Nortel BCM 3.7, Manual

Page: 801 / 1004

Implementing Quality of Service (QoS) 801
Programming Operations Guide
Implementing Quality of Service (QoS)
The QoS application delivers a set of tools that, when optimally configured, combat escalating
bandwidth costs and optimize application performance in your network.
QoS tools allow you to prioritize your critical applications and sensitive traffic. You can tailor
appropriate services to support this traffic over the wide area, thus maintaining the necessary
performance levels on an end-to-end basis.
To implement QoS, you need to configure the following:
• QoS Summary parameters ( “Configuring the QoS Summary parameters” on page 801 )
• QoS Devices ( “Configuring Devices” on page 802 )
• QoS Rules ( “Configuring Policy Rules” on page 804 )
• QoS Actions ( “Configuring Actions” on page 807 )
• QoS Policies ( “Configuring QoS policies” on page 809 )
Configuring the QoS Summary parameters
The QoS Summary parameters are global settings that affect all of the QoS Policies on your
system.
To configure the QoS Summary parameters:
1 On the navigation tree, click the Services key and click the Policy Management key.
2 Click the QoS heading.
The QoS Summary screen appears.
3
Configure the Summary parameters according to the following table.
4 Click the Advanced tab.
The Advanced screen appears.
Table 244 QoS Summary parameters
Setting Definition
Description Shows a description of the QoS service.
Version Shows the version of the QoS service.
Status Allows you to enable or disable QoS.
Premium
Bandwidth (%) Enter the percentage of bandwidth to reserve for Premium traffic.
You can enter a value from 0% to 90%.
Note : If you set the Premium Bandwidth too high, you can starve out other traffic.
Video Class Select the traffic category that is used for H.323 Video traffic.
You can assign video traffic as Premium or Best Effort .
Note : Choose Best Effort if you want to prevent IP Video traffic from competing with IP Telephony
traffic.
Premium DS
Code Enter the DiffServ Code used for Premium traffic on your network.
The default value is 0xB8.