Per-Flow Queuing Approach to Bandwidth Management

The NetEnforcer family of IP service optimization devices offers an innovative and intelligent approach to policy-powered bandwidth management on broadband networks. Our patented Per-Flow Queuing (PFQ) is a direct traffic control approach that utilizes and leverages TCP's inherent flow control mechanisms to achieve the maximum and most efficient bandwidth usage. By applying PFQ, NetEnforcer devices are able to provide
accurate per-application control that dynamically shapes both incoming and outgoing traffic flows in real time and at Gigabit speeds.

This paper will provide a brief overview of the TCP/IP protocol, which governs traffic flows on most IP networks, and it will explain how Per Flow Queuing works with the facilities of TCP/IP to allocate sufficient bandwidth for all levels of IP-based applications and services running on broadband networks.

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WAN Optimization - A Clear Cut Comparison of Leading Technologies

In today's global business arena, enterprises are increasingly dependent on their networks for realtime access to critical company resources. Enterprise IT organizations are challenged to provide more applications, services and performance without exceeding the limitations of costly international access or investing in infrastructure upgrades. From VoIP to accelerating the performance of mission-critical ERP and CRM applications, the performance of an enterprise's WAN is becoming increasingly vital to ensuring the ongoing success of its business. What's more, in light of the ongoing shift towards server consolidation, a rapidly growing number of end-users, often in multiple branch locations, are accessing data via the WAN and both performance and security are being compromised as a result.

IT managers look to WAN optimization (also referred to as traffic management) solutions to mitigate the negative effects of the WAN, such as low bandwidth, high latency, packet loss, or network congestion. When network capacity constraints put operations at risk, there are a range of technologies available to address these issues. This has opened up the opportunity for multiple WAN optimization techniques, based on various technologies, such as traffic shaping, compression and acceleration techniques, to make their way into the market.

This paper offers an overview and comparison of an array of predominant WAN optimization
technologies available in the market today:

1. Compression
2. Protocol Acceleration
3. CIFS Acceleration
4. Traffic Shaping

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