Re: OSPF

Hi Ruhann

nssa no-summary would generate a type-3 default.

Paul.

Ruhann wrote:
> Hi guys
>
> If you have the following setup
>
> RIP----- (R5&R6)---- AREA 0----(R2)----AREA 27-----(R1)----- EIGRP
>
>
>
> 3.5 The task says area-27 should be configured as a stub. Type 7 LSA's
> should be permitted.
> A - easy enough, just area 27 nssa.
>
> Later on when getting to the redistribution,:
> 3.9 - Redistribute as needed, on R1, R5, R6, confirm full-reachability to
> from Area27 to the RIP domain.
>
> The question I have is regarding generating of a default into area 27, while
> not voilating
> the DO's, and DONT's that say "do not create a static/default unless stated
> otherwise"
>
> Area 27 needs full reachability to reach the RIP domain, and since being a
> NSSA area,
> it does by default NOT get a Default route (0/0).
>
> I configured on R2 : " area 27 nssa no-summary"
> So without violating the DO's and DONT's, changed the area type to
> Total-NSSA,
> thereby creating a default route automatically. This is also not breaking
> task 3.5, as
> Type-7 LSA are still permitted, nor any other task.
>
> But, the solution in the MOCK lab, used the following command or R2:
> " area 27 nssa default-information-originate"
>
> Mine was marked wrong, while it did not break any reachability while
> meeting task requirements
> I did not opt to use the default-information-originate as I assumed that
> would count as creating a default
> route manually, which is a beeeg NO-NO
>
> Am I taken this wrong, I feel my solution is correct and technically more
> correct than the lab solution?
> Is using the command " area 27 nssa default-information-originate" not
> count for manually creating
> a default route, even when not explicitly told?
>
> Please share you views on this

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Received on Wed Apr 08 2009 - 17:44:40 ART