Classical IP

• Classical IP and ARP over ATM are defined in RFC-2225 (April, 1998)

• Classical IP in an ATM environment deals with using

  • ATM VVCs as direct substitutes for ”wires” between routers and
  • Logical IP Subnets (LISs) as direct substitutes for LANs

• The whole paradigm is that of LANs with ARP capability connected by routers and links between the routers

• RFC-2225 does not preclude further developments of ATM, such as a single ATM network replacing a number of LANs, which requires different treatment of IP and ARP

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