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LAGGY CGC BOARD! What's up Arch?

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WorldCom Glitch Causes Internet Delays

Botched Software Upgrade At UUNet Unit Blamed

 

a Washington Post Staff Writer

Friday, October 4, 2002; Page E01

 

Internet traffic across the nation snarled yesterday, slowing or stalling access to Web pages and e-mail messages for millions of users, because of a failed software upgrade on WorldCom Inc.'s network.

 

WorldCom's Ashburn-based UUNet unit, which carries roughly half the nation's Internet traffic, was reprogramming software for its routers yesterday morning when the network began having problems. About 20 percent of the company's customers, and an unknown number of Internet users outside WorldCom's network, were affected by the outage until service was restored in the late afternoon, said WorldCom spokeswoman Jennifer Baker.

 

The slowdown was the biggest in years, according to analysts and Internet service providers, and was magnified because WorldCom is a major backbone provider to other Internet services, as well as to businesses and individuals.

 

Baker said WorldCom technicians in several locations were installing software on the network's routers -- equipment that directs data from one location to another -- around 8 a.m. Eastern time when failures and slowdowns began. It took until late afternoon before the traffic began returning to normal levels, and automated online monitors showed glitches in some circuits into the evening.

 

The Internet will operate even if a major provider's lines fail. But providers are dependent on one another, so if the network from a busy route such as New York to Boston gets disrupted, traffic is forced through smaller, alternative channels that are less equipped to handle a high volume of traffic, said Seth Libby, an analyst with the Yankee Group market research firm in Boston.

 

AT&T Corp. had trouble all day handing off traffic to and from UUNet's network. AT&T's customers experienced delays downloading Web sites or were unable to access sites at all, said David Johnson, an AT&T spokesman.

 

"I would not say this is a common event, and I don't remember one this large or this significant," he said.

 

Network engineers at Cable & Wireless USA Inc. noticed as the workday started yesterday that more traffic was getting rerouted through other exchanges, jamming less-traveled routes, said Chad Couser, a Cable & Wireless spokesman. Though it didn't significantly affect the flow of traffic in Cable & Wireless's network, it did disrupt Internet access at the company's Washington public relations agency, he said.

 

"It's another reason why companies need to get contingency plans," so that traffic can get rerouted when these outages happen, Couser said.

 

Statistically, network outages occur at a lower rate than they did a decade ago, when construction workers routinely cut lines and disrupted traffic about once a month, said Herschel Shosteck, founder of industry research firm the Shosteck Group in Wheaton. But rival companies have since laid more fiber-optic cable in the ground to create parallel networks, he said.

 

"The networks have become so robust it's surprising that it still does happen," he said.

 

Public concern over outages like yesterday's is heightened because of the poor financial health of major carriers such as WorldCom, Global Crossing Ltd. and Williams Communications Inc., although the network outage was unrelated to WorldCom's bankruptcy, the spokeswoman said.

 

It's unlikely that a major problem such as this one was caused by a lack of personnel, said Frank Dzubeck, president of Washington-based consultancy Communications Network Architects Inc.

 

"Networks aren't dependent on a group of human beings anymore; computers generally talk to one another" and run networks' day-to-day operations, he said.

 

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