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Web OS 10.0 Application Guide
Example 2: Virtual Links
In the example shown in
usually required. Instead, area 2 will be connected to the backbone via a virtual link through
area 1. The virtual link must be configured at each endpoint.
Figure 4-6 Configuring a Virtual Link
Configuring OSPF for a Virtual Link on Switch #1
1.
Configure IP interfaces on each network that will be attached to the switch.
In this example, two IP interfaces are needed on Switch #1: one for the backbone network on
10.10.7.0/24 and one for the transit area network on 10.10.12.0/24.
>> # /cfg/ip/if 1
>> IP Interface 1 # addr 10.10.7.1
>> IP Interface 1 # enable
>> IP Interface 1 # ../if 2
>> IP Interface 2 # addr 10.10.12.0
>> IP Interface 2 # enable
2.
Configure the router ID.
A router ID is required when configuring virtual links. Later, when configuring the other end
of the virtual link on Web Switch 2, the router ID specified here will be used as the target vir-
tual neighbor (nbr) address.
>> IP Interface 2 # /cfg/ip/ospf/rtrid 10.10.10.1(Set static router ID on Web switch 1)
3.
Enable OSPF.
>> IP # /cfg/ip/ospf/on
n
86
Chapter 4: OSPF
Figure
Backbone
Area 0
Switch #1
(0.0.0.0)
IF 1
10.10.7.1
10.10.7.0/24
Router ID:
Network
10.10.10.1
4-6, area 2 is not physically connected to the backbone as is
Transit Area
Area 1
Switch #2
(0.0.0.1)
IF 2
IF 1
10.10.12.1
10.10.12.2
Virtual Link 1
10.10.12.0/24
Router ID:
Network
10.10.14.1
(Select menu for IP interface 1)
(Set IP address on backbone network)
(Enable IP interface 1)
(Select menu for IP interface 2)
(Set IP address on transit area network)
(Enable interface 2)
Stub Area
Area 2
(0.0.0.2)
IF 2
10.10.24.1
10.10.24.0/24
Network
(Enable OSPF on Web switch 1)
212777-A, February 2002
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