Subnetting for Video Surveillance

Published Apr 30, 2019 13:40 PM

This guide explains when subnetting is used on security networks, and how it works. We explain how to add or remove IP addresses to your range, borrowing bits, and the role of the subnet mask.

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****** **** ****** ** ******* *********** on:

  • *** ********* **** *****
  • *** **** ** *** ****** ****
  • ********* *** ** ****
  • ********* *** ** ****
  • ****** *** ** ********

Why ****** ** ***** ************

***** *** * *** ******* ************** may **** ** ****** ***** ******** network, ******** *****:

  • ******* *** ** *********
  • ******* ********
  • **** ** **************

Running *** ** *********, *** ******* **********

*** **** ****** ** ******* ****** is ***.***.*.* (* ***** * *******) which ******** *** **** *********. *******, in **** ***-***** ************ *** ******** systems, **** ** * ******, ****, or ***** ********, ***** ********* *** be ******* ******** ** ******* *** NVRs. *******, ****** ****** ******* *** consume ** ******* *** **** **********. Wireless ****** ** ******* ****** ******* consume ********** *********. ********* ******* ******** will **** ******* *********, ***.

** ****** ******** ****** **** ** one *** (***.***.***.* ** ***.***.***.*), *** network ***** ** ********** *** ********* which *** ** **** *** ********** devices. ***** *** **** **** **** amount, ** ***** * **** ** 255.255.240 ***** ******* ****** *,*** ******* on *** ******.

Network ********

** ***** ********* ******* *** ********* logical ******** (*.*., ************ **. ******* LAN **. *****), * ****** ** subnet ** ********* **** ********* * device ** *******. ** ****** ****** find *** ***** ** *** ***** host.

********** ** **** ***** ******** *********, ***** ** **** **** *********** on ****.

Ease ** **************

********* ********** ****** *** ** ****** an ** ****** **** * ********* and ********** ****** ** *****. **** scanning * ******* ** ***** ********** ****** * ***** ******* ** ** quicker ** **** * ******* *******, closer ** ****** ** ****** **-*** devices, ****** **** **** ********* ** unused *********; *.*.

******** ***.**.*.* - ***.**.***.*** **** ****** 255.255.0.0 = **,*** *********

******** ***.**.*.* - ***.**.*.** **** ****** 255.255.255.224 = ** *********

*** ******* **** *** ********* ****** mask **** **** ***** * ***** to **** **** * ********* ****, like******** ** *******, ***** *** ******* ****** **** will **** **** *******.

Subnetting ******

*** ****** **** ** * ********* configuration ** *** ** *******, *** determines ***** ***** ** ** ** address ******* *** "*******" **. *** "host." ** ********, *** **** ******** of ********, ************ ********, *** ******* subnet *****, **** ****** ********* **********, for *** ** ******* *****, **** commonly ***.***.***.*.

[****, *** **** ***** ** *** only ********* **** ******* ********* ***** are ****** **** * ******* *****.]

*********Addresses / ******* ** *********

********** ******* *** ****** **** **** classfull (***** * = ***.*.*.*, * = ***.***.*.*, * = ***.***.***.*) ** classless ***** ******** **** ** ****** those ******, *** ** ***** ** changes *** ****** ** ***** *** networks. *** *** ****** ** ****** increase ***** *** ******** ******** ** decrease ***** *** ******** ********. *** graphic ***** ***** *** ****** ***** for **** ***** *** *** ****** of ***** *** ******** ********** **** each.

Default Subnet Masks and Classes

*** ***** ***** ***** *** **** make ** *** ****** ****. *** network **** *** *'*, *** * bits ** * *'* (********) = 255. *** **** **** *** *'*, which ******** = *. *** ******* below ***** *** ******* ****** **** for **** *****, *** ********** ****.

Subnet Masks Represented in Bits

Subnet **** ********** ******** *** *****

********* **** *** ********* ****** ***** is **********, **** ****** ********* **********. The *** **** **** ** **** is ** ********* **** **** *** other **** ** **** ** ******** 1 ** * ** * ** 1. ** **** ***** *** ******* then **** *** ******** **** *** network *******, *** **** **** ******** are ******* **** *** ******** **** the **** *******.

Subnets ** ***** ***********

*** ****** ****** ******** ***** ******* over *** ****** *********, ****** ***** are **** ***** **** ** ****** the ******* ** ** ********** ****** or *******. **** ** **** ** changing *** **** ***** ** *** mask. *** ***** *** **** ** removed, ** ********** *** **** ****** becomes *********.

** * ********* *******, ******** ****** mask **** ***.***.***.* ** ***.***.***.* ** * ***.***.*.* ******* ****** users ** ****** **** *** ***.***.*.* network ******* ***** * ******, * total ** *** ***** ******* ** 255, *********** ******** ********* ** *********. Changing *** **** ** ***.***.***.* ******* this ******* ** *,*** *** (***.***.*.*-***.***.*.***). This ** *********** *****.

Subnetting Examples

** *** *** ****** ***** ****** available *********, ***** *** ***** ********** ********* ****** ***********.

Comments (27)
UD
Undisclosed Distributor #1
Apr 30, 2019

*** ***** ** *** ****** ** it, *** ******** ******** ** ******* up ******* ******** ****** ** ******** with *******.  **** ******* *** ******* subnets *** ***** *** ******** ***, i.e. ******* **** *** ****** **** one ** ***** ********* **** ** dropped ** *** **** ******** ******* of ********* **/*********.  ***** ******* ******* 10.x.x.x, ***.**.**.*-***.**.**.* *** ***.***.*.*.

********** *** ** * ****** *****, misplacing *** *** **** **** ******* unreachable *** ***** *** ******.  ** you're ***** **** *** * ****** I ***** *** ***** ***** *** their **** ********** ** ** ********* insightful (**** ** *** *** *****) even ** *** ***'* **** ** pursuing *** *************.

**** ***********!

 

(4)
(10)
BB
Bob Brislin
May 01, 2019
IPVMU Certified

******* *** * *** ****** *** aside *** *** ******* ***** :

**-*** *****: **.*.*.* ~ **.***.***.*** : 8-bit ****** (***.*.*.*)

**-*** *****: ***.**.*.* ~ ***.**.***.***: **-*** subnet (***.***.*.*)

**-*** *****: ***.***.*.* ~ ***.***.***.***: **-*** subnet (***.***.*.*)

 

 

UD
Undisclosed Distributor #1
May 02, 2019

******* ********** ***** ******** ******* *, not ******* ** **********.

*******

(****** ** ******* * ****** ****)

 

BB
Bob Brislin
May 02, 2019
IPVMU Certified

*** ******** - * ***** *** 1918

UI
Undisclosed Integrator #2
May 01, 2019

**** ** *** ****** **. * doubt * **** **** **** ** interact **** * ******* ********** **** than *** *******. 

*** *** ***** * ***'* ***** understand ** *** *** ******** * router **** ** ******* ** ***.***.*.* is **** ** ******** **** ********* with ** ******* ** ** ***.***.*.***. If **** *** ***** *****'* *****, wouldn't ** ** *********** ** *** router? ** **** ** ****** ********* when *** ****** ***** ** *******?

Avatar
Sergio Guzman
May 01, 2019
Pine Crest School • IPVMU Certified

**** **** ** ****** * ****** chart *** *** *** **** *** one *** ****. **'* *** **** difficult.

 

Avatar
Craig Mc Cluskey
May 01, 2019

*** ****** **** ********** ***** ***** addresses * ****** ** * ******** address *** *****. *** *** *** in *** ****** **** ***** ** a "*", *** ********* ******* **** be ********* ** **** ** *** device's ******** *******.

** *** **** * ****** **** of ***.***.***.*, * ****** ** ***.***.*.* would ** **** ** ***** ******* at          ***.***.*.* ** ***.***.*.***. [**'* *** since *** ** ******* ********.] *** first ***** "******" ***** *** *** all "*"*, ** * ********* ******'* address **** ** ********* ** *** first ***** ****** ** *** ****** at ***.***.*.*, *.*., ***.***.*  .

** *** ******* *** ****** **** to ***.***.***.*, * ****** ** ***.***.*.* would ** **** ** ***** ******* at ***.***.*.* ** ***.***.*.***.

*** *********** #*'* "****** **** ***** reference" ***** *** ******* *******.****.***. (** *** *** ****** **********).

(7)
U
Undisclosed #5
May 01, 2019

** **** ** ****** ********* **** the ****** ***** ** *******?

***, **** ** *** ******* ** subnet ***** *******.

**** *** ****** **** ** ** address ***** ** ******* ** ******* device **** ** ** *******, *** of *** ***** ****** ** ***** to ********* ** ** **** ***** device ** ** *** **** *** (meaning ** *** **** ******* ** it ********), ** ** ** ** a ****** ******* (******* *** ******* need ** ** **** ** * router, *** *** **** ***** **** to *** *********** ****** *******).

*** ****** **** *** ***** ** address *** **** ** ******* ***** IPs *** ***** *** ***** *** remote.

** *** *** * ****** **** like ***.***.***.***, **** **** ******* ***** the *** ***** (*****) ***** ***'* necessarily ** **** ** **** ******* directly ** **** *****. (****** ***** where *** *** ***** *** ***-**** are **** ****** ** *********** ***** you ***** **** ** ********* * IP ********* *** **** ******** ***).

DL
DC Long
May 02, 2019

*** ******* ** *** **** ****** are ** *** **** ********* ******  talk ******** *** *** *** ** firewall **** **** *****.  * *** network **** *** ***** ****** ** the ****** ********* ******.  ****** ******* private ******* **** ** ****** ** a ******.  ** *** **** **** router **** ** ***** ********, ***. ******** mandates **** ***** ******* ******* ********* via ******** ******** **.  *******

(1)
UD
Undisclosed Distributor #1
May 02, 2019

*** *** ***** **** ** **** with ******** ********** **** **** *** devices, *** ******* *** **** *** will ********* ******** **** **** ***** to **** **** ****.  *** **** common ********* ***** ** * ***** business **** *** ********* * ***** block ** ****** ** ********* ** order ** **** ********* ** ***** own ******* *** ******* ****** ** the ********.  *** *** **** ***** the ******* ****** ** ** ********* that ** *** *** **** **** (they ****** ****** ******* *** ****** IP *********) *** **** **** *** IP ********** ** ** ****.  ** most ***** * ******* **** *** a ***** ** * ****** ** addresses ***** ** * ***.***.***.*** ****** (of ***** **** * *** ******** accessible, *** ***** ** *** ***** is *** "*******" ***** *** *** the **** ** *** ***** ** the "*********" *******, ******* ** *** 0's ** *** *******, ********* ** all *'*)

** **** *** ****** *******, * still **** ****** ******* *** *** chart -> *** - ** - 32 - ** - * - - * - *, *** I ***** **.

**** * ****'* ******* ****** *** much ****.

 

UD
Undisclosed Distributor #1
May 02, 2019

**********: ***.***.***.*** ******** * ***** ** 16 ** *********, * ****** **** said ***.***.***.*** ******** * *********, ** which * *** ******.

U
Undisclosed #6
May 02, 2019

*** *** *** *****://*******.***/** * **** ******'* **** ** find *** **** ******* *** *** reach ** ***** * ****** ** and ********* *****.

*******:***.***.*.* ***:***.***.***.*

*******:***.***.*.* ***:***.***.***.*

****, ********..*** * ** *****, ****** be ********* ******.

(2)
(1)
U
Undisclosed #3
May 01, 2019

**** * ****

(7)
UI
Undisclosed Integrator #4
May 01, 2019

***** *******! - ** *** *** new ** ****, ** ***** * book/course **** ******* *** ********* ** learning ********** **** ***** ***** ** a ****** ********?  

JH
John Honovich
May 01, 2019
IPVM

#*, ****** *** **** ***** *******, yes, *** *** **** ** ********** **** *** *** ****** **** ** ********** ****** (***** ****** **** *******).

Avatar
Jon Dillabaugh
May 01, 2019
Pro Focus LLC

**** * ***** ******** ****. **** you ******** **** ******* ****, ** isn’t ****** **********, **’* ****** ************. Sub ****** **** *** *** ****** something *******. ***** ***** ****** ** larger. 

(2)
(2)
Avatar
Lynn Harold
May 03, 2019

*** **** ** ** **!  * was ***** ** **** ***, **** if ***** ** **** *** ******** possibility ** ********** *** ***** ** your *******, ** ** ******* ** place *** ********/****** ********* ** *** bottom ** *** ******* *****.  *** example, *** *.*.*.* *** **** ******* Default ******* (******** ********* **** .* and .* **** ** *** ******** interfaces *** *********/******** *******) *** ******* the **** ** *** ******-***** **** octet ******* *** ***** *******-******** *******. This ***, ** *** **** **** to ******, *** ***'* **** ********* all **** *******, *** *** ******* gear *****'* *** ** *** ****** of **** ******* ****** (*'* ***** that ***).

*** * ******/***** **************, * ****** plan ** ********** ****** ***** ** the ***** ***-* ************, **** * 3 **** *** ********* ********* ********.  Something **** **** -

*.*.*.* - ******* *******
*.*.*.* - ******* */*
*.*.*.* - *.*.*.** - ******* *******, DNS, ****, ***.
*.*.*.** - *.*.*.** - *******, *******, workstations (*****)
*.*.*.** - *.*.*.** - ********, ********, audio, */*, *********
*.*.*.** - *.*.*.** - ******** *** who-knows-what *** ****
*.*.*.** - *.*.*.*** - ******* (******-**) and ****** ******* (***-****)

*** * ****** **************, ***** *** access (*** *********?) ***** ** ** separate *****.

(1)
(2)
U
Undisclosed #6
May 03, 2019

**** *** * ****** ** ****** a *** ** ******* *** ***** a ***** ** ***** * ***** of * ********. ***** ** **** add ***/***** **** ** **** ** further ************** *** ****** ***** ** noobs.

Avatar
Jon Dillabaugh
May 03, 2019
Pro Focus LLC

*** *** ** ***** *** ** about *** ******** ** * ******** subnet **** *** * ***** ******* class. *** ******** *** ******* **** subnets. *** ********** ** ******* **’* a ****** (*****) ** ******* (***) subnet **** *** ******** ******. 

Avatar
Cary Menage
May 03, 2019
IPVMU Certified

*** **** ****** ********* ***** **** the ******* ** **** **** ************? I **** **** ** ****** **** ability ** ***** ********* **** * few ***** ****, **** **** *** options *** *,* ** *.

**** ********** ** **** ***** *** accommodating ******** ***'* ** ******* ********.

 

** ***** ***** ** ***** **, how **** ** ***** "*********" **** fundamental ********** *********...

(1)
Avatar
Mike Dotson
May 03, 2019
Seneca • IPVMU Certified

****...* *** ******** ** ******* *** the **** *** ** **** *** all *** ****** **** ** * machine *** ****** *** ** **** all ** **** ** * ****.  A **** ****** ****.

(2)
VK
Vasiles Kiosses
Jun 04, 2019

** *** **** * ******* ****** on ****?  ******* ***** ****** ** away **** ** *** * **** understanding ** *** ************* ** **** important.

Avatar
Bobby Mancia Jr.
Jun 09, 2019
MIZELA CORPORATION • IPVMU Certified

****** * ***** ****** ***** ** all ********* *******?

Avatar
Jon Dillabaugh
Jun 09, 2019
Pro Focus LLC

*** *** ******* ********* ******* **** have * ****** ****** ****. 

(1)
U
Undisclosed #7
Jun 09, 2019
IPVMU Certified

*** *** ******* ********* ******* **** have * ****** ****** ****.

Avatar
Bobby Mancia Jr.
Jun 09, 2019
MIZELA CORPORATION • IPVMU Certified

** ***, ***** *** *** **** response. **** **** ** *** *#*.

RB
Rean Bootsma
May 17, 2022
IPVMU Certified

**** ****** ****** **** *** *********** presented, ******!