Draytek Vigor2920 Series User Manual page 111

2. Click Setup link of WAN. Make sure the QoS Control on the left corner is checked. And
select BOTH in Direction.
3. Set Inbound/Outbound bandwidth.
Note: The rate of outbound/inbound must be smaller than the real bandwidth to
ensure correct calculation of QoS. It is suggested to set the bandwidth value for
inbound/outbound as 80% - 85% of physical network speed provided by ISP to
maximize the QoS performance.
4. Return to previous page. Type the Name of Index Class 1 by clicking Edit link. Type the
name "E-mail" for Class 1.
101
Vigor2920 Series User's Guide