Quality of service control mechanism and apparatus

DC
  • US 6,205,149 B1
  • Filed: 09/11/1997
  • Issued: 03/20/2001
  • Est. Priority Date: 09/11/1997
  • Status: Expired due to Term
First Claim
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1. A method for assigning at least one Quality of Service variable to an Ethernet frame in a telecommunications device, comprising the steps of:

  • receiving said Ethernet frame at a network interface module of said device configured for Ethernet type traffic, said received Ethernet frame having a header;

    determining if said received Ethernet frame includes both positively identified source and destination addresses, wherein said determining if said received Ethernet frame includes both positively identified source and destination addresses includes comparing a unique identifier with a first portion of a destination address selected from the header, wherein said unique identifier is associated with the bridge/router, and comparing a second portion of the destination address with a predetermined range of values in the event that the unique identifier matches the first portion of the destination address;

    determining, in the event that the second portion of the destination address is within the predetermined range of values, whether a protocol type of said received Ethernet frame is an IP protocol type, wherein said determining whether said protocol type of said Ethernet frame is an IP protocol type includes comparing the protocol type with at least one predetermined value;

    associating said received Ethernet frame with a flow in the event said received Ethernet frame includes both positively identified source and destination addresses; and

    in the event said protocol type of said received Ethernet frame is an IP protocol type and said received Ethernet frame is associated with a flow, indexing into a memory within said device using selected portions of said header to obtain, via a single lookup, both said at least one quality of service variable and routing information associated with said received Ethernet frame.

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