Firing Up DVTS over IPv6

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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 of the Wide 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 as of Jan
  10, 2002)
• MacOS X -- incomplete IPv4 seems to work IPv6
  stuff incomplete

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Tested Operating System Environments

• Linux
• Must use specific Linux kernel and configuration
• Used Debian Linux, but any Linux variant should
  be OK
• Firewire configuration on desktop easy, but
  challenging on laptop PC
• Once working, everything looked obvious
• Gory details at end of presentation

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Tested Operating System Environments

• MacOS X
• Wasnt able to build without significant
  modification port incomplete

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Tested Configuration
This shows video/audio flow Going one direction
only. For Both directions, duplicate this Going
in opposite direction.
Firewire Link
15-30Mbps IPv6
Abilene
15-30Mbps IPv6
SVGA or Composite Video
Video Content
Firewire Link
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Network Traffic Generated

• By default, 32Mbps IPv6 or IPv4 traffic is
  generated in each direction (30 frames per
  second)
• Can reduce frame rate to 15 frames per second to
  reduce bandwidth to 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 - FastEthernet Interface

Armonk, NY IPv6 Router Stats - Tunnel
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Cost of DVTS -- Wide Estimate
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DVTS Cost - My Experience
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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-presentatio
  n.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 kernel source
  code at /usr/src/linux/drivers/ieee1394
• Must install libraw1394 libraries

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Kernel configuration - 1 of 3Turning on
Experimental Code
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Kernel configuration 2 of 3Enabling IPv6
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Kernel configuration 3 of 3IEEE1394 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 not
  tested)
• Siig PCI card
• All 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

• Dont try to use ohci1394 stuff in pcmcia-cs
  source code -- it doesnt work and developers
  dont intend to fix it (I wasted a lot of time
  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 hardware
  configuration problems, but once you do this,
  DVTS seems easy and straightforward.