To: Darren DeNunzio who wrote (29703 ) 3/8/1998 7:09:00 PM From: Joe Matthew Respond to of 41046
Good Summation Darren. Heres the article in its completion:internetworld.com September 8, 1997 Sprint To Boost Its Backbone Bandwidth Fourfold By Todd Spangler Sprint plans to increase its IP backbone bandwidth fourfold to OC-12 (622 Mbps) links from its current OC-3 (155 Mbps) connections, becoming the latest major Internet backbone provider to announce plans to speed up its network. The move to the higher-speed links will take place over the next year and a half, with Sprint's 10 major hubs upgrading to Cisco Systems Inc.'s new 12000 Series Gigabit Switch Router (GSR) by the end of 1997, according to an announcement last week by Sprint. According to Cisco, the GSR family--to be officially launched later this year--is designed to provide an extremely scalable routing foundation with the capability to support as many as 11 OC-48 (2.4 Gbps) interfaces. By comparison, Cisco's current Cisco 7500 routers are optimized for OC-3 backbones. The first link to run at 622 Mbps is between Anaheim and San Jose, Calif., which has been operational since July, according to Sprint spokesman Charles Fleckenstein. He said the next two links that will be upgraded are between Anaheim and Forth Worth, Texas, and between Relay, Md., and Pennsauken, N.J. Both paths are high-traffic corridors. The company will bring up additional OC-12 connections throughout 1998 where demand indicates the need for them, Fleckenstein added. Sprint also touted the fact that its new network connections will use packet-over-SONET (POS) technology, which is more efficient--with only 5 percent overhead (network routing information)--than competing technologies such as Asynchronous Transfer Mode (ATM) over SONET, which runs with between 20 and 25 percent overhead. Sprint executives declined to disclose the projected cost of the upgrade, although a spokesman said the expense was built into the standard operating budget for the year. MCI is one of several ISPs that run backbones using ATM, which--although it is less efficient than POS--allows for more flexible load balancing, said spokesman Richard Hoskins. SONET, which stands for Synchronous Optical Network, is a fiber-optic transmission system for high-speed digital traffic that can sustain multiple-gigabit-per- second throughput.. But while other ISP backbones--including MCI's and Uunet Technologies Inc.'s--run at OC-12 levels, current networking hardware is limited to OC-3 network interfaces, which cause congestion. "It's like going from a 12-lane highway to a three-lane highway," Fleckenstein said. With the Cisco 12000 routers, Sprint can offer wire-speed throughput on OC-12 lines, he noted. Sprint joins the ranks of other backbone ISPs that are in the process of increasing capacity. MCI is currently upgrading its IP backbone to dual OC-12 links, which will be completed in October, the company said. Uunet, for its part, said it will complete an upgrade to its major connections to OC-12 by the end of this month. And in July, PSINet said it will expand its network capacity over the next two years to run on OC-48 (2.4 Gbps) optical fiber connections. MCI's Hoskins said that the trend of major backbone providers building up networks is excellent news for the Internet in general. "As more providers do that, there's more bandwidth for everyone on the Internet," he said.