User's Manual

UTT Technologies Chapter 10 QoS
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preferential forwarding for VoIP traffic. If you select the check box to enable this
feature, the LAN userV¶ VoIP traffic will be exempt from the restriction of the rate limit
rules. The VoIP applications mainly include: Network Phone, Video Conference, etc.
 Enable Preferential Forwarding for Web Traffic: It allows you to enable or disable
preferential forwarding for Web traffic. If you select the check box to enable this
feature, the LAN userV¶ Web traffic will be exempt from the restriction of the rate limit
rules, thus the web browsing speed of the LAN users will be improved.
 Enable Preferential Forwarding for VPN Traffic: It allows you to enable or disable
preferential forwarding for VPN traffic. If you select the check box to enable this
feature, the LAN userV¶ VPN traffic (including PPTP, L2TP and IPSec VPN traffic) will
be exempt from the restriction of the rate limit rules.
 Enable Preferential Forwarding for Email Traffic: It allows you to enable or disable
preferential forwarding for Email traffic. If you select the check box to enable this
feature, the LAN userV¶ Email traffic will be exempt from the restriction of the rate limit
rules.
¾ Save: Click it to save your settings.
Note
Only after you have enabled rate limit in the QoS > Global Settings page, the Device
can preferentially forward the selected applications traffic.
10.6 Configuration Examples for QoS
10.6.1 Example One
1. Requirements
In this example, a business has a single Internet connection with uplink bandwidth 10
Mbit/s and downlink bandwidth 20 Mbit/s. And the number of network devices is
approximately 100.
The requirements are as follows: All the LAN users want to access the Internet smoothly,
and the bandwidth will not be wasted when the network is idle. Besides, the administrator
wants to limit the rate of the P2P applications for each LAN host: Max. Tx Rate is 64 Kbit/s,
Max. Rx Rate is 128 Kbit/s.
2. Analysis