Example 1: simple ospf domain, Example 1: simple ospf domain 84, Figure 4-5 – Nortel Networks WEB OS 212777 User Manual
Page 84: A simple ospf domain 84
Web OS 10.0 Application Guide
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Chapter 4: OSPF
212777-A, February 2002
Example 1: Simple OSPF Domain
In this example, two OSPF areas are defined—one area is the backbone and the other is a stub
area. A stub area does not allow advertisements of external routes, thus reducing the size of the
database. Instead, a default summary route of IP address 0.0.0.0 is automatically inserted into
the stub area. Any traffic for IP address destinations outside the stub area will be forwarded to
the stub area’s IP interface, and then into the backbone.
Figure 4-5 A Simple OSPF Domain
Follow this procedure to configure OSPF support as shown in
1.
Configure IP interfaces on each network that will be attached to OSPF areas.
In this example, two IP interfaces are needed: one for the backbone network on 10.10.7.0/24
and one for the stub area network on 10.10.12.0/24.
2.
Enable OSPF.
>> # /cfg/ip/if 1
(Select menu for IP interface 1)
>> IP Interface 1 # addr 10.10.7.1
(Set IP address on backbone network
)
>> IP Interface 1 # mask 255.255.255.0
(Set IP mask on backbone network
)
>> IP Interface 1 # broad 10.10.7.255
(Set the broadcast address
)
>> IP Interface 1 # enable
(Enable IP interface 1)
>> IP Interface 1 # ../if 2
(Select menu for IP interface 2)
>> IP Interface 2 # addr 10.10.12.1
(Set IP address on stub area network
)
>> IP Interface 2 # enable
(Enable IP interface 2)
>> IP Interface 1 # mask 255.255.255.0
(Set IP mask on backbone network
)
>> IP Interface 2 # /cfg/ip/ospf/on
(Enable OSPF on the Web switch)
Area 0
(0.0.0.0)
IF 1
10.10.7.1
IF 2
10.10.12.1
Area 1
(0.0.0.1)
Backbone
Stub Area
Network
10.10.7.0/24
Network
10.10.12.0/24