Fair Assured Services Without Any Special Support at the Core

Many users require IP networks with the capacity to guarantee a minimum throughput even during periods of congestion. Furthermore, it is also desirable to share the excess unsubscribed bandwidth among active users if aggregate demand does not exceed network capacity. This kind of service, named assured service, can be provided through the Assured Forwarding (AF) Per Hop Behavior (PHB) defined in the DiffServ architecture. DiffServ mechanisms require special networking support at both the edge and the core nodes to guarantee the differentiated service. In this paper we propose the Ping Trunking scheme as a suitable mechanism to provide assured services to network users without the need for modifying core nodes. Ping Trunking is an edge-to-edge management technique that completely addresses the regulation of aggregate traffic streams at the edge of the network. In addition, it also overcomes some unfairness issues found in AF when sharing the available bandwidth among heterogeneous aggregates. Simulation results have validated the effectiveness of our proposal.

[1]  Rong Zheng,et al.  An active queue management scheme for Internet congestion control and its application to differentiated services , 2000, Proceedings Ninth International Conference on Computer Communications and Networks (Cat.No.00EX440).

[2]  Mário M. Freire,et al.  Universal Multiservice Networks , 2004, Lecture Notes in Computer Science.

[3]  Dilip D. Kandlur,et al.  Adaptive packet marking for maintaining end-to-end throughput in a differentiated-services internet , 1999, TNET.

[4]  Andrés Suárez-González,et al.  Unbiased RIO: An Active Queue Management Scheme for DiffServ Networks , 2004, ECUMN.

[5]  Andrés Suárez-González,et al.  Improving fairness requirements for assured services in a differentiated services network , 2004, 2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577).

[6]  Larry L. Peterson,et al.  Understanding TCP Vegas: a duality model , 2001, JACM.

[7]  S. Low,et al.  Understanding Vegas: a duality model , 2002 .

[8]  Kang G. Shin,et al.  Equation-based packet marking for Assured Forwarding services , 2002, Proceedings.Twenty-First Annual Joint Conference of the IEEE Computer and Communications Societies.

[9]  Alan Chapman.  Traffic Management for Aggregate IP Streams , 1999 .

[10]  Biswajit Nandy,et al.  Bandwidth assurance issues for TCP flows in a differentiated services network , 1999, Seamless Interconnection for Universal Services. Global Telecommunications Conference. GLOBECOM'99. (Cat. No.99CH37042).

[11]  Eric C. Rosen,et al.  Multiprotocol Label Switching Architecture , 2001, RFC.

[12]  Biswajit Nandy,et al.  Intelligent Traffic Conditioners for Assured Forwarding Based Differentiated Services Networks , 2000, NETWORKING.

[13]  Sally Floyd,et al.  Simulation-based comparisons of Tahoe, Reno and SACK TCP , 1996, CCRV.

[14]  David L. Black,et al.  An Architecture for Differentiated Service , 1998 .

[15]  Eun-Chan Park,et al.  Proportional bandwidth allocation in DiffServ networks , 2004, IEEE INFOCOM 2004.

[16]  Biswajit Nandy,et al.  A Time Sliding Window Three Colour Marker (TSWTCM) , 2000, RFC.

[17]  Shie-Yuan Wang,et al.  TCP trunking: design, implementation and performance , 1999, Proceedings. Seventh International Conference on Network Protocols.

[18]  Fred Baker,et al.  Assured Forwarding PHB Group , 1999, RFC.

[19]  Jordi Domingo-Pascual,et al.  Quality of Service in the Emerging Networking Panorama , 2004, Lecture Notes in Computer Science.

[20]  Andrés Suárez-González,et al.  Ping Trunking: A Vegas-Like Congestion Control Mechanism for Aggregated Traffic , 2004, QofIS.

[21]  Zheng Wang,et al.  An Architecture for Differentiated Services , 1998, RFC.

[22]  QUTdN QeO,et al.  Random early detection gateways for congestion avoidance , 1993, TNET.

[23]  Bharat K. Bhargava,et al.  A round trip time and time-out aware traffic conditioner for differentiated services networks , 2002, 2002 IEEE International Conference on Communications. Conference Proceedings. ICC 2002 (Cat. No.02CH37333).

[24]  Rong Zheng,et al.  How to make assured service more assured , 1999, Proceedings. Seventh International Conference on Network Protocols.

[25]  Joan García-Haro,et al.  Performance analysis of the counters-based modified traffic conditioner in a DiffServ network , 2003, Proceedings of the Eighth IEEE Symposium on Computers and Communications. ISCC 2003.

[26]  Larry Peterson,et al.  TCP Vegas: new techniques for congestion detection and avoidance , 1994, SIGCOMM 1994.

[27]  David D. Clark,et al.  Explicit allocation of best-effort packet delivery service , 1998, TNET.

[28]  Ioannis Lambadaris,et al.  Empirical study of buffer management scheme for Diffserv assured forwarding PHB , 2000, Proceedings Ninth International Conference on Computer Communications and Networks (Cat.No.00EX440).