16 Dvts Over Ipv6

8/9/2019 16 Dvts Over Ipv6

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Engineering Workshops

Firing Up DVTS over IPv6

Bill Cerveny


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What is DVTS?

Digital Video over IP

Videoconferencing over IPv6 or IPv4 with

preference for IPv6

A product

ofth

eW

ide Project

http://www.sfc.wide.ad.jp/DVTS/


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Operating Systems Supported

FreeBSD

NetBSD

Linux

Windows 2000 and Windows XP (IPv4 only asof Jan 10, 2002)

MacOS X -- incomplete; IPv4 seems to work;

IPv6 stuff incomplete


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Tested Operating System

Environments

MacOS XWasntable to build without significant

modification; port incomplete


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Tested Configuration

DV Camcorder

Desktop or

Laptop PC

DV CamcorderDesktop or

Laptop PC

Abilene

Firewire Link

Firewire Link

15-30Mbps IPv6

15-30Mbps IPv6

Video Content

SVGA or

Composite Video

This shows video/audio flow

Going one direction only. ForBoth directions, duplicate this

Going in opposite direction.


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Network Traffic Generated

By default, 32Mbps IPv6 or IPv4 traffic isgenerated in each direction (30 frames per

second)

Can reduce frame rate to 15 frames per second

to reduce bandwidthto about 16Mbps without

noticable degradation in video performance


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Bandwidth Stats from Test Between

Chicago and Armonk, NY

Abilene (mix of IPv4 and IPv6 traffic)


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Bandwidth Stats from Test Between

Chicago and Armonk, NY

Armonk IPv6 Router Stats - FastEthernetInterface

Armonk, NY IPv6 Router Stats - Tunnel


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Cost of DVTS -- Wide Estimate

Item Quantity Per End Cost Each

Desktop or laptop

computer

2 $2,000

Firewire cards for

PC or laptop

2 $70

Camcorder 2 $1,500


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DVTS Cost - My Experience

Item Quantity per endCost Each

Laptop or PC 2 Used existing

equipment

Camcorder 1 $1,000

A/D Converter 1 $300

FirewireCardbus or PCI

card

2 $50-100


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References

DVTS Main Page -http://www.sfc.wide.ad.jp/DVTS/

DVTS Presentation to Internet2 IPv6

Workshop in Los Angeles -

http://www.toyabe.net/I2-presentation.ppt


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Linux Configuration Notes

Configured on Debian Linux, 2.4.12 kernel.

Turned on IEEE1394 (and IPv6) support in

Linux kernel

DVTS source code looks for IEEE1394 kernelsource code at /usr/src/linux/drivers/ieee1394

Must install libraw1394 libraries


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Kernel configuration - 1 of 3

Turning on Experimental Code


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Kernel configuration 2 of 3

Enabling IPv6


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Kernel configuration 3 of 3

IEEE1394 Options


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Personal Linux/Hardware

Compatibility Notes

What works:IBM Thinkpad T21 and 600E

Western Digital IEEE1394 Cardbus card (WDAD0003-

RNW)

Sony DCR-PC9 Camcorder (also DCR-PC3 and DCR-PC7)

Sony A/D Converter

Dell 400Mhz GX1

Pinnacle PCI IEEE1394 card

Orange Micro IEEE1394/USB PCI card (USB nottested)

Siig PCI cardAll Firewire devices listed above


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Personal Hardware Compatibility

Notes

Doesnt work: Siig 2-port Cardbus card (NN-PC2012)

Dazzle Hollywood A/D Bridge


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Warnings

Donttry to use ohci1394 stuff in pcmcia-cssource code -- it doesnt work and developers

dont intend to fix it (I wasted a lot oftime

troubleshooting it, before I gave up)

If you are using a Cardbus IEEE1394 card and

Linux freezes, you must remark some ohci1394

initialization code (this seems to be a laptop

memory problem)


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Final Note about DVTS (IMHO)

You have to get past source code and hardwareconfiguration problems, but once you do this,

DVTS seems easy and straightforward.

Documents

16 Dvts Over Ipv6