News Release

Cisco Systems Announces Second Cisco Powered Network Service Provider Partner Pavilion at NetWorld+Interop '99 Las Vegas

With 20 leading Cisco Powered Network Service Providers
May 12, 1999

With 20 leading Cisco Powered Network Service Providers Exhibiting

LAS VEGAS, NV -- May 12, 1999 -- Cisco Systems, Inc. (NASDAQ: CSCO) announces the second Cisco Powered Network Service Provider Partner Pavilion at the NetWorld+Interop '99 in Las Vegas. Twenty leading service providers who offer services built on a Cisco infrastructure will exhibit innovative network solutions in booth number 7169 - next to Cisco's main N+I booth.

"We're excited to continue this successful joint marketing program at N+I this spring," said Larry Lang, Cisco's vice president of service provider marketing. "Because service providers play an important role in meeting our customers' end-to-end networking needs, we developed the Cisco Powered Network program to help businesses choose the service provider that's right for them. By offering a pavilion devoted to Cisco Powered Network program members at N+I, the show attendees will not only be able to learn about Cisco's industry-leading technology, but also about innovative, Cisco-based network services offered by these leading service providers."

Members of the Cisco Powered Network program are service providers that provide high-quality, end-to-end network solutions built on a Cisco infrastructure. Together, Cisco and Cisco Powered Network service providers are helping to create a New World communications infrastructure composed of integrated high-speed data, Internet access, voice and video services.

Cisco Powered Network program members exhibiting in the Partner Pavilion are:

@Work on the @Home Network
Work, the business division of @Home Network, leverages a dual-channel, OC-48, 5-Gbps Tier-1 IP backbone and distributed information architecture to provide the widest array of high-speed, dedicated connectivity options, Web hosting, co-location, multi-homing, backup connections, VPN, and value-added business applications.

AboveNet Communications, Inc.
AboveNet is a premier provider of co-location and Internet connectivity solutions for high-bandwidth and mission-critical applications. AboveNet's unique one-hop network design delivers the fastest, most scalable, and reliable connections to the Internet.

CAIS Internet
CAIS Internet, headquartered in Washington, D.C., is one of the original tier-one ISPs. It operates a nationwide, fully redundant, clear-channel DS3/OC3 ATM network. CAIS delivers a full-range of high-speed Internet services, including CAIS HyperDSL, the latest in digital subscriber line technology.

Covad Communications
Covad Communications is a high-speed Internet and network access provider offering digital subscriber line (DSL) services to Internet service providers and enterprise customers. Covad was the first to deliver DSL-based services to the market and continues to be the leading competitive carrier.

Digital Island
Digital Island has designed a global IP applications platform to deploy business-critical applications, using an intelligent network. Digital Island's solutions allow customers to reach new markets faster, with the reliable performance necessary to support the most demanding E-business challenges.

Electric Lightwave, Inc.
Electric Lightwave is an integrated communications provider offering data, Internet access solutions, and prepaid voice services to businesses nationwide. In the Western United States, the company is a full-service provider offering local and long distance telephone service, videoconferencing, and broadband transport services.

Enron Communications, Inc.
Enron Communications' data-centric, national Pure IP backbone, the Enron intelligent network, delivers high-quality, high bandwidth business information and applications. Enron's enabling technology allows a new generation of ePowered application services to revolutionize communications in the 21st century.

EQUANT Network Services
EQUANT is a leading provider of seamless international data network services to multinational businesses. The company is a single source for global desktop communications, providing managed data network services, network design and integration, equipment installation, maintenance, support, and software development services.

Exodus Communications
Exodus Communications is a leading provider of Internet system and network management solutions for enterprises with mission-critical Internet operations. The company manages Internet Web sites and its network infrastructure from eight US data centers and a server hosting facility in London.

Frontier GlobalCenter
As a leader in digital communications, Frontier GlobalCenter provides content distribution and high-speed Internet access to leading Internet-centric businesses. The Frontier Optronics network offers unrivalled capacity, scalability, and the high reliability that comes with being a Cisco Powered Network.

GTE Internetworking
GTE Internetworking provides dedicated Internet access via a high capacity backbone, both engineered and delivered with the use of Cisco networking equipment.

ICG Communications, Inc.
ICG Communications, Inc. provides a full range of dedicated Internet access solutions, backed by SLAs and IP voice solutions. ICG Communications also offers long distance and access products.

Intermedia Communications
Intermedia Business Internet(SM) (formerly DIGEX Business Internet Solutions) is a first-tier, national Internet carrier featuring SuperTSM for load-balanced, multiple T1 access using Cisco Express Forwarding (CEF).

InterNAP Network Services
InterNAP supplies the world's fastest and most reliable Internet connectivity to businesses and Internet service providers nationwide. InterNAP has developed Private Network Access Points (P-NAPs(SM)) and Assimilator software that orchestrate the routing and security of mission-critical applications, bypassing traffic congestion on the Internet.

IXC Communications, Inc.
Eventually, everyone on the Internet will be a Gemini. Find out why at the live demo of IXC Communications' Gemini2000 network, the network to which all future networks will be compared.

Rhythms NetConnections Inc.
Rhythms provide high-speed networking solutions for remote access to private networks and the Internet. Rhythms provide high-performance, "always on," secure networking solutions, including local connections ranging from 128 kbps to 7 Mbps (approximately 125 times the speed of today's fastest dial-up modem).

Sprint ION is the world's first fully integrated, all-distance network that can reliably handle all your voice, video, data, fax and Internet communications over a single connection. But more importantly, Sprint ION redefines collaboration, linking your employees, suppliers and customers.

TeleMedia International USA, Inc. (TMI)
TMI, a wholly owned subsidiary of Telecom Italia, operates a proprietary global network with more than 100 points of presence in 45 countries. TMI offers international managed lines, DATAFAST Frame Relay, MondoNet IP VPN, messaging, IVPN, videoconferencing and outsourcing services.

TelePacific Communications
TelePacific offers state-of-the-art data and Internet access that efficiently combines access to multiple carrier backbone networks.

As a strategic Cisco Partner, U S WEST has proven post-sales technical support expertise for Cisco's most advanced products. The company provides a family of high-speed data communications services.

About NetWorld+Interop

NetWorld+Interop provides networking, Internet and telecommunications professional buyers with a uniquely comprehensive forum for education and hands-on products and services in order to make critical purchase decisions. NetWorld+Interop affords buyers from enterprises, carrier/service providers, and resellers/integrators the opportunity to experience live technology demonstrations first-hand. It's this focus on advanced, multi-vendor, multi-protocol, multi-service interoperability technologies and solutions that make NetWorld+Interop the definitive networking event. NetWorld+Interop is produced by ZD Events, the events group of Ziff-Davis (NYSE:ZD).

Cisco Systems

Cisco Systems, Inc. (NASDAQ:CSCO) is the worldwide leader in networking for the Internet.

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