Abstract

Peribit Networks, Inc. commissioned The Tolly Group to evaluate the SR-50 Sequence Reducer, a network infrastructure device that shrinks the amount of traffic crossing the WAN and thereby effectively increases WAN link capacity. The SR-50 operates in pairs at opposite ends of a WAN connection. To benchmark the SR-50's actual traffic reduction, The Tolly Group conducted application throughput tests in three WAN link environments with a variety of traffic flows. The Tolly Group also conducted tests to validate the SR-50's capability to locate repeatable data flow sequences and reduce them, regardless of traffic type.

Peribit’s SR-50 Sequence Reducer is designed to improve WAN efficiency by reducing repetitive data before it crosses constrained links, effectively increasing usable bandwidth without requiring circuit upgrades. In Tolly Group testing, a pair of SR-50 appliances was evaluated across simulated T-1, Quad T-1, and T-3 WAN environments using a range of traffic types, including repeatable-character files, ASF media files, and mixed application traffic such as POP3, database, HTTP, HTTPS, and DNS.  

Results showed substantial bandwidth reduction and corresponding throughput gains. Across a simulated T-1 carrying mixed traffic, the SR-50 reduced data volume by 81.2%, raising effective throughput to 5.5Mbit/s, about 4.2 times the nominal T-1 capacity. With highly repetitive character traffic, effective throughput reached 44.18Mbit/s, or roughly 29 times the theoretical T-1 rate. Even with pre-compressed ASF files, the appliance achieved 18.65Mbit/s effective throughput, more than 12 times baseline throughput across the same link.  

The gains extended to faster WAN links. In a simulated Quad T-1 environment, the SR-50 achieved an average traffic reduction of 95% for mixed traffic and 97.6% for repeatable-character traffic. In a simulated T-3 environment, it reduced mixed traffic by 95.7%, repeatable-character traffic by 98.6%, and a POP/DB/HTTP/DNS/HTTPS mix by 94.6%. Tolly attributes these results to Peribit’s molecular sequence reduction approach, which identifies repeated patterns anywhere in the data stream rather than relying on more limited traditional compression windows.  

The report also highlights resilience and deployment simplicity. In pass-through validation, traffic continued uninterrupted during a simulated power failure, showing that the SR-50 was not a single point of failure when installed inline. Tolly also verified that installation and configuration required only eight steps. The platform tested was an SR-50 pair running version 1.0 on WindRiver VxWorks 5.4, connected through Linux routers and a Shunra WAN simulator, with NetIQ Chariot used to generate application traffic. Overall, the SR-50 is positioned as a WAN optimization platform that can significantly reduce circuit load and improve effective throughput across a wide range of enterprise traffic profiles.