RE: simple access-list

From: Salau, Yemi (yemi.salau@siemens.com)
Date: Fri Aug 15 2008 - 13:39:59 ART


Love you scot!

Mmmmmmmmmmmmmuuuuuuuuuuuaaaaaaaaahhhhhhhhhhhhh!

Many Thanks
 
Yemi Salau

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Scott Morris
Sent: Friday, August 15, 2008 4:05 PM
To: 'Teju Oshinowo'; ccielab@groupstudy.com
Subject: RE: simple access-list

Many examples of this in ther archives....

1 00000001
4 00000100
5 00000101
      -----?-?

Where the ? Are is where you have variety/difference, therefore a 1 in
the
mask.

Mask = 00000101

Now, the difficulty for you. There are 2 bits set to the '1' value.
2^2 =
4, so there will be four matches to the mask. Namely, 0, 1, 4, 5
values.
200.1.0.0 is NOT part of your list.

So it's impossible to ONLY get those three networks in a single line!

HTH,

Scott Morris, CCIE4 #4713, JNCIE-M #153, JNCIS-ER, CISSP, et al.
CCSI/JNCI-M/JNCI-ER
Senior CCIE Instructor

smorris@internetworkexpert.com

 

Internetwork Expert, Inc.
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Power corrupts.
Study hard and be Eeeeviiiil......
 

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Teju
Oshinowo
Sent: Friday, August 15, 2008 8:26 AM
To: ccielab@groupstudy.com
Subject: simple access-list

This is simple access-list but i am still confused.Can someone help me
to
summarise this acess-list in a single statement ?
 
 I want to permit only this three network
 
200.1.1.0
200.1.4.0
200.1.5.0
 

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