From: Johnny Dedon (johnny.dedon@xxxxxxxxxx)
Date: Fri Apr 27 2001 - 10:41:07 GMT-3
Bernard,
Pretty good use of analogy, you have been at this way too long :-). I
agree.
Johnny Dedon
Senior Staff Consultant
Exodus Professional Services
johnny.dedon@exodus.net
www.exodus.net
----- Original Message -----
From: "Bernard Omrani" <one@dollarpower.com>
To: <ccielab@groupstudy.com>
Cc: "'Jason1'" <jason1@v-labs.net>
Sent: Friday, April 27, 2001 12:55 AM
Subject: RE: Advance IP Routing - Terry Slattery - IP Classless
> IP classless command is not easy to understand, we know that. But I bet,
> after you read the following lines, you will understand what it is all
> about.
>
> First, you must understand a very simple logic. Here is the logic:
> Me and you are on a journey. If you break my leg, then you must carry me
all
> the way!
> If you understand this logic, you will understand "IP classless".
>
> RIP is telling you: I am classful, if you break my class, then you have to
> show me every route there is, or I will drop your package. I will drop it
> even though there is a default route (0.0.0.0).
>
> This means, RIP knows about 10.0.0.0
> if you break 10.0.0.0 into three, for example to 10.1.0.0 and 10.2.0.0 and
> 10.3.0.0, and then give RIP a package with a destination of 10.4.0.1, RIP
> will drop it. Why? because RIP told you, if you break my class, then you
> have to show me every damn route, otherwise I will drop it.
> Here, you broke RIP's class so you must show him the way to 10.4.0.1 and
> every other 10.x.x.x route in the universe. Otherwise RIP will drop the
> package, even if there is default route. RIP will not care about your
> default route or last resort route, it will drop your package.
>
> How do you ask RIP not to drop your package and send the unknown
> destinations to the default route, although you have been so mean to him
and
> have broken its class?
> you tell him: please, please, ip classless!
>
> Hope this answers your question.
>
> Bernard
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> -----Original Message-----
> From: Jason1 [mailto:jason1@v-labs.net]
> Sent: Thursday, April 26, 2001 10:50 AM
> To: CCIE_Lab Groupstudy List
> Subject: Advance IP Routing - Terry Slattery - IP Classless
>
>
> I'm looking at pg 99 of Advance IP Routing by Terry Slattery and I felt
that
> it didn't give a good explaination (and in fact, I felt that it is wrong)
of
> the "IP Classless" command in the Cisco IOS and also when you should be
> using
> the command. Any comments from anybody ?
>
> Jason
> **Please read:http://www.groupstudy.com/list/posting.html
> **Please read:http://www.groupstudy.com/list/posting.html
**Please read:http://www.groupstudy.com/list/posting.html
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