1. Engineering Workshops Firing Up DVTS over IPv6 Bill Cerveny

2. Engineering Workshops 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/

3. Engineering Workshops 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

4. Engineering Workshops 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

5. Engineering Workshops Tested Operating System Environments MacOS X –Wasn’t able to build without significant modification; port incomplete

6. Engineering Workshops Tested Configuration DV Camcorder Desktop or Laptop PC DV Camcorder Desktop or Laptop PC Abilene Firewire Link 15-30Mbps IPv6 Video Content SVGA or Composite Video This shows video/audio flow Going one direction only. For Both directions, duplicate this Going in opposite direction.

7. Engineering Workshops 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

8. Engineering Workshops Bandwidth Stats from Test Between Chicago and Armonk, NY Abilene (mix of IPv4 and IPv6 traffic)

9. Engineering Workshops Bandwidth Stats from Test Between Chicago and Armonk, NY Armonk IPv6 Router Stats - FastEthernet Interface Armonk, NY IPv6 Router Stats - Tunnel

10. Engineering Workshops Cost of DVTS -- Wide Estimate ItemQuantity Per EndCost Each Desktop or laptop computer 2$2,000 Firewire cards for PC or laptop 2$70 Camcorder2$1,500

11. Engineering Workshops DVTS Cost - My Experience ItemQuantity per endCost Each Laptop or PC2Used existing equipment Camcorder1$1,000 A/D Converter1$300 Firewire Cardbus or PCI card 2$50-100

12. Engineering Workshops References DVTS Main Page - http://www.sfc.wide.ad.jp/DVTS/ http://www.sfc.wide.ad.jp/DVTS/ DVTS Presentation to Internet2 IPv6 Workshop in Los Angeles - http://www.toyabe.net/I2-presentation.ppt http://www.toyabe.net/I2-presentation.ppt

13. Engineering Workshops 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

14. Engineering Workshops Kernel configuration - 1 of 3 Turning on “Experimental” Code

15. Engineering Workshops Kernel configuration 2 of 3 Enabling IPv6

16. Engineering Workshops Kernel configuration 3 of 3 IEEE1394 Options

17. Engineering Workshops 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

18. Engineering Workshops Personal Hardware Compatibility Notes Doesn’t work: –Siig 2-port Cardbus card (NN-PC2012) –Dazzle Hollywood A/D Bridge

19. Engineering Workshops Warnings Don’t try to use ohci1394 stuff in pcmcia-cs source code -- it doesn’t work and developers don’t 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)

20. Engineering Workshops 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.