university of washingtoncomputing & communications state of the network terry gray director,...

University of Washington Computing & Communications

STATE OF THE NETWORK

Terry GrayDirector,

Networks & Distributed ComputingUW Computing & Communications

September 2002


Topics

• Scope• Services• Stats

– Subnets

– Devices

– Traffic

– P2P/Dorms

– Dialup

• Wireless• Security• Monitoring• Upgrades• Failures• Trends• Priorities


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


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


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


Subnets• UW Campus 338• UW Remote 135• MCIS 52• MCIS Remote 34• C&C 151• Backbone 12• Other 11

--------• Total 733


Devices


Traffic: Backbone


Traffic: Border

• Sample from yesterday:

AVERAGE MAXIMUM

INBOUND: 83Mbps 162Mbps

OUTBOUND: 223Mbps 400Mbps


Dialup Users


Dialup Use


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


Wireless

• Pilot successful

• DIY secure WAPs?

• 802.11g just approved

• 802.11a affordable


Security

• Logical Firewalls: success stories

• Evaluating other subnet options

• Secure server sanctuaries

• Host-based firewalls

• Protecting the network devices


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”


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


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


Pacific Northwest Gigapop


PNW Gigapop


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


NW Local Exchange Points

• Seattle– SNNAP/Pacific Wave (500Mbps!)

(UW benefit: 200Mbps/ $30K/mo)– SIX– PAIX

• Portland – NWAX


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


Washington K-20 Network


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)


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


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


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


K-20 Intranet Utilization

Bil

lio

ns

of

Byt

es p

er D

ay 2000

1600

1200

800

400

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

2400


Wrap Up...

• Trends

• Priorities

• Questions


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


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


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


Thanks for your Interest!

university of washingtoncomputing & communications state of the network terry gray director,...

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