OSPF Network Types

Broadcast, Multi-Acess Networks

  • Example, Ethernet, Token Ring
  • Single Operation Mode
  • DR/BDR, 10 Second Hellos, Dual Multicast Addressing (224.0.0.5 and 224.0.0.6)

Point-to-Point Networks

  • Example: T1, ISDN, BRI/PRI
  • Single Operation Mode
  • No DR/BDR, 10 Second Hellos, Single Multicast address

Non-Broadcast Multi-Access (NBMA) Networks

  • Example: Frame Relay, X25, MPLS, ATM
  • Five Modes of operation

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