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 varient 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
15Mbps IPv6
Abilene
15Mbps IPv6
SVGA or Composite Video
Video Content
Firewire Link
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Network Traffic Generated

• 15 Mbps IPv6 or IPv4 traffic generated in each
  direction

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Cost of DVTS -- Wide Estimate
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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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Final Note about DVTS (IMHO)

• You have to get past source code configuration
  problems, but once you do this, the DVTS seems
  very easy and straightforward.

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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 is looking for kernel source
  code at /usr/src/linux

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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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Warnings

• Dont try to use ohci1394 stuff in pcmcia-cs
  source code -- this functionality doesnt work
  and developers dont intend to fix it.
• If you are using a Cardbus IEEE1394 card and
  Linux freezes, you must remark some ohci1394
  initialization code (this appears to be a laptop
  memory problem)