38 messages in net.nether.puck.cisco-nsp[c-nsp] VLSM
FromSent OnAttachments
ShaunJan 10, 2005 4:53 pm 
Gert DoeringJan 10, 2005 5:26 pm 
Stephen J. WilcoxJan 10, 2005 5:27 pm 
matthew zeierJan 10, 2005 5:46 pm 
ShaunJan 10, 2005 6:19 pm 
Michael SmithJan 10, 2005 6:26 pm 
Stephen J. WilcoxJan 10, 2005 6:28 pm 
lis...@hojmark.orgJan 10, 2005 6:55 pm 
Brant I. StevensJan 10, 2005 11:25 pm 
Gert DoeringJan 11, 2005 2:33 am 
Stephen J. WilcoxJan 11, 2005 6:11 am 
Mark PersikoJan 11, 2005 10:49 am 
Gert DoeringJan 11, 2005 11:22 am 
Hudson Delbert J Contr 61 CS/SCBNJan 11, 2005 12:11 pm 
Brant I. StevensJan 11, 2005 12:45 pm 
Pete TemplinJan 11, 2005 12:52 pm 
Stephen J. WilcoxJan 11, 2005 1:30 pm 
Stephen J. WilcoxJan 11, 2005 1:39 pm 
Pete TemplinJan 11, 2005 2:09 pm 
Gert DoeringJan 11, 2005 2:47 pm 
Gert DoeringJan 11, 2005 2:48 pm 
matthew zeierJan 11, 2005 3:09 pm 
lis...@hojmark.orgJan 11, 2005 5:22 pm 
Anson RinesmithJan 11, 2005 5:47 pm 
Michael LoftisJan 11, 2005 5:57 pm 
Stephen J. WilcoxJan 11, 2005 7:23 pm 
Stephen J. WilcoxJan 11, 2005 7:37 pm 
ShaunJan 11, 2005 8:31 pm 
Jon LewisJan 11, 2005 9:48 pm 
Majid FaridJan 12, 2005 12:24 am 
matthew zeierJan 12, 2005 1:23 am 
Ted MittelstaedtJan 12, 2005 1:41 am 
Ted MittelstaedtJan 12, 2005 1:44 am 
Ted MittelstaedtJan 12, 2005 1:51 am 
lis...@hojmark.orgJan 12, 2005 1:18 pm 
lis...@hojmark.orgJan 12, 2005 1:30 pm 
ShaunJan 13, 2005 4:05 am 
Ted MittelstaedtJan 14, 2005 12:29 am 
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Subject:[c-nsp] VLSMActions...
From:Michael Smith (mksm@noanet.net)
Date:Jan 10, 2005 6:26:36 pm
List:net.nether.puck.cisco-nsp

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-----Original Message----- From: cisc@puck.nether.net [mailto:cisco-nsp- boun@puck.nether.net] On Behalf Of Shaun Sent: Monday, January 10, 2005 3:19 PM To: cisc@puck.nether.net Subject: Re: [c-nsp] VLSM

Maybe i wasnt clear about what VLSM is or does.

It's my understanding that you usually take a /24 and carve it up into a number of equal subnets. (ex: /24 cut into 8 /27's). I was asking on efnet in #ciscohelp if it was possible to carve a /24 up into multiple CIDR's (ex: /29's /28's /27's etc). They said yes and pointed me to VLSM but they did not recommend that i do this.

So my question is, if it is possble and proper can i carve a /24 up into diffrent CIDR's or should i stick with carving it up into equal subnets.

~Shaun

You can and should carve it up into the sizes that most match your need. You just have to be cognizant of bit boundaries. 2 /30's == 1 /29, 2 /29's == /28, etc. If you provision a /30, you will have another /30 next to it. You can just provision the /29 next to the /30.

Example:

Good

192.168.1.0/30 192.168.1.4/30 192.168.1.8/29

Bad

192.168.1.0/30 192.168.1.4/29

Mike

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