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doing the math can be confusing to some, depends on your math background, etc.

Are you having issues just understanding what a subnet is, or doing the math to know what addresses are in say a /22 (255.255.252.0) or 255.255.255.248 (/29), etc..

Here is a good cheatsheet I have posted on my wall for easy reference http://packetlife.net/media/library/15/IPv4_Subnetting.pdf

He has lots of cheatsheets there as well.

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may I suggest learning basic binary first? this will help you alot when further understanding subnets.

 

hope this helps

 

https://www.youtube.com/watch?v=C17SBPzcMRk&list=UUVEJEY_WctZ643qgUscKyLQ

 

 

the reason for this is subnetting is done through binary I found it easy to understand once binary was learnt

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  On 22/08/2014 at 14:35, Original Poster said:

I found it easy to understand once binary was learnt

Agree, your math background can make a big difference.. Which is why I ask - is the math that is causing you pain or just basic understanding what a subnet actually is?

Maybe I was just a nerd/geek but binary is something you learn in like junior high is it not.. At least it was when I was in school ;) Guess it depends on what math track your on, etc. ;)

Alternate numbering systems are something you learn early on is it not, base 10(decimal), base 2(binary), base 16 (hex) base 8 (octal). I know this was gone over way before highshcool level. And that was 30 years ago - I would think no a days they teach this in like 3 or 4th grade ;) I will ask a friend of mine who is a math teacher when this stuff is taught in school these days.

But yeah if you don't get binary and even octal doing the math can be confusing.

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