Protocol History

• 1991

  • OSPF v.2 RFC published
  • Cisco ships OSPF
  • Cisco ships OSI-only IS-IS

• 1992

  • Cisco ships dual IS-IS (part of DEC Brouter)
  • Lots of OSPF deployed, but very little IS-IS

• 1993

  • Novell publishes NLSP (IPX IS-IS knockoff)

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