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Method and apparatus for route processing asynchronous transfer mode cells

  • US 5,528,592 A
  • Filed: 01/27/1994
  • Issued: 06/18/1996
  • Est. Priority Date: 01/27/1994
  • Status: Expired due to Fees
First Claim
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1. An apparatus for route processing asynchronous transfer mode (ATM) cells, comprising:

  • a route cell buffer for receiving a beginning ATM cell and an end ATM cell corresponding to a packet, said packet defined by a plurality of ATM cells;

    an ingress router for determining routing information for said packet from said beginning and end ATM cells received by said route cell buffer, said ingress router placing said routing information in said packet to prevent discarding of said packet or any ATM cells corresponding to said packet; and

    a virtual circuit identifier (VCI) table for storing said routing information determined by said ingress router, said VCI table providing routing information for each ATM cell of said packet during transmission of said packet, wherein said route cell buffer generates a pseudo VCI upon receipt of said ATM cells, said route cell buffer placing said pseudo VCI within each ATM cell, said routing information being indexed in said VCI table by said pseudo VCI.

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