Systems and methods for combined protocol processing protocols

• US 7,197,046 B1
• Filed: 08/07/2000
• Issued: 03/27/2007
• Est. Priority Date: 08/07/2000
• Status: Expired due to Term

• Current Assignee: Shrikumar Hariharasubrahmanian
• Original Assignee: Shrikumar Hariharasubrahmanian
• Inventors: Hariharasubrahmanian, Shrikumar
• Primary Examiner(s): To; Doris H.
• Assistant Examiner(s): BLOUNT, STEVEN
• Application Number:
  US09/649,088
• Time in Patent Office: 2,423 Days
• Field of Search: 370/466, 370/467, 370/469, 370/474, 370/471
• US Class Current: 370/466
• CPC Class Codes: H04L 69/18 Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers

Abstract

Methods and systems for processing data packets enable a communication device having limited memory to participate in network protocols. One communicating device formats packets in accordance with the specifications of one or two or more communication protocols, with one or more additional constraints, and transmits it to an other communication device. The other communication device performs a specified processing of the received packet to generate a reply packet in response to the received packet, which conforms to the one of two or more communication protocols, while also satisfying one or more additional formatting constraints.

Claims

1. A method of analyzing the header of one protocol in the context of the header of at least one other protocol, the method comprising:

identifying the prefix portion of the header of the one protocol that is common with the corresponding prefix portion of the at least one other protocol; and

identifying a next portion of the header of the one protocol that differs from the corresponding next portion of the header of the at least one other protocol; and

computing at least one constraint that is to be applied to the processes which can generate packets in accordance with the at least one other protocol without requiring additional memory storage resources.

2. The method of claim 1, wherein the computing of the at least one constraint is done so that the packet generated in accordance with the at least one other protocol with the further addition of the at least one constraint will satisfy the requirements of the one protocol.

3. The method of claim 2, wherein the computing of the at least one constraint is done so that the packet generated in accordance with the at least one other protocol with the further addition of the at least one constraint will substantially satisfy the requirements of the one protocol.

4. A system for analyzing the header of one protocol in the context of the header of at least one other protocol, the method comprising:

means for identifying a prefix portion of the header of the one protocol that is common with a corresponding prefix portion of the at least one other protocol; and

means for identifying a next portion of the header of the one protocol that differs from a corresponding next portion of the header of the at least one other protocol; and

means for computing at least one constraint that is to be applied to processes having means for generating packets in accordance with the at least one other protocol without requiring additional memory storage resources.

5. The system for analyzing the header of one protocol in the context of the header of at least one other protocol as defined in claim 4 wherein said means for computing at least one constraint includes means for generating packets in accordance with the at least one other protocol with the further addition that the at least one constraint will satisfy the requirements of the one protocol.

6. The system for analyzing the header of one protocol in the context of the header of at least on other protocol as defined in claim 4 wherein said means for computing at least one constraint includes means for generating packets in accordance with the at least one other protocol with the further addition of the at least one constraint will substantially satisfy the requirements of the one protocol.