procedure

1. Configuring & Assigning the IP addresses on the routers R1 & R2.
2. Check the routing table on both the routers.
3. Enable the IGRP protocol on both routers so that hosts on the both routers can communicate with each other.
4. Verifying the Routing protocols on the Router.
5. Check the routing table on both the routers after enabling the IGRP on both sides.
6. Verifying the connection of both hosts.

Step 1(A): Assigning the IP addresses on the Router R1.

R1(config)#interface serial 0

R1(config-if)#ip address 15.0.0.1 255.0.0.0

R1(config-if)#no shutdown

R1(config-if)#clock rate 64000   (Clock Rate will set only DCE Interface)

R1(config-if)#exit

R1(config)#interface ethernet 0

R1(config-if)#ip address 10.0.0.20 255.0.0.0

R1(config-if)#no shutdown

R1(config-if)#end

Step 1(B): Assigning the IP addresses on the Router R2.

R2(config)#interface serial 0

R2(config-if)#ip address 15.0.0.2 255.0.0.0

R2(config-if)#no shutdown

R2(config-if)#end

R2(config)#interface ethernet 0

R2(config-if)#ip address 20.0.0.2 255.0.0.0

R2(config-if)#no shutdown

R2(config-if)#exit

Step 2(A): Check the Routing table of the Router R1.

RA#sh ip route

C    10.0.0.0/8 is directly connected, Ethernet0

C    15.0.0.0/8 is directly connected, Serial0

Step 2(B): Check the Routing table of the Router R2.

RB#sh ip route

C    20.0.0.0/8 is directly connected, Ethernet0

C    15.0.0.0/8 is directly connected, Serial0

Step 3(A): Enable the IGRP protocol on the Router R1.

RA(config)#router igrp 10

RA(config-router)#network 10.0.0.0 (Networks to be advertised)

RA(config-router)#network 15.0.0.0 (Networks to be advertised) 

Step 3(B): Enable the IGRP protocol on the Router R2.

RB(config)#router igrp 10

RB(config-router)#network 20.0.0.0 (Networks to be advertised)

RB(config-router)#network 15.0.0.0 (Networks to be advertised) 

Step 4(A): Check the Routing Protocol on the Router R1.

RA#show ip protocols

Routing Protocol is "igrp 10"

  Sending updates every 90 seconds, next due in 38 seconds

  Invalid after 270 seconds, hold down 280, flushed after 630

  IGRP metric weight K1=1, K2=0, K3=1, K4=0, K5=0

  IGRP maximum hopcount 100

  IGRP maximum metric variance 1

  Redistributing: igrp 10

  Routing for Networks:

    10.0.0.0

    15.0.0.0

  Routing Information Sources:

    Gateway         Distance      Last Update

    15.0.0.2             100      00:00:13

  Distance: (default is 100)

Step 4(B): Check the Routing Protocol on the Router R2.

RB#show ip protocols

RB#show ip protocols

Routing Protocol is "igrp 10"

  Sending updates every 90 seconds, next due in 4 seconds

  Invalid after 270 seconds, hold down 280, flushed after 630

  IGRP metric weight K1=1, K2=0, K3=1, K4=0, K5=0

  IGRP maximum hop count 100

  IGRP maximum metric variance 1

  Redistributing: igrp 10

  Routing for Networks:

    15.0.0.0

    20.0.0.0

  Routing Information Sources:

    Gateway         Distance      Last Update

    15.0.0.1             100      00:00:32

  Distance: (default is 100)

Step 5(A): Check the Routing table of the Router R2 after enabling RIP.

RA#sh ip route

I    20.0.0.0/8 [100/8576] via 15.0.0.2, 00:01:09, Serial0

C    10.0.0.0/8 is directly connected, Ethernet0

C    15.0.0.0/8 is directly connected, Serial0

Step 5(B): Check the Routing table of the Router R2 after enabling RIP.

RB#sh ip route

C    20.0.0.0/8 is directly connected, Ethernet0

I    10.0.0.0/8 [100/8576] via 15.0.0.1, 00:01:00, Serial0

C    15.0.0.0/8 is directly connected, Serial0

Step 6: Verifying the connection of Host ‘A’ & Host ‘B’.

C:\>ping 20.0.0.1

Pinging 20.0.0.1 with 32 bytes of data:

Reply from 20.0.0.1: bytes=32 time=20ms TTL=254

Reply from 20.0.0.1: bytes=32 time=20ms TTL=254

Reply from 20.0.0.1: bytes=32 time=10ms TTL=254

Reply from 20.0.0.1: bytes=32 time=10ms TTL=254

Ping statistics for 20.0.0.1:

    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

    Minimum = 10ms, Maximum =  20ms, Average =  15ms