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Written Lab

189

Written Lab

iven the network diagram in the following graphic, write out the

OSPF-specific configuration to create the virtual link that would be required
for this topology.

Solution

Recall that all areas need a link back to the backbone area. If an area is not
physically adjacent to the backbone area, then a virtual link can be used to
span the transit area that separates the area from the backbone area. In this
exercise, since Area 1 does not attach directly to Area 0, we need to create a
virtual link across the transit area (Area 2).

RouterA

RouterB

RouterC

RouterD

Lo0:6.6.6.6/24

Lo0:1.1.1.1/24

2.2.2.2/24

2.2.2.3/24

4.4.4.4/24

4.4.4.5/24

7.7.7.7/24

7.7.7.8/24

Area 0

Area 2

Area 1

Lo0:8.8.8.8/24

Lo0:3.3.3.3/24

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