VLANs for Video Surveillance Tutorial

Author: John Scanlan, Published on Sep 26, 2016

Many people confidently say to 'use VLANs' as an answer to IP video networking problems and as a way to signal expertise.

But how should VLANs be used? What benefits do they really deliver or not?

In the note, we examine:

  • Segmentation of applications across VLANs
  • Untagged vs tagged VLANs
  • Static vs dynamic VLANs
  • VLANs for uplinks
  • Bandwidth and VLANs
  • QoS and VLANs
  • Common applications of VLANs

**** ****** *********** *** ** '*** *****' ** ** ****** to ** ***** ********** ******** *** ** * *** ** signal *********.

*** *** ****** ***** ** ****? **** ******** ** **** really ******* ** ***?

** *** ****, ** *******:

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

[***************]

********

***** (******* ***** **** *******)********* ******* * ****** ******** ****** ** ******** **** ******** separate ******* ********, ****** ******* ** *** **** "*********" ** and ****** ** *********** **** ******* ** ******* ****** **** are ****** ********.

*** ******* ** ******* ***** ***** ** * ******* ****** / ********* *******. ** **** ********, ************ ******* ** ********* from ******* ****** *** **** ******* *** ***** ******** *****. The **** ******* **** *** *********** **** **** ***** ** the ************ ***** *** *** ****** *** *** ***, ** they *** ** *** **** ****.

Untagged **. ****** *****

***** *** *** *********** ***** ** *****, ****** *** ********:

******** *****

** *******, *** ***** ** * ****** *** ***** ** a ******* ******** **** (********* **** ** *), ******* **** all ***** *** "***" *** ******. ****** ******** ***** ** another **** ** ** ******** ********** **** *******.

*** ******* ******** ***** ** ******* *************, ** ** ******** device ************* (*******, *******, ***.) **** ** *********, ** ******* is ****** ******* ** *** **** ** *** ******. *******, ports (********* *******) *** **** ** ******** ** * ****** untagged ****. ** ** * ******** ****** **** *** ******** VLANs, **** ** ****** **** ********/********, ************, *** ****, ***** must ****** *** ******* (*****) ** ***** *** *** **** segments ********, **** ** ***** *** **********.

****** *****

***** *** **** ** ****** **** ******** **** *** ***** 802.1Q *******. ******* ******** *** ******* *** **** ** ****** with * ******** ** ***** ** ********* ** *** ********* device.

*** ******* ** ****** ***** ** **** ***** *** ** assigned ** **** **** *** ****, ****** ********. *******, *** devices ********* ** ***** ***** **** **** ******* ***.**, ***** is *** ********* ** **** ** ******* ** ***** ******** devices, *** ******** ********** ******* ********** ** ** *********/********** ** PCs. ******* ** ****, ****** ***** *** ********* **** **** for ******.

Static *****

**** ***** ************ ******** *** ****** ***** ********** *** ****. For *******, ***** *-** ** * ****** *** ** **** of *** ******* ***, ***** **-** *** **** ** *** camera ****.

**** ***** ****** ***** *** **** ******, *** ******** ** set **, *** **** ** ******** ************ ** ******* *** moved ** *****, ****** ******* *****. ** *** ***** ***** we ******* * ******** ** *********** **** ***** *****:

Dynamic *****

******* ***** ****** * **** ***** ** *** *** *******, credentials, ** **** ** ******. **** ******** ******* ***********, ***** devices *** ** ******* **** *** ****, *** ********** ** needed.

*******, ******* ***** ** ******* ***** **** ****-*********, ** *** database ** ****** **** *** ****** *********** ** ***** **** be *******, ****** **** **** ******** ****, ********** ** ************ as *******, *******, *** ***** ********* ********* ******* ********* ** the **** ****, *** *** *** *****.

*** ***** **** *******

***** *** * *** ********** ** ******* *****. ***** ** provide ** ***** **** * ******* ****** **** ***** *** based **** *************. *** ****** **** ******** *** *** ******* of *** ****** ********** ** ** *** **** *** ** to *** *********** **** ***** ** *** ********** ******.

***** ******* **** *******

******* ***** *** **** *** *** *** ***** *****, ******* of ***** ** ****** ** ************:

  • ******/"***** *****": **** ****** **** ********* **** ** ***/**** ** automatically ***** *** ****** **** ********* *** ****** ** ** a ****. **** ** ******** **** ** ***** **** ** and ******* ******* ********, *** *** **** ******** ** ** cameras ** *** ******* *** ******** *********, ****** ** *********** useless ** ************.
  • ****** *********/****: *******, ******* ***** ******* ****** *********/**** *** ** assigned ** * ******** ***** ** ************ **** *** ****** controller. *** ******* ******* ***** *********, *** ** *** ** useful ** ********* ******** ***** (******, ******** ********, ******, ***.) rights ** **** ************ *******, ********** ** ***** ******* **** log ** ****.

VLANs *** *******

***** *** *** **** ** ****** ***** ** ****** ****** ports.

  • ********* **** *** ****:** ******** **** ******** ****** ***** *** *** *****, ******** uplink ***** *** ** ******** ** * ****** ****. **** is *** ******** ****** ** ***, ****** *** ****** ** VLANs **** ** ***** **** *** ****** ** ****** *****.
  • ****** ***** ****:******, ******* *** ** **** **** * ****** ****** **** or *****, ******** ** ** * ***** ****. ******* ******* trunk ***** ** ****** ** ******** ***** ***** ***.** (*** above). **** ****** ** ******** **** *******, *** ********* ********* as ** ****** *** **** *********** *** ******** ***/** ****** uplink **********.

VLAN ********

********* ******** ** ****** ******** ** *** **** ******* ** using *****. ** ********** ******* **** ******** ******* ****, ************ may ******** ******* ** *** **** ****** ** ******* **** or ***** *******. *** ********* ********, *** ******** *** ********* to **** ***** ** ******* ** *** ****** *** *** not ***** *** ************ ****.

********* *****

** ************, ***** *** *** **** ** **** *********, * popular ****. ** ** *********** **** **** ***** ****** *** amount ** ******* ** *** ***, ***** ********** *** *** sent ** *** ****** ******** *******, *** **** ** *** originating ****. *******, **** ********* **** ******* *********** ** **** large ********, **** ******** ** *******. ** * **-****** ***, they **** **** ****** ** ** ******. ** **** ************ cameras ******** **** ** *******, ***** ******* ** ***** ******** will ** ********.

VLANs *** ***

*** ** *** ******* ***** *** ***** **** ** *********** or ********** ********* ** ******* **** *** ***** **** ** conjunction **** ******* ** *******. *** *** ** *** ** VLAN ** **** ******* ********. * ************ ****, *** *******, may ******* ****** ******** ** * ***** **** ******* **** or ***** *****.

Equipment ************

************ ***** ******** ******* ******** ** ****, ** ********* ******** offer ** ************* **********. *** **** ******** ** ******* ******** (both *****-******* *** ***** ********) ********* ***** *** ****-*******. ***** may *** ********* *************** *** ************ ********** **** ***********.

VLAN ********* *** ************

*** ***** *** ******* ******, ********* ** *** ***********:

  • ***** *******:** *** ****** ***** *******, **** ** ***** ******, ***** are ********* *** **** ** ***-**** ********* ******** ******* **** support *** **** ***** ********. ****, ******* ** ******** ********* on *** **** ******** ** ******* ****** *****, ** ******** VLANs ***** ******* ******* ** *** **, ****** ****.
  • ********* *******:**** ******* * *** **** ***** ********, ***** *** **** of ******* *** ***** ** ***-***** *******, ***** *** ******** implemented. ** ** *** ******** *** ***** ********** ** *** one **** *** ****, *** *** **** *******, *** *** for ********, ** ****** ******* ***** ********. ******* ******* *** general ****** **** *** ******** **** ** ******** ********, ** give ****** ******* ****** ** *****.
  • ********* ******* ******* *****:**** ***** * *********, ******** ****** *******, ***** *** ***** not ****** ** *******. ** ****** **** *** ******* *** is ******, *** *** ******** ******** ******** *** ********* *** router.
  • ********* ******* **** *****:** ***** *******, ******** ***** *** ** ****, **** **** using * ********* ******** *******. ******* *** ******* *** ****** on ******** *****, ** ******* *** ********* ********* ** ***** on ********** ******** ******** ****** *** *******' *** **********. **** access ******* ** ******** ** *** *******, ** ****, **** manufacturers ********* ***** * ******** ****, ** ****** ******* *** create ********* ******* ***** *** ****** ****** ** *** ************ system.

***********

***** *** ***** ** ***** ** ************* ******** ** ****, they ** **** **** ********** ** ****** ****, ********** ************ access ** *****. *******, ***** *** *** * ******* ** network ********, *** ****** ** ******** **** **** *********. ******** a ***** ********* ******* ******* **** ************* *** ************, *** simply *****.

**** **** *********

**** ***** ******** *******

Comments (11)

Great info!

It would be interesting if you could cover Avaya's Fabric Connect networking technology that can help speed network implementation which have a large number of network cameras. (P.S. my current company is also an Avaya Platinum partner)

Thanks, John. One question about:

One of the reasons VLANs are often seen as restricting or allocating bandwidth is because they are often used in conjunction with quality of service. QoS may be set by VLAN in most managed switches. A surveillance VLAN, for example, may receive higher priority as a whole than general data or voice VLANs.

If the surveillance VLAN consists of a static group of ports on a non-blocking switch, how would having a higher priority improve its performance over the voice VLAN, also with its own discrete non-blocking ports?

Great question and also the most common argument for not implementing QoS.

Congestion, (#2). If you do check out this link please keep in mind (not mentioned in the linked article) that we will have other devices connected to the switch, devices that possibly consume much more bandwidth /resources than IP cameras. There may also be access or distribution switches connected to distribution or core switches, and the network congestion will be exacerbated by the aggregate traffic from the devices connected to those feeder switches. At some point our network will experience data burst / congestion / etc & we want to decide how traffic is handled.

How would this work for PCI compliance?

I've installed POS equipment and networking equipment for several of the largest retailers and they all used VLANs to separate their POS equipment. All of them had specific ports that the POS equipment needed to be connected to.

Thanks John

What about VLAN Hopping? Would that not be a security concern for those larger retailers?

Yes, and while I was not hardening the equipment for these retailers I can only guess that they implement security best practices to help mitigate double tagging & switch spoofing.

Great article and surely will help move the needle forward for the industry. The more our industry understands network security, the better.

how do we route two VLANs together to allow certain individuals on other
VLANs access to the surveillance network

It depends on the switches and routers in the network. Layer 3 switches can route between VLANs, or if using layer 2 switches, the router will route all interVLAN traffic. Depending on the brand and capabilities of the equipment, you can grant access between VLANs via firewall rules or ACLs.

Login to read this IPVM report.
Why do I need to log in?
IPVM conducts unique testing and research funded by member's payments enabling us to offer the most independent, accurate and in-depth information.

Related Reports

Ubiquiti Protect Video Surveillance Profile on Nov 07, 2018
Ubiquiti has now been in the video surveillance market for 7 years (see our first coverage back in 2011). In that time, the company's revenue has...
Dahua Dual Imager Dome Camera Tested (HDBW4231FN-E2-M) on Nov 07, 2018
Dahua has introduced a dual-imager dome model, the HDBW4231FN-E2-M, with two independently positionable sensors including integrated IR, not found...
Winter 2019 IP Networking Course on Nov 05, 2018
This is the only networking course designed specifically for video surveillance professionals.  Lots of network training exists but none of it...
Building Occupancy Codes and Access Control Tutorial on Nov 01, 2018
A building or room's classification can greatly impact which building codes must be followed. In terms of access control, these 'occupancy codes'...
Cloud Video Storage Usage 2018 on Oct 31, 2018
Storing email and documents in the cloud have long been common, with on-site email or file servers increasingly eliminated. However, what about...
Huawei To Be “Top Three Global Position” in Video Surveillance on Oct 29, 2018
Huawei - China’s biggest networking gear and smartphone maker - plans to become one of the top three global video surveillance manufacturers in...
IP Camera Installation Tool Shootout - Avigilon, Axis, Ideal, Hanwha, Triplett, Veracity on Oct 23, 2018
Setting up IP cameras has historically been challenging, with techs often precariously using a laptop on a ladder or lift. Some options for install...
Video Quality / Compression Tutorial on Oct 17, 2018
While CODECs, like H.264, H.265, and MJPEG, get a lot of attention, a camera's 'quality' or compression setting has a big impact on overall...
Last Chance - October 2018 Camera Course on Oct 04, 2018
Today is the last day to register for the October 2018 Camera Course, register now. This is the only independent surveillance camera course,...
Axis 4K vs. 5MP Camera Shootout (Q3518-LVE + Q3517-LVE) on Oct 04, 2018
Axis has released the 4K counterpart to their 5MP Q3517-LVE (see our test). Axis claims of both these cameras: Simply put, AXIS Q3518(17)-LVE...

Most Recent Industry Reports

'Sticker' Surveillance Camera Developed (CSEM Witness) on Nov 16, 2018
The Swiss Center for Electronics and Microtechnology (CSEM) has announced what it calls the: world’s first fully autonomous camera that can be...
ISC East 2018 Mini-Show Final Report on Nov 16, 2018
This is our second (updated) and final show report from ISC East. ISC East, by its own admission, is not a national or international show, billed...
Facial Detection Tested on Nov 16, 2018
Facial detection and recognition are increasingly offered by video surveillance manufacturers. Facial detection detects faces in an image/video...
Throughtek P2P/Cloud Solution Profile on Nov 15, 2018
Many IoT manufacturers either do not have the capabilities or the interest to develop their own cloud management software for their devices....
ASIS Offering Custom Research For Manufacturers on Nov 15, 2018
Manufacturers often want to know what industry people think about trends and, in particular, the segments and product they offer.  ASIS and its...
Hikvision Silent on "Bad Architectural Practices" Cybersecurity Report on Nov 14, 2018
A 'significant vulnerability was found in Hikvision cameras' by VDOO, a startup cybersecurity specialist. Hikvision has fixed the specific...
French Government Threatens School with $1.7M Fine For “Excessive Video Surveillance” on Nov 14, 2018
The French government has notified a high-profile Paris coding academy that it risks a fine of up to 1.5 million euros (about $1.7m) if it...
Integrator Credit Card Alternative Divvy on Nov 13, 2018
Most security integrators are small businesses but large enough that they have various employees that need to be able to expense various charges as...
Directory of Video Intercoms on Nov 13, 2018
Video Intercoms, also known as Video Door-Phones or Video Entry Systems, have been growing in the past decade as more and more IP camera...
Beware Amazon Go Store Hype (Tested) on Nov 13, 2018
IPVM's trip to and testing of Amazon Go's San Francisco store shows a number of significant operational and economic issues that undermine the...

The world's leading video surveillance information source, IPVM provides the best reporting, testing and training for 10,000+ members globally. Dedicated to independent and objective information, we uniquely refuse any and all advertisements, sponsorship and consulting from manufacturers.

About | FAQ | Contact