To: Fred Fahmy who wrote (13725 ) 3/14/1998 1:20:00 PM From: Moonray Respond to of 22053
Slicing Through IP Switching Few things are changing faster than the ways we communicate. TCP/IP has emerged as the dominant protocol in corporate networks, thanks to the Internet, intranets and aggressive marketing from Microsoft Corp. And network vendors, in an effort to keep your buying dollars flowing in their general direction, are scrambling to invent solutions to your Layer 3 problems. Staying up to date with these events can be a nightmare. In June, Network Computing's Art Wittmann depicted an IP-switching landscape (see "IP Switching: Battle for the Network High Ground," atnetworkcomputing.com . It's nine months later, and the road map and cast of characters has changed significantly. Ipsilon Networks and its IP-switching technology have been gobbled up by Nokia. A merger between Ascend Communications and Cascade Communications Corp. has left 3Com Corp. without an immediate WAN strategy for FastIP. Cisco Systems has teamed with IBM Corp. to merge IBM's ARIS and Cisco's Tag Switching into an IETF standard called MPLS (Multiprotocol Label Switching). MPOA (Multiprotocol Over ATM) has come into the spotlight as another Layer 3 switching solution. And in the background, fast, hardware-based IP Layer 3 switches are quietly making a splash in the networking pool. 3Com Corp.'s FastIP FastIP started as a venture from Cascade, IBM and 3Com. 3Com was supposed to be responsible for the local-area cut-through technology at the adapter level, with Cascade providing wide-area connectivity via its IP Navigator technology and IBM providing the NHRP (Next Hop Resolution Protocol) connectivity between FastIP and IP Navigator. Not long after these plans were launched, however, Cascade merged with Ascend, and the 3Com-Cascade alliance lost steam. IBM's contribution likewise became a less pressing issue without Cascade's support. 3Com hasn't thrown in the towel, however. FastIP is alive and kicking in the LAN workplace. We know because we tested the first version of 3Com's FastIP software in our University of Wisconsin lab. techweb.com o~~~ O