HP Velocity - Administrator Guide

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Administrator Guide for Thin Clients | HP Velocity
HP Velocity functional overview
Real-time applications delivered over data networks can be compromised by packet loss and transmission latency. This
results in stop-and-go behavior, loss of interactivity, and an overall reduction in the throughput of an application.
HP Velocity is a Quality of Service (QoS) software engine that integrates seamlessly and, when protecting application
flows, enhances Quality of Experience (QoE) by managing packet loss, congestion, and the impact of network latency.
Establishing a connection
An HP Velocity-protected connection is established over four steps:
• Initialization
• Beaconing
• Handshaking
• Protected state
Figure 1: Establishing a connection
Initialization
During initialization, HP Velocity-enabled endpoints start streaming data transparently. No optimizations are performed.
Beaconing
After an HP Velocity-enabled endpoint detects that a bidirectional network path is available, it periodically and
seamlessly modifies IP and TCP packet headers (which can contain option-based beacons) to advertise itself to other
HP Velocity-enabled endpoints (Figure 2 on page 2
).
After an HP Velocity-enabled endpoint processes enough beacons on a network flow to discover that another
HP Velocity-enabled endpoint is at the other end, handshaking occurs.
Note: The use of TCP option-based beacons for TCP flows is a configurable system setting. For information, see System
settings on page 15.