From: Pierre-Alex Guanel (pierreg@planetkc.com)
Date: Sat Jul 10 2004 - 18:24:22 GMT-3
Hi ,
1) I would be as precise as possible and use the 0.0.0.255
In some cases you need the forwarding address to be in the lsa and it does
not work when using 0.0.0.0
2) the first example nssa, you MUST specify a default. The ABR won't
generate one by itself. The logic I have is that
the default-route maybe coming from the other routing protocol (injected
in the nssa) or from OSPF itself. Since OSPF can't
know, it requires you to specify
in the second example totally stubby , the only way you would be able
to get to other OSPF areas is by a default , so OSPF automatically create
the default for you. No choice there
It all depends what the lab requirements are....
Hope this is clear,
Pierre
----- Original Message -----
From: <barrerj1@hotmail.com>
To: <ccielab@groupstudy.com>
Sent: Saturday, July 10, 2004 7:06 PM
Subject: OSPF questions
> When doing OSPF what is the best approach for the following statements?
>
> I like the first option best and both accomplished the same solution,
> but I'm not sure.
>
>
>
>
>
> Router ospf 10
>
> Router-id 10.1.1.1
>
> Network 10.10.10.1 0.0.0.0 area 0
>
>
>
> Or
>
>
>
> Router ospf 10
>
> Router-id 10.1.1.1
>
> Network 10.10.10.0 0.0.0.255 area 0
>
>
>
> Additionally,
>
>
>
>
>
>
>
> When the requirement in OSPF dictates to include a default route in an
> OSPF nssa area, with two routers I have two choices:
>
>
>
> Area 10 nssa default-information-originate
>
>
>
> Or
>
>
>
> Area 10 nssa no-summary
>
>
>
>
>
> Can someone explain the difference?
>
>
>
> Thanks
>
> Jojo
>
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