Company Confidential

Breakthrough Solutions for Friction-Free Networking

Introducing

Company Confidential 25 September 2000 (Slide 2 )

Our Mission

Enable rapid, profitable network growth and service provisioning

by eliminating friction at the network edge.

Company Confidential 25 September 2000 (Slide 3 )

ATMAggregation

CES

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ATM Switch

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DSL Links

Leased Lines

Cable Access

Internet Access

Legacy I/Fs

IP/MPLSBackbone

IP/MPLSBackbone

Frame RelaySwitch

ATM Backbone

ATM Backbone

Routers

The Network Edge

Access

Services & Aggregation

Backbone/CoreEdge

IP Service Switch

Company Confidential 25 September 2000 (Slide 4 )

Friction-Constrained Networking

Friction at the network edge inhibits rapid, profitable network growth and service

deployment.

25 September 2000 (Slide 5 ) Company Confidential

OpticalBackbone

OpticalBackbone

Wireless/9600Kbps

DS0/64Kbps

DS1/1.5Mbps

DS3/45Mbps

OC-3/155Mbps

OC-12/622Mbps

OC-48/2.5Gbps OC-192

/10 Gbps

9600 Kbps 10 Gbps

Intelligence + Friction

Edge devices are the primary source of network intelligence.But they are also the primary source of network friction.

Friction at the network edge inhibits rapid, profitable network growth and service provisioning.Friction at the network edge blocks the benefits of optical networking.

Source: Netforecast

Company Confidential 25 September 2000 (Slide 6 )

Sources of Friction

Today’s network edge has too many boundaries:

Speed and performance boundariesProtocol boundariesManagement boundariesGeographic boundaries

Boundaries create friction:Implementation and integration frictionProvisioning frictionOperational frictionCost frictionInvestment protection friction

Company Confidential 25 September 2000 (Slide 7 )

Breakthrough Engineering

Until now, edge solutions have been constrained by technical tradeoffs.Gotham Networks combines state-of-the-art technology with breakthrough engineering to eliminate the tradeoffs and remove friction from the network edge.

Performance Intelligence

Cost

Company Confidential 25 September 2000 (Slide 8 )

Friction-Free Networking

Engineering breakthroughs from Gotham Networks remove friction from the network edge:

Network Simplicity – The One-Hop EdgeRapid Service Provisioning – VNode ManagementExtraordinary Scalability - Switchless Switch

ArchitectureDeployment Flexibility – POP Outside the Box

Company Confidential 25 September 2000 (Slide 9 )

Introducing…

GN 1600 Switchless Switch™SmartService™ SoftwareGotham Element Management System (GEMS™)

Company Confidential 25 September 2000 (Slide 10 )

GN 1600 Switchless Switch™Create a wide-portfolio of services (switch, route, cross-connect)

Fast, “One-Touch” provisioning of circuits and services

Guarantee Service Levels and response time

Collapse the backbone to provide One-Hop, One-Switch access to the Optical Domain

NEBS Level-3 Compliant3 chassis per rack16-slot, 40 Gbps, Expandable to 600 Gbps

Company Confidential 25 September 2000 (Slide 11 )

Switchless SwitchNo Performance Boundaries

40 Gbps> 500,000 data

flows

600 Gbps> 7,000,000 data

flows

Extraordinary scalability across a single VNode

Pay-as-you grow scalability

Guaranteed QoS/SLA compliance

Company Confidential 25 September 2000 (Slide 12 )

SmartService™ Software

Any ServiceIP/MPLSVirtual Private NetworkVirtual RouterVirtual LANTransparent LANFrame RelayATM, including CESService Cross-Connect

Any Port12-Port Ch DS3 Card (N X DS0)16-Port OC-3 Card4-Port OC-12 Card4-Port OC-48 Card16-Port 10/100 Ethernet Card8-Port Gigabit Ethernet Card1-Port OC-192 Card1-Port WDM Card (4 Colors)

Company Confidential 25 September 2000 (Slide 13 )

Extraordinary Scalability

Interfacesper Shelf

Interfaces per (7 ft) Rack

Interfaces per System

10 / 100 Mbps Ethernet 256 768 3,584

Gigabit Ethernet 64 192 896

DS / 1 (via Channelized DS / 3) 5,376 16,128 75,264

DS / 3 192 576 2,668

OC – 3 256 896 3,584

OC – 12 64 192 896

OC – 48 32 96 448

OC – 192 8 24 112

Data Flows 512,000 1,536,000 7,168,000

Company Confidential 25 September 2000 (Slide 14 )

Backplane

Traditional Switch The Switchless Switch

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Common Control Cards

Linear Cost/Performance Growth

Central Switch Fabric Distributed Control &

Switching

Company Confidential 25 September 2000 (Slide 15 )

DSL Links

Leased Lines

Cable Access

Internet Access

Legacy I/Fs

IP/MPLSIP/MPLS

ATM Backbone

ATM Backbone

OpticalDomain

OpticalDomain

The One-Hop EdgeNo Protocol or Speed Boundaries

DS0 to OC-192IP, MPLS, ATM, FR

No barriers to the optical

domain

Company Confidential 25 September 2000 (Slide 16 )

VNode ManagementNo Management Boundaries

Service Provider sees one virtualized edge node.

VLAN/VPN for cost effective service deployment

One-touch end-to-end provisioning

Company Confidential 25 September 2000 (Slide 17 )

GEMS™

Point-and-click, end-to-end VNode provisioning Open APIs for easy integration with existing OSS implementationsRobust, comprehensive statistics for performance and SLA monitoringCall Detail Records (CDRs) to support usage-based revenue generation

Customer Profile DB

Other DB

Existing OSS

CORBACLICDRSNMP

LDAP

PerformanceMonitoring

SecurityAccountingFault

ManagementConfigurationManagement

Service Provider ViewService Provider ViewWholesaler Customer

Gotham API Gotham Gateway

Company Confidential 25 September 2000 (Slide 18 )

POP Outside the BoxNo Geographic Boundaries

VNode support across chassis, racks or POPs

Expansion using high speed, industry standards

Rapid deployment in new regions

Company Confidential 25 September 2000 (Slide 19 )

Backplane

Traditional Switch Gotham Expansion Option

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Gotham VNode Expansion

Common Control Cards

Central Switch Fabric Distributed Control &

Switching

Company Confidential 25 September 2000 (Slide 20 )

About the Company

Founded July 1999Located in Acton, Massachusetts

Currently 100+ employees, with experience inCarrier-class networkingHigh-speed integrated circuit designDistributed system architecture

Secured $33M in 2 rounds of funding Charles River VenturesBessemer Venture PartnersCrescendo Ventures

Patent pending technologyScalable switching architectures

Company Confidential 25 September 2000 (Slide 21 )

Friction-Free Networking™

Switchless Switch one-hop, network simplicityVNode one-touch service provisioningSwitchless Switch pay-as-you-grow scalabilityPOP-outside-the-box deployment flexibility

Internet Backbone

Internet Backbone

ATM Backbone

ATM Backbone

OpticalDomain

OpticalDomain

No Compromises

No Boundaries

Company Confidential

15 Discovery WayActon, Massachusetts 01720

(978) 263-6890

www.gothamnetworks.com