In this lab, you will learn how to configure the following tasks: Multi Area ospf



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Cisco Network Academy

CCNA 3 Scaling Networks
Packet Tracer Practice with Dans’ Sample

http://www.danscourses.com/





  • In this lab, you will learn how to configure the following tasks:

Multi Area OSPF

Note: 2 layer hierarchy: Backbone area and non-backbone area



    1. All of the non-backbone area need to be connected to the backbone area network

    2. No more than 50 routers are in one area

    3. Border router is in no more than three area

    4. ASBR: Autonomous system boundary router

      1. It connects to the ISP

On ISP router

Router>en

Router#conf t

Router(config)#hostname ISP

ISP(config)#int g0/0

ISP(config-if)#ip address 209.165.200.17 255.255.255.240

ISP(config-if)#no shut

ISP(config-if)#ip route 0.0.0.0 0.0.0.0 g0/0

%Default route without gateway, if not a point-to-point interface, may impact performance

ISP(config)#exit

ISP#copy run start

ISP#


On ASBR router
Router>en

Router#conf t

Router(config)#hostname ASBR
ASBR(config)#int g0/0

ASBR(config-if)#ip address 209.165.200.18 255.255.255.240

ASBR(config-if)#no shut
ASBR(config-if)#do ping 209.165.200.17
ASBR(config-if)#int s0/0/0

ASBR(config-if)#ip address 10.1.1.2 255.255.255.252

ASBR(config-if)#no shut
ASBR(config-if)#int s0/0/1

ASBR(config-if)#ip address 10.2.2.2 255.255.255.252

ASBR(config-if)#clock rate 128000

ASBR(config-if)#no shut


ASBR(config-if)#ip route 0.0.0.0 0.0.0.0 g0/0

ASBR(config)#



Then, we will configure OSPF

ASBR(config)#router ospf 1

ASBR(config-router)#router-id 7.7.7.7

ASBR(config-router)#network 10.1.1.0 0.0.0.3 area 0

ASBR(config-router)#network 10.2.2.0 0.0.0.3 area 0

ASBR(config-router)#default-information originate

ASBR(config-router)#exit

ASBR(config)#exit


ASBR#copy run start

ASBR#


On ABR1 router

Router>en

Router#conf t

Enter configuration commands, one per line. End with CNTL/Z.

Router(config)#hostname ABR1

ABR1(config)#int s0/0/0

ABR1(config-if)#ip address 10.1.1.1 255.255.255.252

ABR1(config-if)#clock rate 128000

ABR1(config-if)#no shut
ABR1(config-if)#int g0/1

ABR1(config-if)#ip address 192.168.1.1 255.255.255.0

ABR1(config-if)#no shut
ABR1(config-if)#

Then, we will configure OSPF

ABR1(config-if)#

ABR1(config-if)#router ospf 1

ABR1(config-router)#router-id 5.5.5.5

ABR1(config-router)#network 10.1.1.1 0.0.0.0 area 0

ABR1(config-router)#network 192.168.1.0 0.0.0.255 area 1

ABR1(config-router)#

On R1 router

Router>en

Router#conf t
Router(config)#hostname R1

R1(config)#int g0/1

R1(config-if)#ip address 192.168.1.2 255.255.255.0

R1(config-if)#no shut


R1(config-if)#int g0/0

R1(config-if)#ip address 192.168.2.1 255.255.255.0

R1(config-if)#no shut

R1(config)#int lo0

R1(config-if)#ip address 192.168.3.1 255.255.255.0

R1(config-if)#

R1(config-if)#router ospf 1

R1(config-router)#router-id 1.1.1.1


R1(config-router)#network 192.168.1.0 0.0.0.255 area 1

R1(config-router)#network 192.168.2.0 0.0.0.255 area 1

R1(config-router)#network 192.168.3.0 0.0.0.255 area 1

R1(config-router)#



On ASBR

ASBR>en


ASBR#show ip route

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