Chapter 15 Quality of Service (QoS)
15.2 The QoS General Screen
Use this screen to enable or disable QoS and have the ZyXEL Device automatically assign priority to traffic according to the IEEE 802.1p priority level, IP precedence and/or packet length.
Click Advanced > QoS to open the screen as shown next.
Figure 138 Advanced > QoS > General
The following table describes the labels in this screen.
Table 83 Advanced > QoS > General
LABEL | DESCRIPTION |
Active QoS | Select the check box to turn on QoS to improve your network performance. |
| You can give priority to traffic that the ZyXEL Device forwards out through the WAN |
| interface. Give high priority to voice and video to make them run more smoothly. |
| Similarly, give low priority to many large file downloads so that they do not reduce the |
| quality of other applications. |
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WAN | Enter the amount of bandwidth for the WAN interface that you want to allocate using |
Managed | QoS. |
Bandwidth | The recommendation is to set this speed to match the interface’s actual transmission |
| speed. For example, set the WAN interface speed to 1000 kbps if your Internet |
| connection has an upstream transmission speed of 1 Mbps. |
| You can set this number higher than the interface’s actual transmission speed. This will |
| stop lower priority traffic from being sent if higher priority traffic uses all of the actual |
| bandwidth. |
| You can also set this number lower than the interface’s actual transmission speed. This |
| will cause the ZyXEL Device to not use some of the interface’s available bandwidth. |
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Traffic | These fields are ignored if traffic matches a class you configured in the Class Setup |
priority will | screen. |
be | If you select ON and traffic does not match a class configured in the Class Setup |
automatically | screen, the ZyXEL Device assigns priority to unmatched traffic based on the IEEE |
assigned by | 802.1p priority level, IP precedence and/or packet length. See Section 15.5.4 on page |
| 238 for more information. |
| If you select OFF, traffic which does not match a class is mapped to queue two. |
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Apply | Click this to save your changes. |
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Cancel | Click this to restore your previously saved settings. |
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