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Implementing / Designing a CCTV Live Streaming Video Network


We currently have a network losely built on the 4 layer hierarchical structure or server farm, core, distribution, access.

Our Server farm, Core and Distribution layer devices consist of Catalyst 6509's with Sup1/2's and MSFC2's.

I have been tasked with investigating the possibility of allowing live CCTV video (over IP) to run over our backbone. Bandwidth of up to 1Gbib/s has been quoted as a requirement and I am alittle weary of how the existing LAN will cope with this.

With no real understanding of where this is going, or how much bandwidth the system may require for the future, I am inclined to design a totally new network for this system (up to 500 IP Cameras streaming huge data over the network).

I am sure that with Multicasting / QoS I should be able to implement some of the requirements on our existing LAN but again, I am worried about the impact this may have on business critical data running across the campus.

Can anyone give me any advice, help or refernce documents that could give me some more information ?

Thanks in advance.



Re: Implementing / Designing a CCTV Live Streaming Video Network

Hi Chris!

The whole operation will depend of what is your tolarence for the poor quality, as i will point to you that bandwidth utilization will depend on the frame-rate,audio and resoulation.

I believe you had seperated the zones of your premises to different groups.For, e.g. group on Gate 1,Gate 2,Indoors of airport etc.What you need is to deploy seperate switches with seperate vlans for each of them,and give limited access to them, for eg. Gate 1 users will not be able to see whats in Gate 2,etc.Obviously there will be a central node who will have access to all cameras, but they will access them randomly(they won't be accessing 500 cameras simultaneously (: )

Moreover If you are thinking of capturing the image to storage server,you have to do this seperately as i have mentioned earlier.

I would suggest that you first see what the bandwitdh consumption is for your Network Cameras.For Eg.a res of 640x480 with frame-rate 15 will take about 1.5mbps of LAN speed and 5mb/min storage.

If you are thinking about multicasting,then also the bandwidth requirement for IP Cameras will be very huge particularly for 500 IP cameras.

Hence I will suggest u to first use approx 10 cameras simultaneously and see the impact, then only go ahead.



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