internet2 applications ben teitelbaum ben/ texas a&m university internet2 day february 7 th,...

Internet2 Applications

Ben Teitelbaum

http://people.internet2.edu/~ben/

Texas A&M University Internet2 Day

February 7th, 2005

College Station, Texas

2Internet2 Applications — Texas A&M University Internet2 Day — February 7th, 2005

What is an “Advanced Application”?

“…used by faculty, staff, and students in support of the research, teaching, learning, and service activities of our members”

Challenge / motivate advanced networking facilities & capabilities

Represent a breakthrough in research, learning, or technology transfer

Not initially usable on commodity Internet


How We “Do” Applications

Technology scouting

Services and training

Outreach to disciplines

Bulk transport research

Applications-enabling middleware


Technology Scouting

Bob Riddlemailto:[email protected]:+1-734-913-4257


Collaborative A/V Tools

AccessGRID• VP (replacement for VIC)

VRVS• Desktops and now PocketPC too

ConfXP• Shared applicaions

DVTS• DV Guide

Uncompressed HDTV


Equipment Loaner Pool

PC-Based Access Grid Node

H.323 MCU Videoconferencing Equipment

Delco RTPtv Box

VBrick 6200 MPEG-2 Encoder/Decoder

Polycom ViewStation FX

Cakebox (for Network Performance Measurement)


Internet2 Commons

Jonathan Tymanmailto:[email protected]:+1-734-352-7099


Internet2 Commons Charter

Promote and facilitate remote collaboration by means of innovative and integrated, standards-based Internet technologies

Create collaboration services that are...• Useful• Sustainable• Affordable• Scalable

This slide complements of Jonathan Tyman


Internet2 Commons Accomplishments

Launched H.323 Videoconferencing Service• Production, subscription-based service• Feature-rich; GDS; Firewall traversal• Conference streaming and archiving• HELP! 24/7 NOC (OARnet/OSU)

Quarterly Trainings (100+ site coordinators)

Studying Web Collaboration Tools and Extending Service Suite to the Desktop

• Extensive member interviews• Data Collaboration Survey with ViDe • Testing VRVS, WebOffice, IMFirst, Wave3 Session

This slide complements of Jonathan Tyman


Outreach to Disciplines

Arts & Humanities

Health Sciences

Science and Engineering


Application Communities

Progress is driven by those who see ways in which advanced networking technologies can benefit their research communities

Internet2 has worked with a variety of communities over time. One way to organize is by our history of interaction with these groups:

• Mature• Developing• Nascent


Arts & Humanities Outreach

http://arts.internet2.edu/

Ann Doyle• mailto:[email protected]• tel:+1-734-352-7011


Remote Master Classes

Michael Tilson Thomas (New World Symphony)

photo by R. Andrew LepleyThis slide complements of Ann Doyle


Live Performance Events

Dance in the Digital Age• Case Western University & Cleveland Institute of Music

The Bing Theater, University of Southern California, Oct 2002

This slide complements of Ann Doyle


Transcontinental Poetry Reading:A Tribute to Kenneth Koch

Live transcontinental reading of Kenneth Koch's "Twenty Poems"

Seven Internet2 campuses provided videoconferencing

Poet Anne Waldman



New Communities

Museum Community• Education• Conservation

Foreign Language Instruction• Less commonly taught languages

Archaeology Forum• Shared project planning• Shared imaging



Health Sciences Outreach

http://health.internet2.edu/

Mike McGillmailto:[email protected]

The scope of the Internet2 Health Science Workgroup includes clinical practice, medical and related biological research, education, and medical awareness in the public.

This slide complements of Mike McGill


CLINICAL: Why Physicians Participate in Internet2

Extend the provision of better healthcare• TeleHealth (eHealth)• National Tumor Board • Develop Clinical Skills and Assessment (AAMC partnership)

Distributed data sharing• Electronic Health Record• Presence and Integrated Communications (VoIP, location)• Advanced visualization Computer Assisted Surgery• Computer Aided Diagnosis

Collaboration independent of boundaries• Geography: Second Opinion Networks/Night Hawking• Time: Learning Technology (Distance Education) • Computation: Knowledge Management



Biomedical Informatics Research Network (BIRN)

Funded by: NCRR/NIH

Mark Ellisman, PhD,Univ. California San Diego, SDSC

www.nbirn.netThis slide complements of Mike McGill


EACH BRAIN REPRESENTS

A LOTOF DATA

AND COMPARISONS MUST BE MADE BETWEEN MANY

(fMRI)

Slide courtesy of Arthur Toga (UCLA)This slide complements of Mike McGill


Pipelines for Morphometric Analysis

Surgical Planning

Interoperative segmentation

Brain atlas

fMRI

Funded by NCRR/NIH

Ron Kikinis, M.D., Steve Pieper, Ph.D., Simon Warfield, Ph.D.

Brigham and Women’s Hospital, Harvard Medical School

Surgical Planning



Science & Engineering Outreach

http://science.internet2.edu/

Russ Hobbymailto:[email protected] tel:+1-530-752-0236

T. Charles Yunmailto:[email protected] tel:+1-734-352-4960


High Energy and Nuclear Physics

Physics has traditionallybeen a “power user”

Physicists are generating Terabytes of data per experiment at CERN

Types of network usage:• Bulk data transfers extremely sensitive to loss• VRVS expects multicast and low-latency/jitter networks for effective video conferencing

This slide complements of T. Charles Yun


E-VLBI (Radio Astronomy)

Astronomers observe frommultiple earth-based antennae

Data sent to specialized computer for analysis on a 24x7 basis

VLBI is not as concerned with data loss as they are with long term stability

The end goal is to send data at over 1Gb/s from 20+ antennae (located around the globe) to a facility that can process the data in real time.



NEON and Earthscope

Both in the early stagesResearch goals understoodWorking with Internet2 program managers to determine how best to use advanced networks to connect researchers, data, and sensors



Bulk Transport Research

Stanislav Shalunov • mailto:[email protected]


Bulk Transport

The killer application for high-performance networks so far

• What else do we need fat pipes for?

Several flavors:• straightforward huge file transfer • instrument data transfer (telescopes, particle

accelerators, etc.) • interactive high-throughput applications (e.g.,

ImmSeg)

This slide complements of Stanislav Shalunov


Problem Exists Below Application

Remains unsolved even in its most simple form (file transfer)

• best current practice: open n standard TCP streams, send data

• typical current practice: n=1 (e.g., FTP, HTTP, or SCP)

Expected performance (links are not congested): at least 100Mb/s

Typical performance: less than 3Mb/s (Internet2 NetFlow Weekly Reports)



Top Reasons for Poor Performance

Bad transport protocols (layer 4) - Internet2 transport effort

Ethernet duplex mismatch (layer 2)• NDT and work on characterization of the condition • Full-duplex Ethernet is the right thing• Even Gigabit Ethernet can still suffer from duplex

mismatch

Bad last-hop cables (layer 1)• Cables Go Bad After Chairs are Rolled Over Them• Fix: replace the cable• Fortunately, less common than the other problems



Conventional TCP: Bad Transport1/2

Theoretical problems: • Unstable for high-speed networks• Too sensitive to non-congestive packet loss (even after minor fixes)

• Before a loss happens, buffers need to fill: delay is at least doubled



Conventional TCP: Bad Transport2/2

Implementation problems• Buffers are laughably small

– Normal default buffer sizes: 8kB, 16kB, 32kB, 64kB– Even 64kB over 70ms limits throughput to 7.5Mb/s

• No provisions for automatic buffer increases– Users are expected to manually tune the buffer size– Cars don't ship with 3-HP engines that need to be tuned

by the driver for measly 100HP. Why should computers ship with transport protocols that get 3Mb/s and need to be tuned by the user for measly 100Mb/s?



Internet2 Transport Effort1/2

Group of congestion control researchers and high-end users formed in Oct 2004

Goal: a software implementation of user-space transport tool

• high performance• completely end-to-end: no router modifications• suitable for both bulk file transfer and interactive

multimedia• portable, easy to install and use (no kernel modifications)• advanced congestion control using existing research• tolerance for minor non-congestive packet loss



Internet2 Transport Effort2/2

Most immediate deliverable: a design space survey

• Current version: http://www.internet2.edu/~shalunov/tmp/transport-design-space-05.pdf

• Specify requirements• Document independent design questions• Converge on a design

Join the mailing list at:• https://mail.internet2.edu/wws/arc/transport



Application-Enabling Middleware

Authentication and Authorization Middleware

Connective Middleware


What is Shibboleth?

Open source attribute-based single sign-on software with an emphasis on user privacy, built on the SAML 1.1 specification

A provider and consumer of innovations in federated identity standards

An enabling technology for Internet2, international, and regional efforts at federation in education and research

This slide complements of Scott Cantor


Shibboleth Use Cases

Traditional web single sign-on

Shared electronic learning resources

Research resources (grids)

Outsourced academic or administrative services

Account linking across sites

Delegated trust in portal scenarios(e.g. meta-searching)



InCommon

A federation for American higher education, initially focused on “.edu” origins.Builds an open identity infrastructure across higher education for academic and research collaboration, outsourced and governmental services, etc.Expected to serve as a trust anchor for a variety of Internet2 efforts.Low barrier to entry, minimal legalitieshttp://incommon.internet2.edu/



Connective Middleware for Real Time Communications

high-performance, end-to-end IP transit

BobAlice

UserCampusUser Internet2/GigaPoP/ASPCampusHost Host

Network-LayerConnectivity

Applications

APIsCodecs

APIsCodecs

Signaling Signaling

Connective Middleware

Call FilteringAuth N/Z

Call FilteringAuth N/Z

IdentityPresence

Call Routing

IdentityPresence

Call Routing

Damping Middleware

Rich PresenceServices Calendaring

Location

... ...Calendaring

Location

Dire

ctor

ies D

irectories

Sig

nalin

g SignalingCampus-to-Campus

Trust / Policy / Encryption

P2P mediaand

Trust / Policy / Encryption

...or... ...or...AuxiliaryServices Gatewaying

Bridging

Messaging...

GatewayingBridging

Messaging...

GatewayingBridging

Messaging...


SIP.edu Working Group

Web Site• http://voip.internet2.edu/SIP.edu/

Chair• Dennis Baron, MIT{email, sip}: [email protected]


SIPProxyDNS

SIP-PBXGateway PBX

INVITE(sip:[email protected])

INVITE(sip:[email protected])

DNS SRV query sip.udp.bigu.edu

telephoneNumberwhere mail=”bob”

PRI / CASbigu.edu

CampusDirectory Bob's Phone

sip.udp.bigu.edu IN SRV ...

SIP.edu Architecture (today)

IP Voice

TDM Voice

SIP User Agent


DNS

INVITE (sip:[email protected])DNS SRV query

sip.udp.bigu.edu

bigu.edu

SIP User Agent

locationDB

REGISTER(Contact: 207.75.164.131)

INVITE (sip:[email protected])

SIPProxy

Bob's SIP Phones

SIP.edu Architecture (real soon)

SIPRegistrar

IP Voice, Video, IM, ...

If Bob has registered, ring his SIP UAs; Else, call his extension through the PBX.


SIP.edu Growth


Presence and Integrated Communications (PIC) Working Group

Web Site• http://pic.internet2.edu/

Chair• Jeremy George, Yale{email, sip}: [email protected]


Presence and Integrated Communications

Presence• “Notification of events that facilitate communication” (Henning Schulzrinne)

–“On-line”, “Away”, “Idle”, “On phone”, “Out to lunch”, ...

• Back to the future?–Remember: finger, write, who?–Presence restores the sense of community that existed

on timesharing systems

• Forward to the future!–New standards for interoperability and scalability–User-centric control of presence publication–Richer state semantics and automatic triggers


Rich Presence Trials

Using Internet2 meetings to prototype advanced campus services

• Advanced WiFi infrastructure (location service)• Advanced middleware infrastructure (SIP/SIMPLE presence agent / location server)

• Advanced real time communications services

Highly-participatory• Enthusiastic attendees • Distributed trial-dev team

–Columbia IRT Lab, HP Labs Cambridge, University of Pennsylvania, Ford Motor Company, Microsoft, ...


Rich Presence Enabled Clients

• WaveThree and Columbia clients (Session, SIPC)• Others welcome! (client requirements doc on web)


NG911 Project

Internet 911• 911 has been a thorn in the side of VoIP• Technically, not a hard problem

NG911• NTIA-funded project to IP-enable PSAPs

Not only solve VoIP 911, but do better!• Higher resilience• Faster call setup• Testability

Based on IETF GEOPRIV work

• Multimedia support• Open standards and COTS• Cheaper


Emerging IETF/NENA “I3” Architecture

GPS

40.86N 73.98ECN=us A1=NJ A2=Bergen

INVITE sips:sos@

DHCP

outboundproxy server

provided by local ISP?

40.86N 73.98E: Leonia, NJ fire dept.

leonia.nj.us.sos.arpaPOLY 40.85 73.97 40.86 73.99NAPTR … [email protected]

This slide complements of Henning Schulzrinne, Xiaotao Wu, & the CINEMA crew (Columbia University)

Location-based call routing: UA knows its location

internet2 applications ben teitelbaum ben/ texas a&m university internet2 day february 7 th,...

Documents

internet2 applications

university internet2

texas slide

internet2 campuses

research communities

internet2 commons charter

engineering slide

middleware slide