OSPF Split nonzero area

From: David Bader (David.Bader@econis.com)
Date: Fri Nov 29 2002 - 11:33:22 GMT-3

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Hi all

As we all know a split area zero in OSPF is a bad thing. My problem is i
have a split area 4, this is my scenario:

     R1-----------R2
      | |
      | 4 |
      | |
     R3-----------R4
      | |
      | 0 |
      | |
     R5-----------R6

R3, R4, R5 and R6 are in area 0. R1, R2 and the two interfaces from R3 and
R4 are in area 4.
My problem is. If i shut down the link between R1 and R2 i have two area 4!
Is this a problem?
If R4 and R3 are summarising, they will advertise the same supernet!!!
Is there a workaround or a general design recommandation to this scenario?
Is it possible to include the link between R3 and R4 into area 4 and area 0
and would this be ok?

thanks for your help!!
regards dave

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