From: Joe Rothstein (ziutek@mac.com)
Date: Sat Sep 18 2004 - 08:28:03 GMT-3
The solution for this lab uses back interface on the serial interface
of R4. I have no problem getting this to work, my problem is that if
this interface goes down, the lower half of the network is isolated,
despite the existence of Area 2, and a connection to R6. Because R6 no
longer has a connection to Area 0, OSPF is broken. The solution is
pretty straight forward, putting a VL between R1 and R6 over Area 2. My
question however is more a matter of what is said, and left unsaid on
the exam. I know that when we assume we often make an ass(of)u(and)me,
but should we assume that the backup solution should include this
virtual-link as well? There are notspecific requirements for this in
the task, but are the reachability requirements assumed here?
Any thoughts?
Joe
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