How to configure OSPF Virtual Link

Hello Pradyumna

Take a look at this diagram:

If R1 crashes, then R2 and R3 will be part of the backbone Area 0, but Area 0 will be discontinuous and will look like this:

Which is the discontiguous situation described in the lesson.

Yes, this is the case. What you are describing is this scenario:

However, the virtual link is always created between the two ABRs in the intervening area. So the virtual link in the above cause would be between R1 and R2.

I hope this has been helpful!


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