Chapter 4 Tutorials
XMG3512-B10A User’s Guide
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Let’s say you are a team leader of a small sales branch office. You want to prioritize e-mail traffic
because your task includes sending urgent updates to clients at least twice every hour. You also upload
data files (such as logs and e-mail archives) to the FTP server throughout the day. Your colleagues use
the Internet for research, as well as chat applications for communicating with other branch offices.
In the following figure, your Internet connection has an upstream transmission bandwidth of 10,000 kbps.
For this example, you want to configure QoS so that e-mail traffic gets the highest priority with at least
5,000 kbps. You can do the following:
• Configure a queue to assign the highest priority queue (1) to e-mail traffic going to the WAN
interface, so that e-mail traffic would not get delayed when there is network congestion.
• Note the IP address (192.168.1.23 for example) and/or MAC address (AA:FF:AA:FF:AA:FF for example)
of your computer and map it to queue 7.
Note: QoS is applied to traffic flowing out of the XMG.
Traffic that does not match this class is assigned a priority queue based on the internal QoS mapping
table on the XMG.
QoS Example
1 Click Network Setting > QoS > General and select Enable. Set your WAN Managed Upstream Bandwidth
to 10,000 kbps (or leave this blank to have the XMG automatically determine this figure). Click Apply.
Tutorial: Advanced > QoS
2 Click Queue Setup > Add new Queue to create a new queue. In the screen that opens, check Active
and enter or select the following values:
• Name: E-mail
• Interface: WAN
10,000 kbps
DSL
Your computer
IP=192.168.1.23
A colleague’s computer
Other traffic: Automatic classifier
and/or
MAC=AA:FF:AA:FF:AA:FF
Email traffic: Highest priority
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