University of Washington Computing & Communications
STATE OF THE NETWORK
Terry GrayDirector,
Networks & Distributed ComputingUW Computing & Communications
September 2002
University of Washington Computing & Communications
Topics
• Scope• Services• Stats
– Subnets
– Devices
– Traffic
– P2P/Dorms
– Dialup
• Wireless• Security• Monitoring• Upgrades• Failures• Trends• Priorities
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Scope of UW Networking
• Campuses– UW-Seattle – UW-Bothell– UW-Tacoma
• Medical Centers– UW Physicians Network– UW Medical Center– Harborview Medical Ctr
• MyUW.net Service
• PNW Gigapop– Peering / Exchange
(Local, National, International)
– Transit(Regional, Commodity, Internet2, PLR/NLR)
• K20 Network– K12– 2yr colleges– 4yr colleges– Libraries
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Baseline Services
• Shared 10Mbps HD• Switched 10Mbps HD• Switched 10/100Mbps FD
– backed by GE switch/router infrastructure
• Goal: Switched 10/100 FD for all; GE as needed• Reality: Cat3 wireplant upgrade will take multiple
years and multiple millions of dollars
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Advanced Services• Multicast
– Harder than it looks– Enabled on ~ 200 subnets– Older routers/switches can’t handle
• QoS– Moot on 10Mbps (half-duplex) subnets– No substitute for adequate provisioning– Probably use in K20 network first
• IPv6– Native: not yet
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Subnets• UW Campus 338• UW Remote 135• MCIS 52• MCIS Remote 34• C&C 151• Backbone 12• Other 11
--------• Total 733
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Devices
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Traffic: Backbone
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Traffic: Border
• Sample from yesterday:
AVERAGE MAXIMUM
INBOUND: 83Mbps 162Mbps
OUTBOUND: 223Mbps 400Mbps
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Dialup Users
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Dialup Use
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P2P and ResHall Traffic
• Traffic levels out of control
• Dramatic increase this year
• Violation of existing server policy
• Substantial cost implications
• Cause: P2P music/video sharing
• Solution: Packeteer bandwidth manager
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Wireless
• Pilot successful
• DIY secure WAPs?
• 802.11g just approved
• 802.11a affordable
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Security
• Logical Firewalls: success stories
• Evaluating other subnet options
• Secure server sanctuaries
• Host-based firewalls
• Protecting the network devices
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Network Monitoring• For diagnosis, capacity planning, accounting
• HP OpenView upgrade• Asta product: top-talkers• Homebrew tools, e.g.
– netflow graphing– port-based accounting– Layer2 device monitoring– automatic database synchronizer
• Still need better “Finger Pointing Tools”
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UW Network Upgrades
• DHCP servers– New hardware– New software: better failover– Longer leases: better stability
• Evaluating replacement routers– Foundry and Cisco
• Dialup– V.92/V.44 support– RADIUS authentication
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Ouch: some failures
• A few partial backbone switch failures
• Masked by redundant backbones
• Excessive errors on optical interface
• Impact: intermittent application failures
• Action: improved monitoring tools
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Pacific Northwest Gigapop
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PNW Gigapop
University of Washington Computing & Communications
PNW Gigapop Services
• Peering / Exchange– Local (e.g. ATTBI, Microsoft)– National (e.g. ESnet, DREN)– International (Canada, Taiwan, Australia)
• Transit– Regional (Intra-Gigapop)– Commodity Internet– Internet2 (Abilene)– PLR/NLR
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NW Local Exchange Points
• Seattle– SNNAP/Pacific Wave (500Mbps!)
(UW benefit: 200Mbps/ $30K/mo)– SIX– PAIX
• Portland – NWAX
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PNW-GP Upgrades
• Commodity Internet– Doubling capacity to 3Gbps– Three providers: Level3, Verio, C&W– Substantial cost reduction!
• Internet2 -NG– Link upgrades: 2.5 -> 10Gbps– Gigapop router upgrades: Juniper T320
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Washington K-20 Network
University of Washington Computing & Communications
K-12 Facts 296 School Districts (219 Rural and Remote)
2000+ Buildings
54,180 Classrooms
93,287 Staff and Teachers
1,004,770 Students
Served By:
500 Total T-1 Circuits to the District Level
(292 Data and 208 Video T-1 Circuits)
University of Washington Computing & Communications
K-12 Technology Survey Results • 95% of K-12 classrooms wired for Internet/K-20 access
• 260,000 instructional computers (of all types) in K-12
• Fewer than 57% of the computers meet min. standards
• 3,432 students enrolled in on-line classes (2000-2001)
• 76, 098 students have school-provided e-mail accounts
• Predominant uses of computers by students:
• Word processing
• Web research
Also: Instructional software or drill and practice
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K-12K-12
All Community and Technical Colleges
Selected Remote Campuses State Board for Community
and Technical Colleges
All Community and Technical Colleges
Selected Remote Campuses State Board for Community
and Technical Colleges
Community and
Technical Colleges
Community and
Technical Colleges
73 Sites73 Sites
307 Sites307 Sites
Public School Districts Educational Service
Districts Schools for Deaf and
Blind Office of Superintendent
of Public Instruction
Public School Districts Educational Service
Districts Schools for Deaf and
Blind Office of Superintendent
of Public Instruction
UW WSU Central Eastern Western Evergreen
UW WSU Central Eastern Western Evergreen
BaccalaureatesBaccalaureates
50 Sites50 Sites
Selected Remote Campuses
Higher Education Coordinating Board
Selected Remote Campuses
Higher Education Coordinating Board
Public Education Sectors 430 Connected K-20 Sites
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9 Colleges Currently Approved: Seattle University Whitman College Heritage College Whitworth College Pacific Lutheran
University St. Martin’s College Seattle Pacific University Gonzaga University Walla Walla College
9 Colleges Currently Approved: Seattle University Whitman College Heritage College Whitworth College Pacific Lutheran
University St. Martin’s College Seattle Pacific University Gonzaga University Walla Walla College
Independent Colleges
Independent Colleges
15 Sites(in process)15 Sites
(in process)
Public Library
Systems
Public Library
Systems65 Sites
(in process)65 Sites
(in process)
All Public Library Systems All Public Library Systems
New K-20 Sectors
K-12 (307)
Community/Technical College (73)
Public Baccalaureate (50)
Library (65 in process)Independent Colleges (9 approved) 2828
K20 Network Sites
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K-20 Intranet Utilization
Bil
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0J F M A M J J A S O N D
1999 2000 2001
J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J
2002
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Wrap Up...
• Trends
• Priorities
• Questions
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Surprise: Explosive Growth Continues
• More users (except dialup)• More devices• Longer use• New (bandwidth-intensive) applications
– e.g. remote collaboration tools– audio/video streaming– tele-immersion– distance learning
University of Washington Computing & Communications
Priorities• Campus:
– Router & building subnet upgrades– Network hardening– More host security options– Better diagnostic tools
• Gigapop: – 10Gbps infrastructure– PLR/NLR
• K20– Expansion– New circuit providers– Combining voice/video/data
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Questions? Or...
Other Stuff we could talk about:
• Spam Storms and other ill-winds
• Pine: 25 million users served!
• WebPine Lite: coming soon
• Nebula: nearly 2,000 desktops managed
• Survival in the telecom industry
• Digital Rights Management
• A 7-point plan for Windows security
University of Washington Computing & Communications
Thanks for your Interest!