Alteon Application Switch Operating System Application Guide
Open Shortest Path First (OSPF)
Document ID: RDWR-ALOS-V2900_AG1302 151
6. Optionally configure route summarization between OSPF areas.
7. Optionally configure virtual links.
8. Optionally configure host routes.
Example 1: Simple OSPF Domain
In this example, two OSPF areas are defined: the backbone and the 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 inserted into the stub area. Any traffic for IP address
destinations outside the stub area is forwarded to the stub area's IP interface, and then into the
backbone.
Figure 21: Simple OSPF Domain Example
1. Configure IP interfaces on each network that is attached to OSPF areas.
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.
3. Define the backbone. Always configure the backbone as a transit area using
areaid 0.0.0.0.
>> # /cfg/l3/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 # enable
(Enable IP interface 1)
>> IP Interface 1 # /cfg/l3/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 # mask 255.255.255.0
(Set IP mask on stub area network)
>> IP Interface 2 # enable
(Enable IP interface 2)
>> IP Interface 2 # /cfg/l3/ospf/on
(Enable OSPF on Alteon)
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