To: KC~ who wrote (26584 ) 6/23/1999 9:29:00 PM From: Glenn D. Rudolph Read Replies (3) | Respond to of 77400
UUNET to ditch ATM for MPLS Will replace FORE switches in its core network. By DENISE PAPPALARDO Network World, 06/22/99 FAIRFAX, VA. - UUNET this summer will start replacing its existing ATM core backbone with one based on Multi-protocol Label Switching (MPLS). Switching to MPLS is expected to speed up UUNET's current OC-48 network and eventually give users more bang for their buck, says Jeff Sturgeon, vice president of marketing at UUNET, an MCI WorldCom subsidiary. MPLS is an Internet Engineering Task Force specification for increasing the efficiency of IP routing. Instead of including information in the header of an ATM cell, which eats up precious bandwidth, MPLS uses labels or tags to identify where traffic should be sent. These tags are designed to speed up the routing process while sending traffic along the most efficient paths across the network. By the end of next quarter, UUNET will reveal whose MPLS gear it plans on deploying at the core of its network - and eventually across its entire network. Sturgeon says UUNET will not disconnect the ATM network entirely until after engineers have MPLS running well. UUNET would not yet say which vendor's products it plans on deploying. However, Cisco is a distinct possibility. Cisco plans on rolling out MPLS support in July in the newest version of its IOS routing software. UUNET will be displacing its current FORE System's ASX 4000 ATM switches with its new MPLS devices, Sturgeon says. UUNET was never big on ATM because of the technology's overhead, which eats up bandwidth. But UUNET's growth over the past three to four years forced it to find a faster replacement for the frame relay it once used for its backbone. With the MPLS specification being built into products, UUNET is now ready to replace ATM. UUNET will eventually extend MPLS outside of the core, while keeping the transition transparent to customers, Sturgeon explains. While UUNET's R&D folks are busy testing MPLS devices and mapping out a deployment strategy, the ISP has been bringing its digital subscriber line (DSL) service to market. And surprisingly UUNET's DSL service support is ahead of schedule, according to Sturgeon. Next week, the service provider is expected to announce that its UUlink DSL service is fully available in 12 cities. There are more cities that are offering the service, but only 12 have full-metropolitan area coverage. Sturgeon says that UUNET committed to having DSL service support in over 1,000 points of presence before year-end. In addition, UUNET is expected to announce the addition of several new data centers and the further support for co-location and Web hosting services geared toward enterprise application hosting. UUNET is also expected to announce further OC-48 network upgrades in its international networks over the next few months. nwfusion.com