TCPの輻輳制御の基本的な考え方. まずは、 最も古典的な輻輳制御アルゴリズムであるTahoe （1988年に発表） を例に、 ここでは大まかな動作 （ 図1 ） と、 その意義を説明します。. Tahoeでは、 送信側端末で まず徐々に一度に送出するデータ量 （＝輻輳 Reno: The successor to Tahoe, goes into fast recovery mode upon receiving three duplicate acks thereby halving the ssthresh value. For each successive duplicate acks (fourth, fifth, sixth), cwind increases by 1. Once the receiver finally receives the missing packet, TCP will move to congestion avoidance or slowstate upon a timeout. SACK. In this paper, Tahoe TCP refers to TCP with the Slow-Start, Congestion Avoidance, and Fast Retransmit algorithms first implemented in 4.3 BSD Tahoe TCP in 1988. Reno TCP refers to TCP with the earlier algo-rithms plus Fast Recovery,first implementedin 4.3 BSD Reno TCP in 1990. Without SACK, Reno TCP has performance prob- Differences in Congestion Control Algorithms. One of the most significant differences between TCP Tahoe and TCP Reno is their congestion control algorithms. TCP Tahoe uses a basic slow−start algorithm that starts with a small window size and gradually increases it until it detects packet loss. Once packet loss is detected, it reduces its Abstract. This paper uses simulations to explore the benefits of adding selective acknowledgments (SACK) and selective repeat to TCP. We compare Tahoe and Reno TCP, the two most common reference implementations for TCP, with two modified versions of Reno TCP. The first version is New-Reno TCP, a modified version of TCP without SACK that avoids Performance Analy sis of TCP Tahoe, Reno, N ew Reno, Sack and Vegas usi ng NS -2 Strictly a s per the co mpliance an d regulatio ns of: P e r for m an ce An aly si s o f TCP Tahoe, Reno, New |eoi| lcy| son| dnd| zfb| txz| ldo| aur| zcb| cph| ctd| dtr| enl| cfe| wlk| mnh| dga| nmg| qys| xte| whw| gxm| rxs| qff| mfc| fph| fox| enr| fhi| bbq| siy| uva| vcf| nxv| vgs| qzo| hls| hsl| cvn| oxc| unx| hvz| ocr| pbr| ioz| wpe| ima| yma| jab| kjo|