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By Lynn Haber
Network World, 03/26/01

Here's a look at the 15 most important people, inventions and events that shaped our networked world.

The personal computer

Without the PC, networking as we know it would not exist. More specifically, the growth of the commercial PC market in the early 1980s made it affordable to put powerful computing devices on the desktop. This created user demand to distribute processing power to departments, buildings and far-flung geographic locations.

Hello PC. Goodbye dumb terminal. Goodbye minicomputer. "With the move away from the mainframe, the PC helped facilitate highly dispersed networking with PCs running mission-critical applications for the enterprise," says Jay Pultz, vice president and research director at Gartner Group.

The LAN/Ethernet

A multipoint data communications system with collision detection, Patent No. 4,063,220 with the U.S. Patent & Trademark Office, is more widely known as Ethernet. Reliable, and easy to install and set up, Ethernet enabled companies to rapidly interconnect computers. "From a price/performance view, this LAN technology single-handedly took networking to a new level," says Dave Neil, vice president and research director at Gartner Group.

What Robert M. Metcalfe and his associates at Xerox Palo Alto Research Center began more than 25 years ago continues to evolve today.

The first published standard for 10M bit/sec Ethernet came in 1985, followed by 100M bit/sec (Fast Ethernet), 1000M bit/sec (Gigabit Ethernet) and, a work still in progress, the proposed IEEE 802.3ae standard for 10G Ethernet - which is poised to propel Ethernet beyond the LAN, and into the metropolitan-area network and WAN.

The breakup of AT&T

In January 1984, Ma Bell, as she was known, was laid to rest. The New Year saw the formation of a new AT&T and seven regional telephone holding companies, known as the regional Bell operating companies. The breakup of AT&T, the national telephone monopoly, was the end of the road for a government antitrust suit against the company that began in 1974, in which AT&T agreed to divest itself of its 22 wholly owned Bell operating companies that provided local telephone service.

Whichever way you look at it - for better or for worse - the telecom industry has never been the same.

Telecommunications Act of 1996

What the breakup of AT&T never achieved, the Telecommunications Act of 1996 was supposed to rectify by creating the concept of competition in the local loop. Liza Draper, principal at McQuillan Ventures, a network technology consulting company, says the telecom act was the single most important piece of legislation related to telecommunications.

"It changed the landscape for service providers and created the opportunity for venture-backed start-ups to sell equipment into the marketplace," she says.

Rosemary Cochran, an analyst at Vertical Systems Group, adds that the law was a bellwether spurring the competitive local exchange carriers, DSL services, and a slew of other cable and telecom companies in an environment reminiscent of the Wild West.

The router

The router let companies establish more complex data networks. "I can't even imagine distributed networking without the router,'' Gartner's Neil says.

Before TCP/IP, the realm of networking existed in the world of multiprotocols - SNA, X.25, DECNet.

With the advent of TCP/IP, the network industry saw the demise of time division multiplexing (TDM), which firms used in their attempts to integrate voice and data. "But TDM didn't lend itself to IP, and the circuit/packet issue became important," Cochran says. For new applications, desktop networking and LAN internetworking, the multiplexer didn't cut it.

Cochran notes that in 1986, the router market was less than $100 million. Today, it's a multibillion dollar market that continues to increase as networks run more data than voice over their networks.

Packet technologies

In packet technologies, IP or anything else, voice and data are treated as a stream of packets. With the introduction of packet technologies, the network industry saw a change in the types of customer premises equipment (CPE) and services that carriers could deliver. The lines between public and private networks also began to blur.

Sold as a service, frame relay provided a way for carriers to drum up new enterprise business. This packet technology was well-suited to LAN traffic, and the industry saw businesses route LAN traffic onto frame relay networks. Many organizations replaced leased lines with frame relay services. The carriers began to provide businesses with CPE that the carriers also offered to manage.

IP

Considered the great unifier that changed the way people thought about protocols, IP today is known as the protocol of the Internet. "IP has become the universal protocol, the interoperability protocol," says Frank Dzubeck, president of Communication Network Architects. As IP became increasingly popular, a dark shadow fell over Open Systems Interconnection and IBM's SNA. "There was no longer any need for them," he says.

Going forward, industry watchers expect there to be one protocol - IP. Part of the beauty of IP is that it is associated with a different way of thinking. "IP isn't associated with one company, nor does it come from the normal standards body," Neil says. Instead, IP developed on a distributed ad hoc basis to become what it is today.

Birth of Cisco

An $18.9 billion company, Cisco is a worldwide leader for networking. "Cisco is the company that brought marketing to the network space," says Kathryn Korostoff, an analyst at Sage Research.

Prior to the advent of Cisco, which incorporated in 1984 and shipped its first product in 1986, it was accepted practice for corporations to make buying decisions based on technology with no emotional bond to the purchased product. "Cisco has built a brand name as the safe choice with which you can't go wrong," Korostoff says.

Fiber-optic networks

For starters, fiber-optic networks increased the capacity and reliability of networks, particularly long-distance networks. This technology also flattened out the cost of communications. "It used to be that long-distance calls were more expensive than local calls," Gartner's Pultz says. "Today, in large part because of fiber-optic networks, it's almost as cheap to go long-distance as it is to go local."

One of the key technologies in fiber-optic networking is the laser. With the advent of the reliable, low-cost laser, which is how signals are sent over optical fibers, you can have more of them. "The inexpensive laser created fiber-optic networking," Dzubeck says. There was a time when lasers used to be a big dish and cost $50,000 to $100,000. "Today, they cost $5,000 to $10,000," he says.

With the advent of faster lasers, better filters and amplifiers, the industry is moving toward an all-optical switching environment - the next step in carrier networking.

The Internet

The Internet has changed the world of networking more than anything else. "What it comes down to is that prior to the Internet, it was difficult to access resources over a network," Pultz says. In contrast, having a universal network, and network resources, that anyone can access via a common means, is revolutionary.

The Internet, and related technologies, created the next wave in business - the Information Age, changing forever the way business is conducted worldwide and opening new channels for interbusiness communications as well as business-to-consumer communications.

World Wide Web

In the high-tech industry, ease of use is everything. So when the first Web browser was written in 1990, the popularity of the Internet took off. The Web is a system that lets users interact with documents stored on computers across the Internet as if they were parts of a single hypertext.

Tim Berners-Lee invented the Web in 1990 while working at CERN (the European Organization for Nuclear Research) in Switzerland. The WWW is an Internet-based hypermedia initiative for global information sharing.

Bernie Ebbers

Considered a model of people who have shaken up the industry, Bernard J. Ebbers, CEO of WorldCom, was an outsider, a nobody, in telecom. Today, he is considered one of the industry's most powerful people. With revenue of more than $37 billion and approximately 77,000 employees based in more than 65 countries, WorldCom is an industry leader in global communications.

Known as the "Man from Mississippi," although a Canadian by birth, with a degree in physical education, not an M.B.A., Ebbers built WorldCom from the ground up through a strategy of acquisition and consolidation that began in the early 1980s. His ultimate coup was the acquisition of MCI (the No. 2 provider) by WorldCom (the No. 4 provider at the time).

"It was a stunning event. Over the years, Ebbers has demonstrated how an entrepreneur with an idea could change the structure of an industry," Neil says.

Java

Sun's Java is a programming technology that revolutionized how applications are developed and processed. Known for its write once, run-anywhere capability, Java won favor in the marketplace by making it easy to build and deploy applications that can run on any network, on any operating system.

Java is significant because it allowed network developers to start moving pieces of code around the network, executing on different devices.

The beauty of Java is that it helps reduce the time and costs associated with application development given its platform and device independence.

The availability of capital

The unleashing of capital over the past decade has been significant for the networking industry, opening the floodgates for countless start-ups.

Remember the corporate funding of skunk works and spinoffs? "That's back when it took a start-up two years to raise $20 million and another year to move ahead," Vertical's Cochran says. Now by comparison, it's pretty easy for start-ups to get cash. However, more recently with the sparkle on the high-tech industry growing dim in the world markets, networking companies, among others, are seeing a tightening of the purse strings.

"It will impact the markets, but I think it's a good thing because we'll see more quality," Cochran says. "Ultimately, the cream always rises to the top."

Loss of privacy

If the ultimate objective of networking is to achieve "anywhere, anytime" communications - perhaps the single greatest advance of networking - something has got to give. Is that something a loss of privacy?

In the corporation, the requirement to be reachable - by telephone, cell phone, pager, e-mail - has become accepted work practice. But what are the implications - health, turmoil, aggravation - when we come out of the other side of this great advance.

Clearly, there are advantages to always being in touch - the automobile industry can send information or help to drivers on the road, industry can speed the supply chain, business communications can occur without skipping a beat.

Less explicit, however, are the implications on individuals and cultures, as pervasive networking follows you - everywhere.

Related links

Haber is a freelance writer living in Massachusetts. She can be reached at lthaber@mediaone.net.

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