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Modified ethernet preamble for inter line card communications in a modular communication chassis

  • US 9,225,634 B2
  • Filed: 09/15/2014
  • Issued: 12/29/2015
  • Est. Priority Date: 09/25/2012
  • Status: Active Grant
First Claim
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1. A method of providing information regarding an Ethernet frame, within an Ethernet preamble of the Ethernet frame, said method comprising:

  • inserting into the Ethernet preamble an inter-line-card header that includes at least one information element selected from the group consisting of a start control character, a version number, a parity bit, a source port, a destination port, and a forwarding domain entry; and

    preserving said inter-line-card header, inside of said Ethernet preamble, in a Media Access Control (MAC) sub-layer in said Ethernet frame, to create a modified Ethernet preamble.

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