Abstract

StreamCore S.A. commissioned The Tolly Group to evaluate its StreamGroomer Module 200 (M200) Flow Regulator along with its StreamGroomer Manager (SGM), a WAN traffic shaping and optimizing system. Tests were conducted to identify the improvement rate of transactions per second (tps) when introducing the StreamGroomer system into a simulated WAN consisting of links with varying degrees of introduced latency. For these tests, The Tolly Group configured a WAN network with varying links, speeds and latencies and measured the baseline performance of the WAN in this uncontrolled environment. Following baseline tests, Tolly engineers measured the transactions across the WAN when the StreamGroomer was added and configured to give priority to interactive transactions. To deliver Quality of Service (QoS), the StreamGroomer builds a set of software “tunnels” between the various endpoints and relays the TCP/IP traffic inside these tunnels. To prioritize, the StreamGroomer system relays the TCP/IP stream of octets into an internal protocol with credit-based flow control. This protocol then creates a session between devices that can be managed by the StreamGroomer Manager software. Tolly engineers measured the StreamGroomer’s capability to stabilize the response time when sending successive files across a simulated WAN.