Ipsilon Networks

{{Infobox company

| name = Ipsilon Networks, Inc.

| logo = File:Ipsilon Networks logo.svg

| type =

| industry = Computer networking

| founded = {{Start date and age|1994}} in Sunnyvale, California

| defunct = {{End date|1997}}

| fate = Acquired by Nokia

| num_employees =

| num_employees_year =

}}

Ipsilon Networks, Inc., was a computer networking company which specialised in IP switching during the 1990s.

The first product called the IP Switch ATM 1600 was announced in March 1996 for US$46,000.{{cite news |title= Start-up takes new IP route |author= Jim Duffy |work= Network World |date= March 4, 1996 |url= http://www.networkworld.com/news/1997/1209ipsilon2.html |access-date= July 4, 2011 |archive-url= https://web.archive.org/web/20120104185258/http://www.networkworld.com/news/1997/1209ipsilon2.html |archive-date= January 4, 2012 |url-status= dead }}

Its switch used Asynchronous Transfer Mode (ATM) hardware combined with Internet Protocol routing.{{cite web |title= The phenomenon of Ipsilon |work= Technology Inside |date= February 8, 2007 |url= http://technologyinside.com/2007/02/08/networks-part-2-the-flowering-and-dying-of-ipsilon/ |access-date= July 4, 2011 |archive-date= October 25, 2012 |archive-url= https://web.archive.org/web/20121025055811/http://technologyinside.com/2007/02/08/networks-part-2-the-flowering-and-dying-of-ipsilon/ |url-status= dead }}

The company had a role in the development of the Multiprotocol Label Switching (MPLS) network protocol.{{cite web |title= Cisco Tag Switching |author= Peter J. Welcher |work= Chesapeake NetCraftsmen web site |url= http://www.netcraftsmen.net/welcher/papers/tagswitc.htm |date= August 1, 1997 |access-date= July 4, 2011 |archive-url= https://web.archive.org/web/20120415124923/http://www.netcraftsmen.net/resources/archived-articles/491-cisco-tag-switching.html |archive-date= April 15, 2012 |url-status= dead }} The company published early proposals{{cite journal |title= Ipsilon Flow Management Protocol Specification for IPv4 |author= P. Newman|journal= RFC 1953 |url= https://tools.ietf.org/html/rfc1953 |publisher = IETF |date= May 1996 |access-date= October 8, 2013 |display-authors=etal}} related to label switching,(known by Cisco Systems as tag switching at the time) but did not manage to achieve the market share hoped for and was purchased for $120 million by Nokia in December 1997.{{cite news |title= Nokia catches a falling Ipsilon |author= Jim Duffy |work= Network World |date= December 9, 1997 |url= http://www.networkworld.com/news/1997/1209ipsilon.html |access-date= July 4, 2011 |url-status= dead |archive-url= https://web.archive.org/web/20120204063812/http://www.networkworld.com/news/1997/1209ipsilon.html |archive-date= February 4, 2012 }} The president at the time was Brian NeSmith, and it was located in Sunnyvale, California.