Part 2 C Subnetting

How to subnet Class C network

Category:

Education

Tags:

• Subnetting
• network
• classC

[Mrdanielmartins91]

when you started counting from 2,4,8 to find the number of bits to make 10 subnets and why did you not start on 1? sorry if this is really a stupid question. :(

[mtasman]

@Mrdanielmartins91

Hi Daniel,

...actually i did start with one - 1 being the first bit .. so 2 to the power of one equals 2... 2 to the power of two equals 4... 2 to the power of three equals 8... etc .. remember - when you don't understand it's 'stupid' not to ask a question... :-)

[socdaal]

less time with more knowledge, thank you very much .

[jonbar87]

Thank you! You do an EXCELLENT JOB of explaining it!!

[huntspoint20]

you put 01010101 under 16 which if you calculate that to decimal is 85 this is way im confused you dont explain how you get those calculations and why you place them under 16

[huntspoint20]

this was a great tutorial until you got to the part where you put all those zeros and ones under 16 , 32, 64, and 128 where did you get those calculations you did not explain how you got that at all i was lost after that part.

[pakistan78601]

u made it very complicated for newbies... best method is always one which requires lesser explanation and time to make understand most of the things but u r going other way round to explain very little thing using bunch of visual explanations and tables.

[eierer]

This is greatly helpful and appreciated.

[SWATWORK10]

UR a king of subnetting

[RavenDT1984]

You would have more than 10, but you are limited by base 2 numbering. Because of this fact, if you borrowed 3 bits and had a CIDR of 27, you would only have 8 networks, which is not enough to fulfill your requirement of 10 networks, which is why you have to borrow 4 bits, but you get 16 networks.

This is where VLSM comes into play, making sure you utilize as many of the IP addresses you have in your allotment that you can, with minimal waste.

[tihhkk]

GREAT VIDEO!!! Explained very well.

Just had one question, if the part of the Octet that you are borrowing from is from the left to the right (128-64-32.....) how come when you were counting to figure out how many bits you would need for 10 Subnets, you said that we need 4 because that is when we reach to higher then 10 (actually 16). if you are looking at the first bit on the left side first, it is really worth 128 not 1, which would mean that you would have more then 10??? Thanks in advance

[k0ksii]

@mtasman he is talking about the previous video, where you started counting fom 2, not from 1

[parikjan]

This just made my day, totally get it now. Thanks!