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Fred Harris Vice-President Research, Architecture and Design. Transport. SONET Rings. To Vancouver, BC. Via New Westminster. Everett. East Wenatchee. Spokane. SEATTLE. Tacoma. Montreal, QC. Montreal, QC. (UNITEL). (Stentor). Helena. Coeur d' Alene. Alburg Springs. Portland.

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Slide1 l.jpg

Fred Harris

Vice-President

Research, Architecture and Design



Sonet rings l.jpg
SONET Rings

To Vancouver, BC

Via New Westminster

Everett

East Wenatchee

Spokane

SEATTLE

Tacoma

Montreal, QC

Montreal, QC

(UNITEL)

(Stentor)

Helena

Coeur d' Alene

Alburg Springs

Portland

Essex Jct.

Bismarck

Portland

Fargo

Iron Mountain

Ring 43 (2)

Billings

Manchester

Salem

North Chelsford

Framingham

Worcester

St. Cloud

Boston

Ring 41 (4)

Mansfield

Eau Claire

SPRINGFIELD

Ft. Erie, ON

Syracuse

Eugene

Niagara Falls, ON

Appleton

Albany

(UniTel)

(Stentor)

ST. PAUL

Providence

Niagara Falls

Rochester

Bandon Cable Head

Ring 13 (3)

Green Hill Cable Head

BUFFALO

Hartford

Saginaw

New London

New Haven

Binghamton

Bridgeport

Ring 4 (13)

Medford

Owatonna

Stamford

Flint

Grand Rapids

White Plains

Ring 8 (13)

Ring 69 (9)

Hackensack

Shirley Cable Head

Milwaukee

Ring 113 (4)

Sparta

Sioux Falls

Windsor, ON

Ring 87 (4)

Scranton

Franklin

Madison

NEW YORK

Lansing

Erie

Pontiac

Morristown

Newark

DETROIT

Kalazamoo

Edison

Ring 21 (19)

Cleveland

Manasquan

CHICAGO

Trenton

Youngstown

Toledo

Cedar Rapids

South Bend

Manahawkin

Dekalb

Clinton

Sterling

Philadelphia

Harrisburg

PENNSAUKEN

Redding

Ring 138 (9)

Ring 34 (13)

Des Moines

Pittsburgh

AKRON

Sioux City

Mansfield

Wilmington

Tuckerton

Auburn

Fostoria

Hammond

Hagerstown

Pleasant Hill

CHEYENNE

Baltimore

Reno Jct.

Worthington

Grand Island

RELAY

Chico

OMAHA

Ring 99 (6)

Columbus

Ring 16 (11)

Martinsburg

OROVILLE

Reno

Dayton

Peoria

Bloomington

Lafayette

Point Arena

Salt Lake City

WASHINGTON

Chillicothe

Indianapolis

Lincoln

ROACHDALE

Rancho

Sacramento

Cincinnati

Manassas

Cordova

Walnut Creek

Denver

Sciotoville

Fredericksburg

Champaign

San Ramon

Springfield

Charleston

Ring 44 (3)

Charlottesville

Terre Haute

Oakland

STOCKTON

Ashland

Huntington

Richmond

KANSAS CITY

Ring 71 (9)

Ring 122 (4)

Lynchburg

San Francisco

Vincennes

Modesto

Lawrenceville

Lexington

Colorado Springs

Newport News

Topeka

Burlingame

Ring 50 (13)

Louisville

St. Louis

Palo Alto

Roanoke

San Jose

Fresno

Evansville

Ring 75 (2)

Ring 85 (1)

Jefferson City

Salinas

Warrensburg

Carbondale

Ring 12 (15)

Madisonville

Franklinton

Wichita

Raleigh

Bakersfield

Winston-Salem

Cable Head

Las Vegas

Ring 124 (1)

San Luis Opbispo

Greeneville

Southern Pines

NASHVILLE

Santa Maria

Charlotte

Knoxville

Hamlet

Asheville

Santa Barbara

Tulsa

Ring 48 (3)

Cheraw

Spartanburg

Ventura

Chattanooga

Van Buren

Camarillo

Burbank

Adelanto

Van Nuys

Covina

Okarche

Little Rock

Los Angeles

RIALTO

Huntsville

Albuquerque

Columbia

Oklahoma City

Ring 83 (17)

Los Angeles

Amarillo

Memphis

Palm Springs

Smyrna

Downey

ANAHEIM

ATLANTA

FAIRFAX

FAIRFAX

Santa Ana

Atlanta

Augusta

Mission Viejo

Oceanside

Pine Bluff

Solana Beach

PHOENIX

Charleston

Claremont

Birmingham

Wichita Falls

San Diego

Bowie

Ring 77 (6)

Plano

Savannah

Las Cruces

Lubbock

Montgomery

Jackson

Longview

FT. WORTH

Shreveport

Tucson

Irving

Dallas

Ring 119 (3)

Abilene

Jacksonville (WTG)

Nogales, AZ

Atmore

Madison

El Paso

Ring 26 (4)

Chipley

Tallahassee

Jacksonville

Nogales, MX

Midland

Ring 47 (8)

Juarex, MX

Pensacola

Mobile

Biloxi

Hammond Jct.

Waco

Daytona Beach

Hearne

Baton Rouge

Houston

Bryan

Lafayette

ORLANDO

NEW ORLEANS

Orlando

Ring 60 (9)

(2 sites)

Ring 54 (13)

Austin

Kissimmee

SATSUMA

Tampa

(2 sites)

San Antonio

Fort Meyers

West Palm Beach (2 sites)

Cable Head

Ft. Lauderdale (2 sites)

Miami (2 sites)

Corpus Christi

Mc Allen

Reynosa, MX


Desktop to desktop l.jpg
Desktop-to-Desktop

Sprint Core

Sprint Core

SprintPOI

SprintPOI

High SpeedRing

CommercialBuilding

B-MANCollectorRing

CO

Cellular

MTSO


Total dwdm deployment l.jpg
Total DWDM Deployment

To Vancouver, BC

Via New Westminster

Blaine

Everett

East Wenatchee

Spokane

SEATTLE

Tacoma

Montreal, QC

Montreal, QC

(UNITEL)

(Stentor)

Helena

Coeur d' Alene

Alburg Springs

Portland

Essex Jct.

Bismarck

Portland

Fargo

Iron Mountain

Billings

Manchester

Salem

North Chelsford

Framingham

Worcester

St. Cloud

Boston

Mansfield

Eau Claire

SPRINGFIELD

Ft. Erie, ON

Syracuse

Eugene

Niagara Falls, ON

Appleton

Albany

(UniTel)

(Stentor)

ST. PAUL

Providence

Niagara Falls

Rochester

Bandon Cable Head

Green Hill Cable Head

BUFFALO

Hartford

Saginaw

New London

New Haven

Binghamton

Bridgeport

Medford

Owatonna

Stamford

Flint

Grand Rapids

White Plains

Hackensack

Shirley Cable Head

Milwaukee

Sparta

Sioux Falls

Windsor, ON

Scranton

Franklin

NEW YORK

Lansing

Erie

Madison

Pontiac

Morristown

Newark

DETROIT

Kalazamoo

Edison

Cleveland

Manasquan

CHICAGO

Trenton

Cedar Rapids

Youngstown

Toledo

South Bend

Manahawkin

Dekalb

Clinton

Sterling

Philadelphia

Harrisburg

PENNSAUKEN

Des Moines

Redding

Pittsburgh

AKRON

Sioux City

Mansfield

Wilmington

Tuckerton

Auburn

Fostoria

Hammond

Hagerstown

Pleasant Hill

CHEYENNE

Reno Jct.

Baltimore

Worthington

Grand Island

RELAY

Chico

OMAHA

Columbus

Martinsburg

OROVILLE

Reno

Dayton

Peoria

Lafayette

Bloomington

Point Arena

Salt Lake City

WASHINGTON

Indianapolis

Chillicothe

Lincoln

ROACHDALE

Rancho

Sacramento

Cincinnati

Manassas

Cordova

Walnut Creek

Denver

Sciotoville

Fredericksburg

Champaign

San Ramon

Springfield

Charleston

Charlottesville

Terre Haute

Oakland

STOCKTON

Ashland

Huntington

Richmond

KANSAS CITY

Lynchburg

San Francisco

Vincennes

Modesto

Lawrenceville

Lexington

Colorado Springs

Newport News

Topeka

Burlingame

Louisville

St. Louis

Palo Alto

Roanoke

San Jose

Fresno

Evansville

Jefferson City

Salinas

Warrensburg

Carbondale

Madisonville

Franklinton

Wichita

Raleigh

Bakersfield

Winston-Salem

Cable Head

Las Vegas

San Luis Opbispo

Greeneville

Southern Pines

NASHVILLE

Santa Maria

Charlotte

Knoxville

Hamlet

Asheville

Santa Barbara

Tulsa

Cheraw

Spartanburg

Ventura

Chattanooga

Van Buren

Camarillo

Burbank

Adelanto

Van Nuys

Covina

Okarche

Little Rock

Los Angeles

RIALTO

Huntsville

Albuquerque

Columbia

Oklahoma City

Los Angeles

Memphis

Amarillo

Palm Springs

Smyrna

Downey

ANAHEIM

ATLANTA

FAIRFAX

FAIRFAX

Santa Ana

Atlanta

Augusta

Mission Viejo

Oceanside

Pine Bluff

Solana Beach

PHOENIX

Charleston

Claremont

Birmingham

Wichita Falls

San Diego

1

Bowie

Savannah

Plano

Las Cruces

Lubbock

Montgomery

Jackson

Longview

FT. WORTH

Shreveport

Tucson

Irving

Dallas

Abilene

Jacksonville (WTG)

Nogales, AZ

Atmore

Madison

El Paso

Chipley

Tallahassee

Jacksonville

Nogales, MX

Midland

Juarex, MX

Pensacola

Mobile

Biloxi

Hammond Jct.

Waco

Daytona Beach

Hearne

Baton Rouge

Houston

Bryan

Lafayette

ORLANDO

NEW ORLEANS

Orlando

(2 sites)

Austin

16 

Kissimmee

SATSUMA

Tampa

(2 sites)

San Antonio

Fort Meyers

40 l

West Palm Beach (2 sites)

Cable Head

Ft. Lauderdale (2 sites)

> 80 l

Miami (2 sites)

Corpus Christi

Mc Allen

Reynosa, MX




Switching integration l.jpg
Switching Integration

Voice

DMS

Data

FR

TRANSPORT

IP

Internet

SWITCHING

SWITCHING

TRANSPORT


Softswitch environment l.jpg
Softswitch Environment

SCP

SCP

SCP

SCP

High Speed

HP OC

HP OC

STP

STP

MGC

MGC

MGC

MG

MG

MGC

MGC

MG

MG

MG

F-Links from MGC to HP OC

A-Links from MGC to STP

A-Links from STP to HP OC


Slide10 l.jpg

Commercial ATM Deployment

2

2

3

2

2

1

2

3

2

2

4

3

3

3

2

3

5

2

4

3

3

2

Seattle

Redmond

3

10

Tacoma

Rochester, NY

Buffalo, NY

Springfield

Woburn, MA

14

10

8

Walpole, MA

10

St Paul

2

Wallingford, CT

Detroit

1

10

Manhattan, NY

Lansing

24

Westbury, NY

Pennsauken, PA

Cheyenne

Summerset, NJ

Teterboro, NJ

4

Chicago

Philadelphia, PA

6

14

1

Pennsauken

20

Omaha

Sacramento

2

8

11

28

Elkridge

Stockton

11

2

10

1

4

Akron

Santa Rosa

2

Beltsville, MD

9

20

2

2

Denver

Roachdale

San Jose

Hanover, MD

Kansas City

2

Brisbane

Las Vegas

6

14

Oakland

2

10

Charlotte

Los Angeles

2

4

Rialto

Ontario

12

Nashville

Irvine

Albuquerque

2

Phoenix

24

24

Burbank

1

10

8

2

San Diego

San Diego 2

Atlanta

1

2

Pearl City

2

24

2

Ft Worth

ATM NEC M20 40G Core

ASX-4000 Edge Switch

Vector Edge Switch

ATM Edge Switch (Sprint PCS Locations)

PSN2 Switch - Passport 7480

PSN2 Switch - Passport 15000

13

New Orleans

Satsuma

6

14

10

Orlando



Slide12 l.jpg

2002 Europe Sprint IP Backbone Network

Oslo

Stockholm

Dublin

Noerre Nebel

Copenhagen

Springfield / Boston

London

Amsterdam

New York

Hamburg

Bude

Pennsauken, NJ

Brussels

Manasquan, NJ

Frankfurt

Paris

Tuckerton, NJ

Munich

Relay / DC

Milan

Raleigh

Atlanta

STM 64 (OC-192)

STM16 (OC-48)

STM4 (OC-12)

Internet Transport Node

Orlando

Landing Station


2002 asia sprint ip backbone network l.jpg

Seattle

Tacoma

To Chicago, Kansas City, New York

Bandon

Nedonna Beach

PAIX

To Cheyenne

Stockton

Tokyo

Kite-Ibaraki

Pt. Arena

To Pennsauken

Seoul

Aligura

San Luis Obispo

To Relay/DC,

Chicago

Maruyama

Los Osos

Pusan

Chikura

San Jose

Chinju

Shima

To Fort Worth

Anaheim

Taipei

Hong Kong

Toucheng

Hawaii

Fangshan

Lanta Island

Tseung Kwan

Kahe Point

Spencer Beach

Penang

Singapore

Suva

Internet Transport Node

Landing Station

Future Location

Brookvale

Auckland

Alexandria

Sydney

2002 Asia Sprint IP Backbone Network


Slide14 l.jpg

IP Class of Service Network Diagram

VPN

VPN

ER

ER

PR

PR

BR

BR

Classification and prioritization occurs at customer’s premise router

Classification and prioritization occurs at Sprint’s edge router

Sprint IP Backbone

No classification or prioritization on the Sprint IP Backbone.

Bi-directional prioritization on the local access facility

PR: Premise Router

ER: Edge Router

BR: Backbone Router


Sprint ip class of service offering l.jpg
Sprint IP Class of Service Offering

  • Allows Dedicated IP and IP VPN customers to make efficient use of existing bandwidth by ensuring delivery of time-critical applications

  • Assigns different traffic types to 4 priority classes based upon packet importance

  • Resources are allocated to each class by the customer


Ip class of service mechanisms l.jpg
IP Class of Service Mechanisms

  • Sprint’s IP Class of Service offering is based on DiffServ technology for traffic classification and uses Priority Queuing and Class Based Weighted Fair Queuing for traffic scheduling.

Class A

Premium Traffic

Priority Queue

Class B

Critical Traffic

Customer Access Link

Class Based Weighted Fair Queuing

Class C

Business Traffic

Class D

Standard Traffic


Build philosophy l.jpg
Build Philosophy

  • Zero Drop, Speed-of-Light-like Latency, Low Jitter

  • Side-effect of provisioning approach

The job of the core is to move packets,

not inspect or rewrite them.


Slide18 l.jpg

Support Philosophy: Three S’s

  • Simple

    • NOC staff can operate it

  • Sane

    • Don’t have to be a PhD to understand and troubleshoot the routing

  • Supportable

    • It if takes twelve hours to figure out what’s wrong, something isn’t right


Traffic engineering l.jpg
Traffic Engineering

  • Aggregated Traffic in a core network (> = OC48) is “uncorrelated”, that is, not self-similar

    • “Impact of Aggregation on Scaling Behavior of Internet Backbone Traffic”, Zhi-Li Zhang, Vinay Riberio, Sue Moon, Christophe Diot, Sprint ATL Technical Report TR02-ATL-020157 (http://www.sprintlabs.com/ipgroup.htm)

      • So you can actually provision to avoid queuing in a core network

  • With proper network design, you can get within 3% of optimal (utilization)

    • “Traffic Engineering With Traditional IP Routing Protocols”, Bernard Fortz, Jennifer Rexford, and Mikkel Thorup


Slide20 l.jpg

Convergence/Restoration

  • MPLS Approach

    • Fast Reroute, with various kinds of protection

    • O(N^2*C) complexity (C classes of service)

    • B/W must be available

  • Sprintlink approach

    • Simple network design

    • Equal cost multi-path/IS-IS improvements for sub-second convergence

    • BTW, what is the (service) convergence time requirement?

  • Note: Recent work shows that FIB download dominates service restoration time, so...


Slide21 l.jpg

L3 Transport/VPN

  • MPLS Approach

    • RFC 2547 (MPLS/BGP VPN)

  • Sprintlink Approach

    • CPE Based and VR based (network based)

  • Interestingly, although many customers seem to be asking for 2547 VPN, there is no artifact that will allow users to distinguish between a VR VPN and a 2547 VPN

    • See also “Integrity for Virtual Private Routed Networks”, Randy Bush and Tim Griffin, INFOCOMM 2003

      • Result: 2547 cannot provide isolation (“security”) in the multi-provider (inter-domain) case


Slide22 l.jpg

Closing

  • Load-sharing is done by a per-destination caching scheme

    • I.E. traffic flows take only ONE best path across the SprintLink Network

      • Minimized packet re-ordering, reduced fiber-path induced jitter.

  • IP traffic growth is still doubling ~yearly

    • Easier to provision the network to ensure no congestion in the core, more cost-effective than fancy queuing in the core.

    • Simple means reliable, fixable, and more stable.

  • Queuing only needed at the edge, where packet/frame sizes are ‘large’ in proportion to the ingress bandwidth.

    • Stays with Simplicity Principle

    • Frees up Core routing system’s resources


Moving up the value chain l.jpg
Moving up the Value Chain

Sprint’s quickest and most differentiated path to the pinnacle of the customer value chain.

Network & Systems Management

Transport

Access

Applications

Content

  • Unlimited capacity

  • Service consistency

  • Virtually unlimited bandwidth

  • End-to-end managed solution

  • CPE

  • New generation of applications

  • Anything is possible


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