****** **** ****** ** ******* *********** on:
- *** ********* **** *****
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- ********* *** ** ****
- ********* *** ** ****
- ****** *** ** ********
Why ****** ** ***** ************
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- ******* ********
- **** ** **************
Running *** ** *********, *** ******* **********
*** **** ****** ** ******* ****** is ***.***.*.* (* ***** * *******) which ******** *** **** *********. *******, in **** ***-***** ************ *** ******** systems, **** ** * ******, ****, or ***** ********, ***** ********* *** be ******* ******** ** ******* *** NVRs. *******, ****** ****** ******* *** consume ** ******* *** **** **********. Wireless ****** ** ******* ****** ******* consume ********** *********. ********* ******* ******** will **** ******* *********, ***.
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********** ** **** ***** ******** *********, ***** ** **** **** *********** on ****.
Ease ** **************
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Subnetting ******
*** ****** **** ** * ********* configuration ** *** ** *******, *** determines ***** ***** ** ** ** address ******* *** "*******" **. *** "host." ** ********, *** **** ******** of ********, ************ ********, *** ******* subnet *****, **** ****** ********* **********, for *** ** ******* *****, **** commonly ***.***.***.*.
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Subnets ** ***** ***********
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** * ********* *******, ******** ****** mask **** ***.***.***.* ** ***.***.***.* ** * ***.***.*.* ******* ****** users ** ****** **** *** ***.***.*.* network ******* ***** * ******, * total ** *** ***** ******* ** 255, *********** ******** ********* ** *********. Changing *** **** ** ***.***.***.* ******* this ******* ** *,*** *** (***.***.*.*-***.***.*.***). This ** *********** *****.

** *** *** ****** ***** ****** available *********, ***** *** ***** ********** ********* ****** ***********.
Comments (27)
Undisclosed Distributor #1
You touch on the skirts of it, but everyone involved in setting up private networks should be familiar with RFC1918. This defines the private subnets set aside for personal use, i.e. traffic from any device with one of these addresses will be dropped on the live Internet instead of forwarded on/processed. These subnets include 10.x.x.x, 172.16.10.x-172.16.31.x and 192.168.x.x.
Subnetting can be a tricky beast, misplacing one bit will make devices unreachable and drive you insane. If you're doing this for a living I found the Cisco books for their CCNA networking to be amazingly insightful (down to the bit level) even if you don't plan on pursuing the certification.
Good information!
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Undisclosed Integrator #2
This is all beyond me. I doubt I will ever need to interact with a network containing more than 254 devices.
The one thing I don't quite understand is how for instance a router with an address of 192.168.1.1 is able to interact with something with an address of of 192.168.2.XXX. If that 3rd digit doesn't match, wouldn't it be unreachable by the router? Or does it become reachable when the subnet digit is changed?
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Undisclosed #3
Have a look
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Undisclosed Integrator #4
Great article! - If you are new to CCTV, is there a book/course that someone can recommend on learning networking from dummy level to a decent standard?
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Jon Dillabaugh
05/01/19 12:08pm
Just a small critique here. When you increase your network size, it isn’t called subnetting, it’s called supernetting. Sub infers that you are making something smaller. Super means making it larger.
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Cary Menage
How many device discovery tools lack the ability to deal with supernetting? I know that AD lacked this ability in their discovery tool a few years back, they only had options for A,B or C.
Also frustrated by many tools not accommodating multiple NIC's or Network adapters.
It never cease to amaze me, how many of these "dinosaurs" lack fundamental networking knowledge...
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Vasiles Kiosses
Do you have a similar report on IPV6? Address space issues go away with V6 but a good understanding of the specification is very important.
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Bobby Mancia Jr.
IPVMU Certified | 06/09/19 09:48am
Should I apply subnet masks to all connected cameras?
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Bobby Mancia Jr.
IPVMU Certified | 06/09/19 10:51pm
Hi Jon, Thank you for your response. Same goes to you U#7.
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Rean Bootsma
Very nicely broken down and graphically presented, thanks!
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