Qos - Quality Of Service - Billion BiPAC 7800GZ(L) User Manual

QoS - Quality of Service

QoS helps you to control the data upload traffic of each application from LAN (Ethernet and/or
Wireless) to WAN (Internet). It facilitates you the features to control the quality and speed of
throughput for each application when the system is running with full upstream load.
After clicking the QoS item, you can Add/Edit/Delete a QoS policy. This page will show the brief
information for policies you have added or edited. This page will also display the total available
(Non-assigned) bandwidth, in percentage, can be assigned.
Application: Assign a name that identifies the new QoS application rule.
Direction: Shows the direction mode of the QoS application.
 LAN to WAN: You want to control the traffic flow from the local network to the outside world
(Upstream). You can assign the priority for the application or you can limit the your application
used. e.g., you have a FTP server inside the local network and you want to have a limited traffic
rate controlled by the QoS policy. So, you need to add a policy with LAN to WAN direction
setting.
 WAN to LAN: Control Traffic flow from the WAN to LAN (Downstream). The connection
maybe either issued from LAN to WAN or WAN to LAN.)
Protocol: Select the supported protocol from the drop down list.
DSCP Marking: Differentiated Services Code Point (DSCP), it is the first 6 bits in the ToS byte.
DSCP Marking allows users to classify the traffic of the application to be executed according to the
DSCP value.
Rate Type: You can choose Limited or Prioritization.
 Limited (Maximum): specify a limited data rate for this policy. It also is the maximal rate for
this policy. When you choose Limited, type the Ratio proportion. As above FTP server example,
you may want to "throttle" the outgoing FTP speed to 20% of 256K and limit to it, you may use
this type.
 Prioritization: to specify the rate type control for the rule to used. If you choose Prioritization
for the rule, you parameter Priority would be available, you can set the priority for this rule.
Ratio: The rate percent in contrast to that on WAN interface given to each policy/application with
limited rate type.
Priority: The priority given to each policy/application. Its default setting is set to Normal. You may
adjust this setting to fit your policy / application.
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