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ZDNet eWEEK Sprint puts backbone flow under surveillance
Aiming to provide increasingly higher-quality IP and Internet services at lower prices, Sprint Corp. has begun its most comprehensive study to date of traffic behavior on its Internet backbone.
After a year of developing its own test equipment, the carrier late last month began collecting data at its San Jose, Calif., Internet POP (point of presence), the first of many sites slated for testing.
Sprint plans to use the data from the testing, called the Internet Measurement Study, to ensure that its network can handle ever-increasing customer traffic volume and to discover which network monitoring tools will be needed in future network equipment.
"Very little is known about the detailed behavior of Internet backbones," said Bryan Lyles, chief scientist at Sprint, in Kansas City, Mo. "Very fine-grained studies are what we need to make rational decisions on the equipment that goes into the network -- even the standards that go into it."
Sprint hopes the multimillion-dollar, multiyear study will enable it to keep its equipment costs as low as possible and ensure that its network delivers optimal performance.
"The goal is to make sure we make the best use of capital and the other resources we put into the network and to keep our customers happy," Lyles said.
Performance, performance, performance
As the Internet's importance to a company's bottom line increases, users expect ISPs (Internet service providers) or other data carriers to meet increasingly stringent service performance goals.
At Quebecor Printing (USA) Inc., which is installing an IP-based VPN (virtual private network) at its many locations, "class of service will include bandwidth allocation and prioritization for certain applications," said Terry Bush, vice president of data communications, in Greenwich, Conn.
At its bigger printing facilities, the company is installing multiple 1.5M-bps circuits to handle growth in its data traffic because IP bandwidth is more efficient and flexible in a VPN than in more conventional network designs, Bush said. Nevertheless, Quebecor demands service levels that rival private network solutions and has a service-level agreement that specifies zero packet loss and a round-trip, coast-to-coast network delay of less than 75 milliseconds, Bush said.
Sprint isn't alone among carriers and ISPs in its quest to improve Internet service. For example, "2001 will probably be the last year that we will buy narrowband switches," said Fred Briggs, chief technical officer at WorldCom Inc., in Clinton, Miss.
Pentium� II Processor Performance Indicators - SPECint95 under UNIX
Monitoring Performance and System Tuning - USAIL. Good.
Monitoring Performance with iostat and vmstat
UNIX Performance Management It doesn t have to cost a fortune - Jaqui Lynch Boston College. slides only.
Other Cockcroft columns at www.sun.com
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The Last but not Least Technology is dominated by two types of people: those who understand what they do not manage and those who manage what they do not understand ~Archibald Putt. Ph.D
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Last modified: February 28, 2008
