Kalpana (company)

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Kalpana EtherSwitch EPS-1500, one of the very first Ethernet switches.

Kalpana was a computer networking equipment manufacturer, located in Silicon Valley[1] during the 1980s and 1990s.

Kalpana is considered to be the inventor of Ethernet switching[1] as the company was the first to introduce the concept of a multi-port network switch with its seven-port EtherSwitch[2] in 1989.[3][4]

Kalpana EtherSwitch EPS-700 specifications[5]
Ports 7
Forwarding method cut-through ("on the fly") packet switching
Throughput 30 Mbit/s
Latency 40 µs
Buffer 256 packets

Kalpana also invented EtherChannel, a technology which provides additional inter-switch bandwidth by running several links in parallel. Kalpana was acquired by Cisco Systems in 1994.[1]

Kalpana had been co-founded by Vinod Bhardwaj, an entrepreneur of Indian origin,[6][7] and Larry Blair.[8]

They named the company after Bhardwaj's wife, Kalpana, whose name means "imagination" in Hindi.[8]


  1. ^ a b c "Cisco to Acquire Kalpana, Leading Ethernet Switching Company". Cisco Systems, Inc. Archived from the original on 2010-06-18. 
  2. ^ Robert J. Kohlhepp (2000-10-02). "The 10 Most Important Products of the Decade". Network Computing. Retrieved 2008-02-25. 
  3. ^ "AT&T makes Ethernet switching as easy as a "Seabreeze"". Lucent Technologies. Archived from the original on 1997-06-14. 
  4. ^ "Ethernet Switching Is Being Pushed Into The Sphere Of Unimaginable Speeds". hardware.com. 2010-05-13. Retrieved 2012-09-21. 
  5. ^ "Sun Microsystems Technical Product Marketing June 23, 1992". Sun Microsystems. Retrieved 2014-03-23. 
  6. ^ Network world 1998 Network world 1998
  7. ^ Network world website Network website
  8. ^ a b Breidenbach, Susan (May 4, 1998). "Switching grows up: Where we've come from". Network World.