| Publisher | University of Delaware | ||
|---|---|---|---|
| Format | 239.8KB PDF | Date added | 01 Jan 2007 |
| Topics | TCP - IP | ||
| Downloads | 6 | ||
Inefficiency in the current specification of SCTP's congestion control is characterized, which degrades performance when there are multiple packet losses in a single window. An SCTP variant, called New-Reno SCTP is presented, which introduces three modifications. First, a Fast Recovery mechanism, similar to that of New-Reno TCP, is included to avoid multiple congestion window (cwnd) reductions in a single round-trip time. Second, the paper introduces a new policy which restricts the cwnd from being increased during Fast Recovery, thus ensuring that the newly introduced Fast Recovery mechanism maintains conservative behavior. Third, it modifies SCTP's HTNA (Highest TSN Newly Acked) algorithm to ensure that Fast Retransmits are not unnecessarily delayed. This paper shows that New-Reno SCTP performs better, and still conforms to AIMD principles.
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