Document directory
Http://www.silver-peak.com/technology/network_acceleration.htm
TCP Acceleration
Silver peak optimizes the performance of TCP protocol ss the Wan by employing the following functions:
- Window Scaling-Silver peak utilizes the TCP Window Scale Option to deliver window sizes as large as 1 GB. This overcome the throughput limitation imposed by the standard 64 kB TCP window size in higher latency networks.
- Selective acknowledgement-Selective acknowledgements (sack) provide a mechanic for handling multiple packet loss in a WAN environment. they give the sender a complete picture of which segments are queued at the specified er and which have not yet arrived, enabling the sender to retransmit only the missing data segments
- Round-trip Measurement-Silver peak utilizes a proprietary round trip measurement scheme that enables RTTs to be calculated more often. This leads to more accurate RTO (Retransmission timeout) measurements which, in turn, improves throughput.
- Highspeed TCP-Silver peak has implemented highspeed TCP, which is a modification to TCP's congestion control mechanic for use with TCP connections with large congestion windows. it alters how the window is opened on each round trip and closed on congestion events as a function of the absolute size of the window. this enables TCP to perform better in high-bandwidth, high-latency environments.
