Shulou(Shulou.com)06/02 Report--

Ospf discontiguous area network interworking

Experimental topology diagram:

Configuration idea: continuous areas are connected to backbone areas and non-backbone areas at the same time, and discontinuous areas are areas that are not directly connected to backbone areas, such as region 3 below, which is directly connected to region 1.

4. Experimental configuration and steps:

# first configure all the terminals and the ip address of the router, then create different processes and areas, introduce external routes, and make the whole network interoperable

# configure IP address: AR1, ip address of AR2,AR3,AR5

# configure ip address on AR1

Itnerface g 0/0/0

Ip address 192.168.12.1 255.255.255.0

Interface g0/0/2

Ip address 192.168.14.1 255.255.255.0

# configure ip address on AR2

Interface g 0/0/0

Ip adderess 192.168.12.2 255.255.255.0

Interface g0/0/1

Ip address 192.168.13.1 255.255.255.0

Interface g0/0/2

Ip address 192.168.16.2 255.255.255.0

# configure ip address on AR3

Interface g 0/0/1

Ip address 192.168.13.2 255.255.255.0

Interface g0/0/2

Ip address 192.168.15.1 255.255.255.0

# configure ip address on AR5:

Interface g0/0/2

Ip address 192.168.15.2 255.255.255.0

Interface g0/0/1

Ip address 100.1.3.254 255.255.255.0

# next configure AR4,AR7,AR8

# configure AR4 with ip address

Interface g0/0/2

Ip address 192.168.14.2 255.255.255.0

Interface g0/0/0

Ip address 192.168.17.2 255.255.255.0

Interface ethernet 4-0-0

Ip address 100.1.1.254 255.255.255.0

Interface g0/0/1

Ip address 192.168.47.1 255.255.255.0

# configure AR8 with ip address

Interface g0/0/1

Ip address 192.168.47.2 255.255.255.0

Interface g0/0/0

Ip address 100.1.2.254

# configure AR7 with ip address

Interface g0/0/0

Ip address 192.168.17.1 255.255.255.0

Interface g0/0/2

Ip address 192.168.17.2 255.255.255.0

# configure the ip address of pc1 and the ip address of pc2

Ip address 100.1.1.1 255.255.255.0

Ip address of gateway 100.1.1.254 / / pc1

Ip address 100.1.2.1 255.255.255.0

Gateway 100.1.2.254 / / configure the ip address of pc2

# next, create different areas and create different processes to introduce external routes to enable interconnection of the entire network:

# create area 0Phone1 on AR1 and declare directly connected routes

# ospf 1

Area 0

Network 192.168.12.1 0.0.0.0

Area 1

Network 192.168.14.1 0.0.0.0

# create area 0 on AR2 and declare directly connected routes

# ospf 1

Area 0

Network 192.168.12.2 0.0.0.0

Network 192.168.13.1 0.0.0.0

Network 192.168.16.2 0.0.0.0

# create area 0Phone2 on AR3 and declare directly connected routes

Ospf 1

Area 0

Network 192.168.13.2 0.0.0.0

Area 2

Network 192.168.15.1 0.0.0.0

# create area 2 on AR5 and declare directly connected routes

Ospf1

Area 0

Network 192.168.15.2 0.0.0.0

Network 100.1.3.254 0.0.0.0

# configure ip addresses for AR4, AR7 and AR8 below

# create area 0P3 for AR4 and declare directly connected routes

# ospf 1

Area 0

Network 192.168.17.1 0.0.0.0

Area 1

Network 192.168.14.2 0.0.0.0

Ospf 2

Area 3

Network 192.168.47.1 0.0.0.0

Network 100.1.1.254 0.0.0.0

# create area 0 on AR7 and declare directly connected routes

Area 0

Network 192.168.16.1 0.0.0.0

Network 192.168.17.1 0.0.0.0

# create area 3 on AR8 and declare directly connected routes

Area 3

Network 192.168.47.2 0.0.0.0

Network 100.1.2.254 0.0.0.0

# the above configuration is complete:

# in order to interconnect the whole network, the routing of processes in different areas must be introduced

# configure routing for different processes on AR4

# ospf 1

Import-router ospf 2 / / Route introducing process 2

# ospf 2

Import-router ospf 1 / / Route introducing process 1

# Verification and testing: test on AR 8: diplay ip routing-table / / as shown in the following figure:

# as can be seen from the above figure, external routing has been introduced successfully

# continue testing with the ping command: ping 100.1.2.1 / ping 100.1.3.1

# the above experiments show that the test is successful:

# Summary: to interconnect discontiguous areas, either introduce an external route or re-draw a line to make it a border router, that is, abr

# abr is connected to the backbone area at the same time, and the normal area / / is the same as bridging

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