Transcript 97-10-DC

Internet2 Engineering Update

Guy Almes
Internet2 Chief Engineer
<[email protected]>

Internet2 Membership Meeting
Washington — 8 October 1997
Outline of the Talk
Internet2 Engineering Objectives
 Working Groups
 GigaPoP Progress
 Four Key Engineering Issues
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Large Delay-Bandwidth Products
Introducing Quality of Service
Improving Multicast Support
Introducing IPv6
Overview of Demo Network
Internet2 Engineering Objectives
Enable Advanced Applications
 Strengthen the Universities in their Research /
Education Missions
 Pioneer Specific Technical Advances
 Establish GigaPoPs as Effective Service Points

Applications and Engineering
Applications
Motivate
Enables
Engineering
Comments on Apps and Plumbing
Advanced applications transform high-speed
plumbing into value
 Advanced plumbing enables advanced
applications

Profligate use of bandwidth, per se, does not make
an application ‘advanced’
 Megalomaniac plumbing, per se, does not make
the plumbing ‘advanced’

Comments on the University
Research/Education Mission
Due to their teaching mission, universities scatter
researchers
 University faculty and students therefore have a
disproportionate need to be able to collaborate at a
distance

Sketch of Internet2 Architecture
u
Interconnect: connects all the gigaPoPs to each other
u
GigaPoPs: connect universities to the Interconnect and to other services
gigaPoP
Universities: upgrade their LANs to more than 500 Mb/s
u
Interconnect
u
u
gigaPoP
u
gigaPoP
u
u
gigaPoP
gigaPoP
u
u
1997 vs 1998 Sets of Aspirations
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1997
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High-speed uncongested best-efforts IPv4
T3 and OC3 will be typical; some OC12
About 15 gigaPoPs; about 45 universities
Introduction of Measurements
1998

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Introduce Quality of Service
Improve Multicast Support
Introduce IPv6
Working Groups
to address project-wide technical issues
 minimal constraint on natural diversity of
gigaPoP technical choices
 complementary to groups such as the IETF

Initial Working Groups
IPv6: Dale Finkelson of Univ Nebraska
 Measurement: David Wasley of UCOP
 Multicast: Dave Meyer of Univ Oregon
 Network Mgmt: Mark Johnson of MCNC
 Quality of Service: Ben Teitelbaum (staff)
 Routing: Steve Corbato of Univ Washington
 Security: Peter Berger of Carnegie Mellon
 Topology: Paul Love (staff)

Operational GigaPoPs
DEN -- NCAR / Univ Colorado
 DTW -- Michnet
 ORD -- MREN in Chicago
 MSP -- in Minneapolis
 PHL -- MAGPI
 PIT -- PSC
 RIC -- NetworkVirginia

Coming this Month
ATL -- Southern Crossroads
 CLE -- OARnet
 HOU -- Rice, Texas A&M, Univ Houston etc.
 RDU -- NCGigaNet

Coming by end of 1997
BOS -- Boston Univ, Harvard, MIT, etc.
 BWI -- Univ Maryland etc
 DCA -- WREN
 GNV -- FloridaNet
 LEX -- SEPSCoR
 NYC -- NYSERnet2000 (southern)
 SFO -- CalREN2 (northern)

Coming early in 1998
BHM -- Alabama / Gulf Central
 BNA -- Tennessee
 LAX -- CalREN2 (southern)
 MKC -- Great Plains Network
 PDX -- Oregon
 SEA -- Washington
 SYR -- NYSERnet2000 (northern)

Four Key Engineering Issues
Large Delay-Bandwidth Products
 Introducing Quality of Service
 Improving Multicast Support
 Introducing IPv6

Large Delay-Bandwidth Products

As the product of delay and bandwidth grows:
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The number of unacknowledged packets grows
It becomes more difficult to sustain a steady stream of
data from end to end
Several consequences:
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Need for direct physical paths
Tradeoff between buffering and variation in delay
Introducing Quality of Service
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Technical:
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End-to-end vs Intermediate
Host vs Proxies
Bandwidth, Delay parameters
Administrative:
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Admission Control
Measurements
Authentication
Improving Multicast Support
Current MBone community is small
 Many advanced applications are naturally
multicast
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one to many (e.g., distance education)
few to few (e.g., graduate seminars or conferences)
Scaling is hard:
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Optimize for transmission lines?
Optimize for packet forwarding?
IPv6 Issues
Initially this will appear to be an end in itself
 We hope/expect that it will become an aid to
solving other problems
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Compact Routing Tables
Some help for QoS, IP options
Products will be available beginning 1997
International Aspect
The university community is intrinsically
international
 Advanced applications connect faculty/students
within our (international) community
 And we’ll all be buying the same technical
products / services in the future

Overview of Demo Network
T3 connection to the vBNS
 Microcosm of gigaPoP
 Microcosm of three campuses

Special thanks to …
MCI vBNS group
 Cisco, FORE, IBM
 Sun, Hewlett Packard, Silicon Graphics
 Starburst
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
Highway1 staff

GWU and Univ Maryland staff