From: Curt Girardin (curt.girardin@chicos.com)
Date: Sun Apr 30 2006 - 21:43:55 GMT-3
Ah yes... I missed the first_underscore...
Curt
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Sidalo
Sent: Sunday, April 30, 2006 8:36 PM
To: Faryar Zabihi (fzabihi)
Cc: ccielab@groupstudy.com
Subject: Re: AS Path
Do not expect the backbones configs to be changed right before grading.
However watch out for keywords or phrases that would indicate that you
should definitely prepare for future scenarios. Something that says,"
Block routes from the customers of AS 100, should lead you to assume
that anything could be out there and configure accordingly. other
anything that hints at peparing for the future or future possibilities.
I would think that the better way to go would be _100$ to ensure that it
matches anything from AS 100 even if it passes through another AS first.
Would it be wrong, if you used ^100$? Probably not as long as you had
peviously made sure that you werent missing anything being sent to you
from the BB router.
On 4/30/06, Faryar Zabihi (fzabihi) <fzabihi@cisco.com> wrote:
>
> And I realize that the case I have presented is needs a simple
> modification to fix it both ways...I just wanted to know if the
> backbone configs can be changed during grading. Not crucial configs
> but adding routes and blocking certain peerings
>
>
> Faryar
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> Of Faryar Zabihi (fzabihi)
> Sent: Sunday, April 30, 2006 6:45 PM
> To: ccielab@groupstudy.com
> Subject: AS Path
>
> If the requirement is to match prefixes originated from AS 100 and
> after looking at the routing table the only ones that originate in 100
> get directly sent to your AS. So a regexp of ^100$ would catch all
> prefixes. So as a a best lab practice, Should I use this regexp or
> make sure I cover the case of ASpath 500 400 100. It meets the
> requirement to match b/c it originated in 100 but the regexp wont
> catch it. Would proctors inject certain things into backbone routers
while grading?
>
> Faryar
>
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