Using the Management Application

Configuration

 

 

 

 

 

Table 22. LiveQ configurable parameters

 

 

 

 

 

 

Configuration option

Description

 

 

 

 

 

Global Target Loss Rate

Specify the loss rate that HP Velocity will attempt to achieve for all active

 

 

HP Velocity-protected flows.

 

 

 

Available values are 0.04%, 0.1%, 0.2%, and 0.4%. The default is 0.04%.

 

 

NOTE: Aggressive target loss rates might not be achievable in very high-

 

 

loss networks or bandwidth restricted environments.

 

 

 

 

 

Congestion Avoidance

Congestion Avoidance analyzes network links. It detects links with

 

 

bandwidth constraints and automatically adjusts HP Velocity protection to

 

 

accommodate the bandwidth constraint.

 

 

 

When Congestion Avoidance is active and bandwidth constraints are

 

 

detected, the bandwidth and default TLR settings described in this table are

 

 

overridden to ensure the best network performance possible.

 

 

Available values are enabled or disabled. The default value is enabled.

 

 

 

 

Bandwidth Control

Specify the range of protection modes that HP Velocity is able to use when

 

 

encoding HP Velocity-protected flows.

 

 

 

The protection mode defines how protected flows are protected from

 

 

network loss. Higher protection modes protect against a greater network

 

 

loss but also require more bandwidth.

 

 

 

HP Velocity constantly monitors network loss and automatically selects the

 

 

protection mode required to reduce the network loss to the specified TLR.

 

 

The selection process is dynamic and the mode used at any given time

 

 

depends on the real-time loss measured in the network.

 

 

 

Available modes are:

 

 

 

•

Dynamic: Use this mode in situations where bandwidth is not

 

 

 

constrained. It will maximize performance while minimizing the required

 

 

 

bandwidth. Dynamic is the default mode.

 

 

 

•

Low: Use this mode in very bandwidth-constrained environments to cap

 

 

 

the estimated HP Velocity protection overhead at or below 27%.

 

 

•

Medium: Use this mode in moderately bandwidth-constrained

 

 

 

environments to cap the estimated HP Velocity protection overhead at or

 

 

 

below 40%.

 

 

 

•

High: Use this mode to maximize performance in environments where

 

 

 

bandwidth is not constrained and the network loss is known to be high.

 

 

 

This mode differs from the Dynamic mode in that it uses aggressive

 

 

 

encoding as soon as it detects HP Velocity at the far end, without first

 

 

 

measuring the loss in the network.

 

 

 

 

 

 

HP Velocity Server Side Deployment Guide

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