Observations on the dynamics of a congestion control algorithm: the effects of two-way traffic
SIGCOMM '91 Proceedings of the conference on Communications architecture & protocols
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RFC-1072 and RFC-1185 have proposed a new TCP option "Echo/Echo Reply", in which timestamps are carried in TCP headers to aid in extending the sequence number space beyond 32 bits. However, such an extension will add an extra 64 bits to the TCP header and will require option processing for each packet at both ends. In this paper, we propose a simpler TCP extension that expands the sequence number space without increasing the size of the TCP header.