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OwnerEric L. Chan, Andy D. Helfrich +1inventors
InventorsEric L. Chan, Andy D. Helfrich, Leland M. Kornhaus
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A method and apparatus for the robust implementation and protection of Asynchronous Transfer Mode (ATM) traffic over a Synchronous Optical Network (SONET) Unidirectional Path Switched Ring (UPSR). The traditional SONET bridging function is eliminated for the ATM traffic in favor of a selector function. The selector function occurs at the ingress of the ATM traffic to the UPSR and directs the ATM traffic to its destination via a virtual path over the UPSR. The ATM traffic is protected from both SONET failures and ATM failures by means of an Intra-Ring Communication (IRC) protocol. The IRC protocol governs failure detection and the notification of the SONET nodes on the UPSR of the failure and any protection switch that may be necessary.
A Virtual Path Ring (VPR) protection method for Asynchronous Transfer Mode (ATM) traffic carried over a Synchronous Optical Network (SONET) Unidirectional Path Switched Ring (UPSR), each ATM cell travelling along a Virtual Path (VP) connection from ingress to egress on the UPSR ring, said SONET UPSR including at least two SONET VPR nodes, each SONET VPR node including at least one SONET card, comprising:
A Synchronous Optical Network (SONET) Unidirectional Path Switched Ring (UPSR) Virtual Path Ring (VPR) network, comprising:
A Synchronous Optical Network (SONET) Virtual Path Ring (VPR) node of a SONET Unidirectional Path Switched Ring (UPSR) for transmitting and receiving Asynchronous Transfer Mode (ATM) and Time Division Multiplexer (TDM) traffic comprising:
Dependencies are inferred from the claim text.