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Batch Name: EPGP-EG 2013-14 Course Name : IT Networking Case name: Grand Junction Networks (GJN) Group Number: 8 Group Members: 1) Ayan Mukherjee (EG2013-08) 2) Kolhe Pravin Shivaji (EG2013-17) 3) Naresh Kumar Bairwa (EG2013-26) 4) Shaikh Owais Aslam (EG2013-35)

inferences drawn from gjn case study
Inferences drawn from GJN Case Study
  • Even though the experts were reluctant to see the potential in Ethernet, the Charney’s team realized Fast Ethernet as breakthrough technology.
  • They anticipated the business opportunity in the switch segment with 10 fold increase in the speed.
  • They predicted that the technology would be cheap and it would integrate different speeds as against existing switches.
  • As a new strategy they decided to develop market favouring standard based technology, which would be extension of the existing one.
inferences drawn from gjn case study1
Inferences drawn from GJN Case Study
  • Even though dominant market leaders threatened them to back-off, they were stuck with their concept of Fast Ethernet technology.
  • To overcome the threat, consortium was formed with aim of having major market share without disclosing the technical know how with the collaborative organizations
  • Solutions provided by the GJN consortium was in the best interest of industry and customers.
  • Finally GJN consortium was successful in convening the IEEE for a meeting on amendments in Standard 802.3.
exhibit 1 history of ethernet envisioning of gjn
Exhibit 1. History of Ethernet & Envisioning of GJN
  • 10 Mbps Ethernet was invented in 1973 by Bob Metcalfe & David Boggs & standardized as Version 1.0 & 2.0 (1980 &1982 respectively) by DIX.
  • ANSI & IEEE adopted “Standard 802.3 CSMS/CD” protocol in 1983 which was based on MAC Layer & the Physical Layer.
  • Ethernet was difficult to manage & despite a huge market share (80-90%) for LAN, bandwidth of only 10-Mbps resulted in low revenues.
  • In 1990, Kalpana had introduced multiple-port Ethernet switch, which Charney’s GJN team foresaw could integrate 10 & 100 Mbps ports.
  • GJN was envisioned in 1991 to create “Fast Ethernet” that would be 10 times faster by making changes in the Physical layer only.
exhibit 2 formation challenges of gjn
Exhibit 2. Formation & Challenges of GJN
  • In 1992, GJN was officially formed by Charney’s team & they announced “Fast Ethernet” concept on 28 Sept 1992 trying to capture the first mover advantage.
  • HP’s DPAM technology was capable of managing multimedia applications, was a deterministic network with less wait time, and supported backward compatibility.
  • As it was HP proprietary & it required changes in MAC layer, which was not in best interest of industry & customers.
  • To compete with HP’s DPAM & to avoid major changes in Standards, 3Com, SynOptics, Sun Microsystems & GJN collaborated suggesting changes in physical layer only.
  • In 1992, IEEE 802.3 meeting was called to discuss suggestions proposed by GJN Team.

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