Abstract
In these days, IP network customers become sensitive to the QoS guarantee provided by the network. Amongst many QoS guarantee schemes, Diffserv (Differentiated Services) is the one of the most practical candidates for the next generation IP networks. Under these circumstances, the commercial network venders have already provided the Diffserv routers that support EF (Expedited Forwarding) PHB (Per Hop Behavior). However, AF (Assured Forwarding) PHB in Diffserv still has not been provided by commercial routers. Therefore, it is a realistic solution that SBR3 (Statistical Bit Rate 3) of ATM emulates AF PHB, but it is not clear whether TCP traffic over AF PHB emulated by ATM is differentiated from the best effort TCP traffic over DF (Default Forwarding) PHB. To confirm the differentiation, we have experimentally studied TCP performance through the link into which TCP connections over AF PHB and DF PHB are aggregated. This paper describes the experimental results and discusses the possibility of the TCP performance differentiation between AF PHB and DF PHB over ATM.
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References
O. Aboul-Magd et al., Mapping of Diff-Serv to ATM categories, The ATM Forum/99-0093 (1999).
S. Ano, N. Decre and T. Hasegawa, Experimental TCP performance evaluation on diffserv assured forwarding over ATM SBR services, Part II, in: IEEE Internat. Conf. on Networking (ICN'01), July 2001, pp. 825-835.
S. Ano, T. Hasegawa and T. Kato, A study on accommodation of TCP/IP best effort traffic to wide area ATM network with VBR service category using selective cell discard, in: IEEE ATM'99 Workshop, May 1999, pp. 535-540.
S. Ano, T. Hasegawa and T. Kato, An experimental study on performance during congestion for TCP/IP traffic over wide area ATM network using VBR with selective cell discard, IEICE Transactions on Communications E83-B(2) (February 2000) 155-164.
S. Ano, T. Hasegawa, T. Kato, K. Narita and K. Hokamura, Performance evaluation of TCP traffic over wide area ATM network, in: IEEE ATM'97 Workshop (May 1997) pp. 73-82.
S. Ano, T. Hasegawa, T. Kato, K. Narita and K. Hokamura, Performance of TCP traffic over VBR service in ATM network, IEICE Transactions J80-B-I(6) (June 1997) 375-386.
S. Blake, D. Black, M. Carlson, E. Davies, Z. Wang and W. Weiss, An architecture for differentiated services, IETF RFC 2475 (December 1998).
D. Clark and W. Fang, Explicit allocation of Best Effort Packet Delivery Service, IEEE/ACM Transactions on Networking 6(4) (August 1998) 362-373.
S. Floyd and V. Jacobson, Random early detection gateways for congestion avoidance, IEEE/ACM Transactions on Networking 1(4) (August 1993) 397-413.
R. Geib, Differential services for the Internet and ATM, The Internet2 QoS Working Group, http:// www.internet2.edu/qos/wg/papers/I2QoS-geib-difs-atm-02.html (1999).
J. Heinanen, F. Baker, W. Weiss and J. Wroclawski, Assured Forwarding PHB Group, IETF RFC 2597 (June 1999).
J. Ibanez and K. Nichols, Preliminary simulation evaluation of an assured Service, Internet draft, draft-ibanez-diffserv-assured-eval-00.txt (August 1998).
ITU-T recommendation I.371, Traffic control and congestion control in B-ISDN, Geneva (1996).
V. Jacobson, K. Nichols and K. Poduri, An expedited forwarding PHB, IETF RFC 2598 (June 1999).
M. Katevenis, S. Sidiropoulos and C. Courcoubetis, Weighted round-robin cell multiplexing in a general purpose ATM switch chip, IEEE Journal on Selected Areas in Communications 9 (October 1991) 1265-1279.
T. Kato, T. Ogishi, A. Idoue and K. Suzuki, Intelligent protocol analyzer with TCP behavior emulation for interoperability testing of TCP/IP protocols, Formal description techniques for distributed systems and communication protocols (FORTE X) and protocol specification, testing and verification (PSTV XVII) (1997) 449-464.
K. Nichols, S. Blake, F. Baker and D. Black, Definition of the differentiated services field (DS field) in the IPv4 and IPv6 headers, The Internet Engineering Task Force, RFC 2474 (1998).
G.A. Wright and W.R. Stevens, TCP/IP Illustrated,Vol.2:The Implementation (Addison-Wesley, Reading, MA, 1995).
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Ano, S., Hasegawa, T. & Decre, N. Experimental TCP Performance Evaluation on Diffserv AF PHBs over ATM SBR Service. Telecommunication Systems 19, 425–441 (2002). https://doi.org/10.1023/A:1013850707717
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DOI: https://doi.org/10.1023/A:1013850707717