Stormshield SN series Configuration Manual page 294

Some applications (e.g. VoIP) require a level of service with the guarantee of compliance. Failure
to comply would result in the suspension of the service (e.g. VoIP conversations can no longer be
held). Other applications and their impact on the network's general performance may disrupt the
progress of obtaining the required service level.
To ensure the maintenance of the required service level, we recommend that you create a
CBQ QoS rule that defines a minimum guaranteed throughput. It will guarantee a service level
for specified traffic irrespective of the impact of other traffic on the network's overall performance
and without defining the bandwidth restriction for these other types of traffic.
Defining the QoS rule for VoIP
Name Type Priority Bp min Bp max Min inv. Max inv. Color Comments
Class-based queue (1 item)
QoS_VoIP
Using the QoS rule in the filter policy
To view QoS in the Filtering tab, in the Filtering and NAT module, double-click on the Action
column once you have set up your filter rule (see the document on Filtering and NAT or go to the
menu Security Policy\Filtering and NAT module\Action column).
Effects on traffic
Guarantees bandwidth for a specified traffic type.
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Introduces a maximum data transfer time for the service.
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SNS - USER CONFIGURATION MANUAL V.3
Guarantee of a minimum level of service
sns-en-user_configuration_manual-v3 - Copyright © Stormshield 2016
QUALITY OF SERVICE (QOS)