Comments on: Subnetting Tutorial – Subnetting Made Easy

By: shoogn

shoogn — Mon, 11 May 2015 08:00:57 +0000

The loopback is 127.0.0.1 not 127.0.0.0

By: Adebayo

Adebayo — Mon, 04 May 2015 21:08:15 +0000

Thanks a lot still trying to capture it cos am not too conversant with it but now am getting it.

By: ghoneim

ghoneim — Thu, 02 Apr 2015 10:16:51 +0000

Thanks

By: Rahul

Rahul — Wed, 01 Apr 2015 19:38:10 +0000

Really confusing

By: gary B.

gary B. — Tue, 24 Mar 2015 20:46:48 +0000

now i need “how to” crack a 11110000.11110000. 11110000.11110000/4 or another simple. issue. Thanks for your help!

By: M Ali

M Ali — Sun, 22 Mar 2015 17:58:19 +0000

Excellent Tutorial

By: Anonymous

Anonymous — Fri, 20 Mar 2015 16:31:50 +0000

Good stuff. Thanks

By: ameer kabir

ameer kabir — Thu, 26 Feb 2015 08:39:40 +0000

is there any article for CIDR or summarization

By: ameer kabir

ameer kabir — Thu, 26 Feb 2015 08:36:21 +0000

subnetting becomes very simple after I finished the article thanks a lot

By: Tauseef Yaseen

Tauseef Yaseen — Sun, 22 Feb 2015 12:45:01 +0000

Thaank u…it is very help for me.

By: loigie panganoron

loigie panganoron — Sat, 21 Feb 2015 12:02:55 +0000

good job

By: Mason

Mason — Sat, 21 Feb 2015 11:09:06 +0000

Please help,

What does it means when a question said “All of the networks are configured with the ip subnet-zero command” ?

By: Mason

Mason — Sat, 21 Feb 2015 10:58:37 +0000

Please help,

Why 2001:0db8:0:130h::87c:140b is not a valid IPV6 address?

By: mohammed mussa

mohammed mussa — Fri, 26 Dec 2014 14:03:35 +0000

I wiil amember of your programing design

By: mohammed mussa

mohammed mussa — Fri, 26 Dec 2014 14:01:07 +0000

I would like to thank for submit mask presentation

By: geteneh

geteneh — Tue, 09 Dec 2014 14:35:21 +0000

thanks

By: Eugene

Eugene — Sat, 15 Nov 2014 16:48:17 +0000

Thanks I liked everything in your presentation,let GOD reaching BLESS you .

By: KAUSHIK

KAUSHIK — Wed, 12 Nov 2014 11:26:13 +0000

Excellent and Lucid way.Simple..

By: Mariyam

Mariyam — Tue, 04 Nov 2014 21:25:19 +0000

Thank you so much for making these tutorials available to everyone !

By: Anthony

Anthony — Thu, 09 Oct 2014 10:42:24 +0000

Thanks a lot for this tutorial. :)

By: Mohammad Mozamel

Mohammad Mozamel — Wed, 08 Oct 2014 12:15:43 +0000

Nice Presentation
Subnetting is the Root of Networking if We Don’t Practice Subnetting Examples it will forgot Faster then other Protocols
Try to Design Your Lab Simulations in VLSM forms otherwise You Will Forgot Sebnetting

By: Anonymous

Anonymous — Fri, 05 Sep 2014 19:27:21 +0000

It help me so much!! Thank you so MUCH!!

By: A.N.M.NISHAD

A.N.M.NISHAD — Mon, 01 Sep 2014 13:49:22 +0000

VERY USEFUL NOTES……..

By: In this article, we will learn how

In this article, we will learn how — Tue, 19 Aug 2014 16:43:56 +0000

In this article, we will teach …. perhaps is better english

By: sumit

sumit — Mon, 11 Aug 2014 08:16:17 +0000

Awesome!! keep writing tutorials like this.
Thank you

By: Emmnaouel

Emmnaouel — Sun, 03 Aug 2014 14:56:38 +0000

To Ramandeep

No. Of subnetwork bits= 13 bits
Valid host/subnet= 11 bits

By: Ramandeep

Ramandeep — Mon, 28 Jul 2014 07:33:25 +0000

10.10.20.10/21
Solve this… write its subnetwork ids…

By: Ramandeep

Ramandeep — Mon, 28 Jul 2014 07:31:29 +0000

10.100.100.172/24
No. Of subnetwork bits= 16
Valid host/subnet= 254
As it is classles

Now there is a question having
10.10.20.10/21
No. Of subn/w bits=5 or 13
As for taking 5 its block size would be 8 and and hence total no. Of subn/w are satisfied(32)

But taking 13 block size could make out 9176 subn/w
(Its classless too)
Tell me sir what would be the answer as it is literally becoming a nightmare! :-/

By: Bhuwan

Bhuwan — Thu, 24 Jul 2014 09:42:27 +0000

I always think subnetting for me is not that much hard but when it comes for Class A and B, I just confused a lot,.., Class A and B are similar to Class C but practicall., I always confused with it. Any one has quick and fast way to subnet Class A and B???

By: Imran

Imran — Sat, 19 Jul 2014 11:59:21 +0000

Very helpful, presented in a simple and understandable format. Thanks once again!

By: Laurente XTIAN

Laurente XTIAN — Tue, 15 Jul 2014 05:18:39 +0000

HELPFUL! GOOD TUTORIAL! WELL EXPLAINED!

By: kherbek

kherbek — Tue, 01 Jul 2014 09:00:17 +0000

thanks it is helpfull

By: Kumar Gaurav Singh

Kumar Gaurav Singh — Tue, 24 Jun 2014 23:18:42 +0000

Thank you for providing such a good presentation.

By: Ali yusuf bakal

Ali yusuf bakal — Tue, 24 Jun 2014 05:00:18 +0000

I don’t understand what is the subnetting mask

By: Barno

Barno — Fri, 13 Jun 2014 22:21:51 +0000

Thank you!

By: :D

:D — Thu, 29 May 2014 13:25:19 +0000

By: pradip

pradip — Tue, 27 May 2014 12:25:04 +0000

understandable and queck lernable mater

By: pradip

pradip — Tue, 27 May 2014 12:23:37 +0000

easy to lern thanks alote good job

By: Ysabel

Ysabel — Sat, 24 May 2014 22:16:34 +0000

It’s been very informative and well explained thank you

By: Saad yousaf

Saad yousaf — Thu, 08 May 2014 17:25:54 +0000

easily understandable

By: Dan

Dan — Thu, 08 May 2014 15:58:58 +0000

Excellence. This is easy to understant than many books I have read about subnets. Thanks a lot.

By: adf

adf — Sun, 06 Apr 2014 21:30:08 +0000

this was one of the rare instructions that were crystal clear and easy to understand

kudos to you

By: musthaq

musthaq — Tue, 25 Mar 2014 07:11:07 +0000

Good work. Thanks a lot friends

By: kim jamora

kim jamora — Fri, 21 Mar 2014 02:04:08 +0000

anu po ang ip subnetting?

By: larry james cabalida

larry james cabalida — Fri, 21 Mar 2014 02:03:17 +0000

awesome@_@

By: laryy

laryy — Fri, 21 Mar 2014 01:57:36 +0000

nice one :) informative

By: Ajay Phadtare

Ajay Phadtare — Tue, 18 Mar 2014 16:14:17 +0000

great Work !!!!

By: Bargavi

Bargavi — Sat, 08 Mar 2014 11:21:15 +0000

Nice Presentation
I really forgot all this subnetting but I thank for the author so much
I have recovered them all

Subnetting was so hard
Now it is easy just as the title of this presentation

By: Anonymous

Anonymous — Wed, 19 Feb 2014 10:21:34 +0000

good presentation regarding subnet,pl do more to learn more v.v ramana bsnl vm

By: suman

suman — Tue, 04 Feb 2014 15:03:26 +0000

Hi any one have Best ccna material send to sumankumar_pagadala@live.com

By: CCENT Someday

CCENT Someday — Wed, 29 Jan 2014 02:15:41 +0000

If you need help learning to subnet, etc. Here is a video that I used to refresh and/or learn from:

http://www.youtube.com/watch?v=rs39FWDhzDs

By: Ali Tauni

Ali Tauni — Wed, 08 Jan 2014 19:56:41 +0000

nice tutorial bit learn thanx

By: Am getting a wider insight on subnetting. thanks for effort

Am getting a wider insight on subnetting. thanks for effort — Fri, 03 Jan 2014 02:59:37 +0000

Ebrahim .S. Dawo(Sudent of NJALA UNIVERSITY IN SIERRA LEONE.

By: squirrel

squirrel — Tue, 24 Dec 2013 08:35:39 +0000

omg I just realized that you gave the specific IP in the question 198.23.16.0/28. And with /30 and for this IP, the first address of the next subnet is 198.23.16.4 /30 and so the address right before that must be the broadcast address for the 1st subnet which is what we want.
Man !!!

By: squirrel

squirrel — Tue, 24 Dec 2013 07:51:30 +0000

Why the broadcast address is 198.23.16.3?
I know the first address is always the router address but I thought the last address is the broadcast right? But 198.23.16.3 is not the last address.

By: Daya

Daya — Fri, 13 Dec 2013 14:43:11 +0000

Example 3 is bit confusing

By: ruephan

ruephan — Tue, 19 Nov 2013 08:30:38 +0000

hello anybody.
i have the problem in the subneting so i’ve problem in the class a
who can help me?
please send a seperate examples to my ruephan@ymail.com
tnx anybody

By: medi abbasi

medi abbasi — Tue, 12 Nov 2013 12:15:25 +0000

hello anybody.
i have the problem in the subneting so i’ve problem in the class a
who can help me?
please send a seperate examples to my mehdi_abbasi23@yahoo.com
tnx anybody

By: 9tut

9tut — Fri, 04 Oct 2013 00:38:29 +0000

@Cynthia: This link explains “ip subnet-zero” very well, please read it: https://learningnetwork.cisco.com/thread/8388

By: Cynthia

Cynthia — Thu, 03 Oct 2013 18:26:51 +0000

9tut can you please explain the impact of no ip subnet zero. I hav asked so many and of course we must know this for the exam.

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By: Deep

Deep — Tue, 24 Sep 2013 12:29:53 +0000

+ First subnet: 198.23.16.0/30 (the 4th octet is 00000000)
+ Second subnet: 198.23.16.4/30 (the 4th octet is 00000100)
+ Third subnet: 198.23.16.8/30 (the 4th octet is 00001000)
+ Fourth subnet: 198.23.16.12/30 (the 4th octet is 00001100)

I meant this part
Please please help

By: Anonymous

Anonymous — Tue, 24 Sep 2013 12:28:59 +0000

The first subnet: 198.23.16.0/30
+ The second subnet: 198.23.16.4/30 because the increment is 4 so we plus the network address with it to get the next network address (0 + 4 = 4)
+ The third subnet: 198.23.16.8/30 (4 + 4 = 8)
+ The fourth subnet: 198.23.16.12/30 (8 + 4 = 12)

I dint understand this Part
i cannot go further without it . please someone help

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By: David Okeri

David Okeri — Mon, 23 Sep 2013 08:09:49 +0000

I did the CCNA exam on 20 sept,2013 and i highly passed it!!! Eureka 9tut and may all who contribute here be blessed. Those ready to do due course of the week do more on VTP show commands, EIGRP configurating via troubleshooting and ACL (Extended). Remember subnetting is ever there!
olesimbe@yahoo.com

By: sridevi.p

sridevi.p — Tue, 10 Sep 2013 06:05:21 +0000

Very Nice!

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praipliet — Mon, 09 Sep 2013 11:20:32 +0000

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By: Mamun

Mamun — Sun, 08 Sep 2013 19:09:30 +0000

Thanks a lot, best explanation ……………

By: Anonymous

Anonymous — Tue, 27 Aug 2013 00:10:14 +0000

oh it’s very very gooD.

By: Gayathrie

Gayathrie — Thu, 25 Jul 2013 09:57:52 +0000

Superb… (y) Thankx for the tutorial…

By: DB

DB — Mon, 22 Jul 2013 14:36:12 +0000

Okay, never mind. I was reading the question wrong. Doh!! :-)

By: DB

DB — Sun, 21 Jul 2013 18:33:30 +0000

Okay, I get the math for finding subnets, right up until you did this…
The initial network 198.23.16.0/28 is also the first subnet, so:
+ The first subnet: 198.23.16.0/30
+ The second subnet: 198.23.16.4/30
How or why did you go from /28 to /30? As much as I read and work the math out, I’m not seeing how or why you made this transition. I think it has something to do with planned vs assigned subnet mask as stated near the bottom of page 2, but I’m just not getting it. Do you have any other ways to explain it?
Thanks!
D :-)

By: John Kalokoh

John Kalokoh — Fri, 12 Jul 2013 12:10:13 +0000

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By: Anonymous

Anonymous — Thu, 11 Jul 2013 12:28:28 +0000

very good explanation … really awesome .. thank u

By: yve

yve — Sat, 29 Jun 2013 04:28:45 +0000

hi guys. i am too scared to do that ccna exam. so any help! my e-mail goldraphael@gmail.com

By: Anonymous

Anonymous — Mon, 24 Jun 2013 02:35:15 +0000

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By: Anonymous

Anonymous — Thu, 13 Jun 2013 02:51:46 +0000

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By: Anonymous

Anonymous — Thu, 30 May 2013 10:27:59 +0000

Great Stuff ! Thank you