Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2004-06-30
2008-10-14
Jain, Raj K (Department: 2616)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S241100, C370S252000, C370S256000, C370S313000, C370S394000, C370S389000, C370S395300, C370S352000, C370S353000, C370S335000, C370S336000, C370S470000, C370S471000, C709S203000, C709S206000, C709S213000, C709S229000, C709S230000
Reexamination Certificate
active
07436836
ABSTRACT:
Various methods and systems for detecting whether a network device supports a protocol, which defines a supplemental header, are disclosed. One method involves detecting a value within a preamble generated by a sending device and verifying that a header format of a header, also generated by the sending device, conforms to a header format definition of a protocol. The header format definition of the protocol defines a supplemental header. The preamble can be an Ethernet preamble. In one embodiment, the preamble is a converged data link (CDL) preamble or other type of preamble that is used to convey operation, administration and management (OAM) information.
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Bhide Shreeram
Dontu Sitaram
Golshan Ali
Mushtaq Faisal
Smith Michael R.
Brock Brenna A.
Campbell Stephenson LLP
Cisco Technology Inc.
Jain Raj K
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