U.S. patents available from 1976 to present.
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Method and apparatus for supporting a connectionless communication protocol over an ATM network

Patent 6343083 Issued on January 29, 2002. Estimated Expiration Date: Icon_subject April 9, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

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Inventor: Han

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Inventors

Assignee

Application

No. 057872 filed on 04/09/1998

US Classes:

370/466, Converting between protocols370/392, Processing of address header for routing, per se370/395.5Multiprotocol network

Examiners

Primary: Olms, Douglas W.
Assistant: Vanderpuye, Kenneth

Attorney, Agent or Firm

Foreign Patent References

  • 0 552 385 EP 07/22/1993

International Class

H04L 012/46

Abstract

Method for managing connections on a connection-oriented network such as an ATM network, for use with devices communicating according to a connectionless communication protocol such as IP over Ethernet. Roughly described, a bridging network element (BNE) resides at the ATM point-of-presence through which a data network accesses the ATM network. When the BNE receives an internet ARP (IARP) request from the data network for forwarding onto the ATM network, it forwards it instead to an IARP server. In addition to responding to the IARP request, the IARP server also regards the IARP request as a trigger, and in response thereto, causes the ATM network to establish a connection between the BNE point-of-presence and another point-of-presence on the ATM network through which the target address can be reached. Connection time-out periods are chosen to exceed or to be very likely to exceed the address resolution cache age-out periods on the client devices, thereby ensuring that after a connection timeout, the client device will or will be very likely to transmit another IARP request before it begins streaming transmission of more data packets onto the ATM network.

Other References

  • ITU-T Recommendation Q.2931, "Broadband Integrated Service Digital Network (B-ISDN) Digital Subscriber Signalling System No. 2 (DSS2) User-Network Interface (UNI) Layer 3 Specification for Basic Call/Connection Control" (Sep. 1994)
  • The ATM Forum, "ATM User-Network Interface Specification," Version 3.1 (Sep., 1994)
  • ATM Forum, "ATM User-Network Interface Signalling Specification," Version 4.0 (UNI 4.0), af-sig-0061.000 (Jun. 1996)
  • ITU-U Reccomendation No. Q 2971, "Digital subscriber signalling system No. 2 (DSS 2) u User-network interface layer 3 specification for point-to-multipoint call/connection control"
  • M. Maher, "ATM Signalling Support for IP over ATM--UNI 4.0 Update," internet-draft draft-ietf-ion-sig-uni4.0-02.txt, Mar. 1997
  • R. Braden, "Requirements for Internet Gateways," Network Working Group, Request for Comments: 1009 (Jun. 1987)
  • J. Postel, "A Standard for the Transmission of IP Datagrams over IEEE 802 Networks," Network Working Group, Request for Comments: 1042 (Feb. 1988)
  • David C. Plummer, "An Ethernet Address Resolution Protocol," Network Working Group, Request For Comments: 826 (Nov. 1982)
  • Bertsekas, "Data Networks," pp. 14-26 (1987)
  • M. Laubach, "Classical IP and ARP over ATM," Request for Comments No. 1577 (1994)
  • M. Perez, "ATM Signaling Support for IP over ATM," Request for Comments No. 1755 (1995)
  • Heinanen, "Multiprotocol Encapsulation over ATM Adaptation Layer 5," Request for Comments No. 1483 (1993)
  • ATM Forum, "LAN Emulation Over ATM Version 1.0," ATM Forum, Mountain View, California (Jan. 1995)
  • ATM Forum, LAN Emulation Client Management Specification Version 1.0 (Sep. 1995)
  • ATM Forum, LAN Emulation Over ATM Version 1.0 Addendum (Dec., 1995)
  • ATM Forum, LAN Emulation Servers Management Specification 1.0 (Mar. 1996
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