OSPF 117
3. Define the backbone.
The backbone is always configured as a transit area using areaid 0.0.0.0
>> Open Shortest Path First # aindex 0(Select menu for area index 0)
>> OSPF Area (index) 0 # areaid 0.0.0.0(Set the ID for backbone area 0)
>> OSPF Area (index) 0 # type transit(Define backbone as transit type)
>> OSPF Area (index) 0 # enable(Enable the area)
4. Define the stub area.
>> OSPF Area (index) 0 # ../aindex 1(Select menu for area index 1)
>> OSPF Area (index) 1 # areaid 0.0.0.1(Set the area ID for OSPF area 1)
>> OSPF Area (index) 1 # type stub(Define area as stub type)
>> OSPF Area (index) 1 # enable(Enable the area)
5. Attach the network interface to the backbone.
>> OSPF Area 1 # ../if 1 (Select OSPF menu for IP interface 1)
>> OSPF Interface 1 # aindex 0(Attach network to backbone index)
>> OSPF Interface 1 # enable(Enable the backbone interface)
6. Attach the network interface to the stub area.
>> OSPF Interface 1 # ../if 2(Select OSPF menu for IP interface 2)
>> OSPF Interface 2 # aindex 1(Attach network to stub area index)
>> OSPF Interface 2 # enable(Enable the stub area interface)
7. Apply and save the configuration changes.
>> OSPF Interface 2 # apply (Global command to apply all changes)
>> OSPF Interface 2 # save (Global command to save all changes)
Example 1: Simple OSPF domain (BBI example)
1. Configure IP interfaces on each network that will be attached to OSPF areas:
• IF 1
IP address = 10.10.7.1
Subnet mask = 255.255.255.0
• IF 2
IP address = 10.10.12.1
Subnet mask = 255.255.255.0
a. Click the Configure context button.
b. Open the IP Interfaces folder, and select Add IP Interface.
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