Riverstone Networks, was a provider of networking switching hardware based in Santa Clara, California. Originally part of Cabletron Systems, and based on an early acquisition of YAGO, it was one of the many Gigabit Ethernet startups in the mid-1990s. It is now a part of Alcatel-Lucent and its operations are being wound down via a Chapter 11 filing by their current owners. Company history 7 February 2006 - Riverstone's partner Lucent Technologies signed an Asset Purchase agreement to acquire Riverstone Networks 21 March 2006 - Lucent Technologies wins the auction for Riverstone Networks over rival Ericsson. The final price was $207 million 18 April 2006 - Lucent Technologies are currently in the process of a merger of equals with Alcatel 1 December 2006 - Lucent Technologies completed the process of a merger of equals with Alcatel. Assets of Riverstone Networks are now part of Alcatel-Lucent Products All of Riverstone Networks products were geared towards IP over Ethernet, often for a Metro Ethernet solution. All the products were multilayer switches (or switch-routers) and specialized in MPLS VPNs. 15000 Family The 15000 Family (referred to as the 15K) differed from the RS family as the 15K is not flow-based. Flow-based routers use the main CPU to process new flows and packets through the switch. The 15K differed by letting the line card processors do the work for the network traffic, leaving the main CPU to work on the system itself. This type of network processing is similar to Cisco's dCEF. The 15K products were based on a different operating system than other Riverstone products, called ROS-X. It was designed to be modular and more like the common command line interface of Cisco. 15008 - The highest performance product from Riverstone. It supported a 96 port 10/100 Ethernet card, 12 or 24 port 1GB Ethernet cards and 1 or 2 port 10GB Ethernet cards. Support for ATM and PoS was planned. 15100/15200 - Designed with the same architecture and operating system as the 15008, the 15100 and 15200 were designed more for an access/distribution network role. They were semi-modular in design with some fixed 1G Ethernet ports and GBIC uplinks for either 1GB or 10GB. RS Family The RS family of products were flow-based multilayer switches. They ran ROS software, which had a command line interface but could also be configured via SNMP. 1x00 - Fixed hardware configuration 3x00 - Semi-modular in design,