From: Joseph Saad (joseph.samir.saad@gmail.com)
Date: Mon Oct 22 2007 - 00:56:50 ART
I am glad to hear that you are not giving up.
For OSPF distance command, you need to think in which area you are and how
the area learnt about the prefix (i.e. which type of LSA).
The prefixes will be reoriginated by ABR's as type 3 or 4. 3 for Summary
LSA's and 4 to Reach the ASBR.
Hence, one prefix which has originated within the same Area as either type
1,2 will have the router-ID of the device originating the prefix or the
Router-ID of the DR.
The same prefix, outside its originating area, will be reoriginated by the
ABR as type 3. and the Router-ID would have been the router-ID of the ABR to
reach this same prefix.
External routes are originated by ASBR, LSA 5 across the OSPF domain.
External routes in NSSA are originated by the ASBR as LSA7, and reoriginated
by the ABR as LSA 5.
I may not be 100% correct, so I'd suggest that you build a 3-area network
with 2 ASBR's, 2 ABR's and 3 Internal routers and watch the output of "sh ip
ospf database". It will help understanding.
On 10/22/07, Sadiq Yakasai <sadiqtanko@gmail.com> wrote:
>
> Hey Guys,
>
> Please if anyone has a date he/she is giving up in December, I am very
> interested to take it up please...
>
> By the way, I just had my first attempt....
>
> Overall, I think the exam was really fair...i had a good strategy, but
> got caught up in a troubleshooting for some good time, which had an
> effect on my speed and consequently, interpretation of other questions
> (I guess).
>
> I came out of the exam a happy guy actually - thinkin I had nailed
> it.. (but apparently not, hehe).. even though many keep saying you
> need to wait unitl you see the score report.... i believe you all
> now...
>
> My advice, dont over complicate the exam questions.... as a result of
> my over complicating what I refer to a basic question, I lost about 2
> hours of the total exam time. And by the way, I actually fixed the
> problem at the very last 2 mins of the exam and yes, it was right.
>
> Would you see stuff you would think you dont know? Yes. Would you
> later in the exam realise you even know what you thought you didnt
> know? Yes. When you come across something that sounds soo complicated,
> try it out first. If you havent got the slightest idea on what to do,
> improvise, move on, and come back to it later. I had about 3 questions
> which I though I couldnt do the first time I read them, but I did
> them the second time and got them right actually...
>
> But indirect weight of this throughout the entire exam, huge! I
> thought my BGP was as easy as a IE Lab difficulty level 5, but I still
> got a 0 actually. Not because I cldnt do wat they wanted me to do, but
> because I had missed out something they wanted me to do alongside the
> others (which I still havent f**king figured out). And because all
> questions depended on that, I lost all my marks for even what i had
> configured to be right :-)
>
> KISS - Keep It Simple Silly ... the basic design principle. My profs
> have been telling me this for the better part of the last decade ( and
> i cant believe I have still failed them by the way - not a good
> student i would say).
>
> For those thinking about quitting, im not part of your camp! You would
> be suprised how closer to it we all are actually...Is my spirit low,
> yes. Am I giving up the fight? Im not even thinking about it!
>
> So please, if anyone wishes to drop a date in December, unicast me..
>
> Thanks!!
>
> Sadiq
>
> PS: So whats really the deal with OSPF distance command guys? Does it
> really work or not? I have tried this command many times over and it
> just doesnt work as expected. Is this really a bug or what? Can the
> guys really experienced with it say a word on this please? And no, its
> not a problem with the advertising router's router-id..... there has
> to be something else about the usage I think! I am sure many others
> are in on this one with me...
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
This archive was generated by hypermail 2.1.4 : Fri Nov 16 2007 - 13:11:17 ART