Script-driven packet marking for quality-of-service support in legacy applications

Timothy Roscoe; Gene Bowen

doi:10.1117/12.373519

27 December 1999 Script-driven packet marking for quality-of-service support in legacy applications

Timothy Roscoe, Gene Bowen

Proceedings Volume 3969, Multimedia Computing and Networking 2000; (1999) https://doi.org/10.1117/12.373519
Event: Electronic Imaging, 2000, San Jose, CA, United States

Abstract

This paper describes the implementation of a system to deliver Quality of Service for IP flows using a DiffServ- like packet marking mechanism. The system uses an unmodified commodity operating system (Windows NT), and a policy daemon is employed to implement arbitrary policies for QoS via a scripting mechanism. By interposing an agent in the protocol stack used by the application runtime system, off-the-shelf applications can have different packet forwarding policies assigned to different flows they originate, without any need to recompile either the operating system or the application. The principle of the system can be naturally extended to implement more widely coordinated policy-based networking, and network reservations using protocols such as RSVP, without any need to recompile applications.

Citation Download Citation

Timothy Roscoe and Gene Bowen "Script-driven packet marking for quality-of-service support in legacy applications", Proc. SPIE 3969, Multimedia Computing and Networking 2000, (27 December 1999); https://doi.org/10.1117/12.373519

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