A Study on a Queue Management Scheme for Alleviating the Impact of Packet Size on the Throughput

패킷 크기에 따른 처리율 영향을 완화하는 큐 관리 기법 연구

  • Published : 2002.06.01

Abstract

Differentiated services (DiffServ) architecture defines a new framework for the support of quality of service (QoS) in IP-based networks. RIO has received the most attention among all the active queue management mechanisms proposed for assured service in DiffServ environment. The paper proposed the enhanced RIO which could alleviate the impact of flow's packet sire on the realized throughput. The simulation results indicate that this mechanism, when combined with TSW as traffic conditioner, provide better throughput assurance and fair distribution of excess bandwidth independent of packet size of flows in case of well-provisioned network environment.

차별 서비스 모델은 IP 기반 네트워크에서 서비스 품질을 제공하기 위한 새로운 구조 모델이다. RIO 는 차별 서비스 네트워크 환경에서 라우터의 큐 관리 메커니즘으로 가장 널리 적용되고 있다. 본 논문은 패킷 길이에 따른 처리율의 영향을 완화하는 개선된 RIO 메커니즘을 제안한다. 트래픽 조절 기능인 TSW 기능과 결합하여 시뮬레이션을 수행한 결과, 제안된 메커니즘은 적절히 배치된 네트워크 상황에서 패킷 길이에 무관하게 안정된 처리율을 보장하고, 대역폭의 공평한 분배를 제공하는 것으로 분석된다.

Keywords

References

  1. R. Braden, et al., Integrated Services in the Internet Architecture: an Overview, Internet RFC 1633, July 1994
  2. S. Blake, et al., An Architecture for Differentiated Services, Internet RFC 2475, Dec. 1998
  3. D. Clark, W. Fang, 'Explicit Allocation of Best Effort Packet Delivery Service', ACM Transactions on Networking, Aug., 1998
  4. I. Yeom and N. Reddy, Impact of marking strategy on aggregated flows in a DiffServ network, IEEE ICMCS '99, 1999
  5. Y. Bernet., et al., A Conceptual Model for DiffServ Routers, IETF Internet Draft, draft-ietf-diffserv-model-02.txt, March 2000
  6. N. Seddigh, et al., Bandwidth Assurance Issues for TCP flows in a Differentiated Services Network, Globecom '99, Dec., 1999
  7. W. Lin, R.Zheng and J. Hou, How to Make Assured Services More Assured, ICNP '99, Oct. 1999
  8. I. Yeom, J. Hou, Realizing Throughput Guarantees in a Differentiated Services Network, ICMCS, Florence, Italy, June 1999
  9. S. Floyd and V. Jacobson, 'Random Early Detection gateways for Congestion Avoidance', IEEE/ACM Transactions on Networking, vol.1 n.4, Aug. 1993
  10. Network simulator (Ns), University of California at Berkeley, CA, 1997. Available via http://www-nrg.ee.lbl.gov/ns/
  11. S. Floyd and K. Fall, 'Router mechanisms to support end-to-end congestion control', LBL Technical Report, Feb. 1997