User-configurable frame relay network

  • US 6,038,219 A
  • Filed: 07/07/1997
  • Issued: 03/14/2000
  • Est. Priority Date: 12/31/1996
  • Status: Expired due to Term
First Claim
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1. A method for providing a fault-tolerant frame-relay communications network, comprising the steps of:

  • establishing a permanent virtual circuit (PVC) between a first user frame relay equipment and a second user frame relay equipment through a service provided frame relay network;

    establishing a plurality of logical communication channels for communicating through the PVC, between the first user frame relay equipment and the second user frame relay equipment, wherein at least one channel of the plurality of channels is reserved as a diagnostic channel used exclusively for performing diagnostics;

    using the diagnostic channel to diagnose a failure in the PVC; and

    dynamically establishing a secondary communications link between the first user frame relay equipment and the second user frame relay equipment, and directing further communications between the first and second user frame relay equipment over the secondary communication link.

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