1.5 Administrator's Guide

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  4. Commissioning the unit
  5. Network configuration
  6. Network Quality of Service

Network Quality of Service

Network Quality of Service provides a mechanism to differentiate between and classify various network traffic sources. Each traffic class can be assigned a priority to allowing preferential queueing and transport treatment of particular streams of traffic to meet specific needs. By default, three special classes of traffic are supported: SIP signalling, SIP audio and SIP video. Other, unclassified traffic is left “as is” by Com.X.

The special traffic classes support the setting of Layer 3 class of service (DSCP) and Layer 2 class of service (CoS Priority) for traffic generated by the Com.X. DSCP is generally visible right through the network path, whilst CoS Priority is only used for the local network queuing priority and on VLAN if configured.

Editing classification and priority

To edit the classification and priority of a particular type of traffic, right click the entry in the classes list and select edit.

Field

Contents

Class Name

sip_sig, sip_audio or sip_video

Class Description

Description of above

DSCP Value

Differentiated Services Code Point as per RFC 5865. Unclassified traffic has DF code point.

802.1p priority

VLAN priority as per IEEE 802.1Q, also internal network queue priority. P0 is normal priority (unclassified traffic), P7 is highest.

Loading network QoS defaults

To load default classification and priority settings, select options, Load Defaults.

Accept that all user changes will be over written, and Review/Apply your configuration.