Transcript Southeastern Universities Research Association

SURA
H.323 & Global Deployment:
Insights from the
Internet2/R&E Community
Mary Fran Yafchak
[email protected]
IT Program Coordinator, SURA
Co-chair, Internet2 Digital Video Group
Member, LSVNP Steering Committee & ViDe
Southeastern Universities Research Association
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What’s all this I2 and R&E?
“Internet2, led by over 170 U.S. universities
working in partnership with industry and
government, is developing and deploying
advanced network applications and
technologies, accelerating the creation of
tomorrow's Internet.”
http://www.internet2.edu
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Not Your Typical IP Customer
The Internet2/R&E community:
– Has “infinite” IP bandwidth
– Operates as a multi-platform, multi-user,
transitional user environment
– “Gave birth” to the public Internet and is
intent on advancing global IP communication
– Has the capability and the need to push
technology design and development
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The “Simple” Act of
Communication
Live Receip t
In b o x
Da t a
messa g i n g
T ak,l Ch a tI,nst a n t
Mess a g i n g
Ema li
V oice
messa g i n g
Telephone
V oice m ail , a wer
n s i n ma
g c ihn es
Vid e o
messa g i n g
Vid e o Cferen
o n cing
"Vi deo ma i”l
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A Global Communication System
Must provide:
– Scalability of Services
– “scaleable to all inhabitants of the Earth” Tyler Johnson, CAVNER/ViDe
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Support for incremental deployment
Authentication by User, not Device
Support for User Mobility
Growth in accordance with an “Internet
mindset”, not a “Telco mindset”
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Investigating H.323 for R&E
• ViDeNet
http://www.vide.net/videnet
A project of ViDe
• LSVNP (Large Scale Video Network Prototype)
http://www.cavner.org/lsvnp
An overlay on ViDeNet
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Who is ViDe?
CANARIE (Canada)
College of William and Mary
George Washington
University
Georgia Institute of
Technology
North Carolina State
University
NYSERNet (New York State
Research & Education
Network)
Ohio State University
University of Alabama at
Birmingham
University of Hawaii
University of North
Carolina, Chapel Hill
University of South Carolina
University of Tennessee
Vanderbilt University
Yale University
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What is ViDe?
http://www.vide.net
“The goal of The Video Development Initiative (ViDe) is to
promote the deployment of digital video in higher education
by leveraging
collective resources
and expertise
towards addressing
challenges to
deployment — poor
interoperability,
volatile standards
and high cost.”
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What is ViDeNet?
http://www.vide.net/videnet
“…a testbed and model network in which to develop and promote ViDe's
goals for highly scalable and robust networked video technologies”.
“...serves as a forum for discussion and an
experimental testbed for ideas related to
improving the state of inter-networked
video and voice over IP architectures.”
“...quickly evolving into a global virtual
network interconnecting advanced voice
and video networks around the world.”
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ViDeNet Goals
• Bring video/voice over IP to “every human
being on the planet”
• Enable and support distributed control
• Reduce/eliminate the need for PSTN services
• Serve as a “production testbed” for the
development of video & voice over IP
technologies and best practices
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Current ViDeNet Sites
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American University in Cairo
Aristotle University of Thessaloniki
CINECA
The College of William & Mary
Columbia University
ESnet
HEAnet
Internet2
LSVNP
MCNC
Natonal Sun Yat-Sen University
Nat’l Technical University of Athens
NC State University
NYSERnet
Ohio State University
OARNet
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OneNet
Penn State
Proctor & Gamble
RADVision
SURFnet
University of Akron -Wayne College
University of Hawaii
University of New Brunswick
UNC, Chapel Hill
University of Pennsylvania
University of South Carolina
University of Tennessee
Virginia Commonwealth University
Wright State University
Yale University
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Current “Equipment Set”
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H.323 Gatekeeper (required) - With desired level of intra- and interdomain control
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H.323 Clients (required) - “The more, the merrier” - Interoperability
*very* important
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Intel ProShare 500, VCON Escort25, Escort 75 Pro, Falcon, MC8000, &
ViGo, Zydacron Z340 & Z360, Polycom Viewstation & ViaVideo, VTEL
P3/Galaxy & SmartStation/H.323, Seimens IP Phone, Sorenson Envision,
PictureTel LiveLAN, Microsoft NetMeeting??, others?
MCU (optional) - Enables multi-point conferences
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RADVision, Cisco, others?
RADVision, Accord, Ezenia(Videoserver), others?
Gateway(s) (optional) - Enables communication with other “popular”
communication types, e.g. H.320, Voice, H.321
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RADVision H.323/320, Cisco/VoIP, Ezenia(Videoserver) H.323/H.320,
others?
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Current Target Areas
• Inter-zone gatekeeper communication
– “A Model for Internet-extensible H.323 Communications: The
ViDeNet Reference Gatekeeper Model”
http://www.cavner.org/cavner_info/wp.html
• Extensible dialing plan (on and off “the Net”)
– http://www.cavner.org/cavner_info/wp.html
• Increase cross-organizational communication
• Additional work with vendor/developers
• Experimental
Production
Southeastern Universities Research Association
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Current Target Areas
• Inter-zone gatekeeper communication
– “A Model for Internet-extensible H.323 Communications:
The ViDeNet Reference Gatekeeper Model”
http://www.cavner.org/cavner_info/wp.html
• Extensible dialing plan (on and off “the Net”)
– http://www.cavner.org/cavner_info/wp.html
• Increase cross-organizational communication
• Additional work with vendor/developers
• Experimental
Production
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What is LSVNP?
http://www.cavner.org/lsvnp
An advanced networking project
investigating and deploying a model
architecture for video-IP services
LSVNP is managed for ViDe by:
• The University of Tennessee
• The Georgia Institute of Technology
• NYSERNet
• The University of North Carolina at Chapel Hill
Sponsored by SURA & BBN/GTE Internetworking
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Summary of LSVNP
• A focused project investigation overlaid
on ViDeNet
• Provides a highly managed set of H.323
services to a targeted group of users
– 160 users in 15 diverse projects
• Seeks to define a model for “full” videoIP conferencing service deployment
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LSVNP Projects
Middle America Earthquake Center -
PEPNET
National Center for Early Development
and Learning - Research on childhood
Marine Sciences
Researcher collaboration at UIUC
development at UNC-Chapel Hill
Virtual Design Studio - Architectural Design at
Georgia Institute of Technology
Louisiana Statewide Research Network
- Video collaboration at LA Board of Regents
Virtual Rounds - Veterinary medicine clinical
support at University of Tennessee, Knoxville
SCUPSONet - Economic development, assisted by
UNC-Chapel Hill
University of Alabama - Statewide medical
school collaboration, UA at Birmingham
- Univ. of Tennessee Center on Deafness
- Interconnection of laboratory
and teaching facilities, UNC-Chapel Hill
Public Health - Provision of services to rural public
health facilities, through UNC-Chapel Hill
Social Work - Teaching and training over the
Internet, UNC-Chapel Hill
Virginia Educational Alliance - Assisting
K12 teachers with technology in the classroom
Vanderbilt University
collaboration
- Engineering
Emergency Telemedicine
- University at
Buffalo, emergency medicine in Western New York
Speech Language Pathology - Teaching and
diagnosis at New York University
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LSVNP
Web
Site
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LSVNP Logical Configuration
Georgia
Institute of
Technology
University of
Tennessee,
Knoxville
NYSERNet
RADVision NGK-100
H.323 Gatekeeper
RADVision
MCU-323
RADVision NGK-100
H.323 Gatekeeper
RADVision
MCU-323
Router
Abilene*
RADVision NGK-100
H.323 Gatekeeper
RADVision
MCU-323
University of
North
Carolina,
Chapel Hill
Router
Router
RADVision NGK-100
H.323 Gatekeeper
RADVision
MCU-323
RADVision – Spare cascader
MCU-323
Router
*http://www.ucaid.edu/abilene
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LSVNP - Early Findings I
• Equipment selection & purchase, project
integration, & timing - significant milestones!
• Most support required for initial client
installation and training on LSVNP service
“conventions”
• Second-most support required for use of fickle
& “semi-interoperable” clients - but improving!
• “Back-end” services (GK, MCU) are generally
the most reliable part
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LSVNP - Early Findings II
• Firewalls & H.323 - not a pretty sight!
• Call aspect most in need of improvement: Data
collaboration & application sharing
• Still waiting for that Internet-extensible
gatekeeper...
• H.323 at/around 384K works over commodity
Internet as well as Internet2 - (O.K., not
predictably…)
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Not So Simple After All?
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Client application issues
Gatekeeper issues
“Going Global” issues
Human issues
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Not So Simple After All?
• Client Application Issues
– Client/Platform Choice
– Data collaboration doesn’t mean Net Meeting
– Functionality sells! Voice mail, call hold, call
forward, call transfer, caller ID...
– Don’t decide for the network (no bandwidth
restrictions!) but work with network services
(e.g., QoS, whatever it may become…)
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Not So Simple After All?
• Gatekeeper Issues
– More robust implementations (improved operating systems,
processes as system services or daemons)
– Expected Internet “server-like” security (remote access,
usage/error logging, “CERT-ifiable” [see http://www.cert.org]
– DNS-aware (gatekeeper-to-gatekeeper communication,
alphanumeric naming, e.g., [email protected])
– Anticipate/support need for shared (inter-zone) services
– Improvements in user account management (external vs. internal
user lookup, concept of “groups”)
– Not be everything, work with “everything” (Name server, Policy
broker, Directory server)
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Not So Simple After All?
• “Going Global” Issues
– Tight integration with Voice-over-IP...It just makes sense.
– “Prepare to join the Grid” - User authentication vs. device
authentication, multi-user authentication on multi-user
systems
– Communication with global directory servers as they evolve
– Communication with network policy servers as they evolve
– Definition of H.323 metadata type for Web integration
– Gateways, gateways, gateways…for the foreseeable future
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The Truth of Implementation
Southeastern Universities Research Association
SURA
The Truth of Implementation
Southeastern Universities Research Association
SURA
The Truth of Implementation
Southeastern Universities Research Association
SURA
The Truth of Implementation
Southeastern Universities Research Association
SURA
The Truth of Implementation
Time passes;
Human appetite
prevails...
Southeastern Universities Research Association
SURA
The Truth of Implementation
Time passes;
Human appetite
prevails...
Southeastern Universities Research Association
SURA
Questions or Comments?
[email protected]
US 315-593-0718
Southeastern Universities Research Association