ZyXEL SBG3300-NB00 User Guide - Page 210

Chapter 10 Quality of Service (QoS) 10.4.1 Adding a QoS Queue Click Add new Queue or the edit icon in the Queue Setup screen to configure a queue. Figure 67 Queue Setup: Add The following table describes the labels in this screen. Table 45 Queue Setup: Add LABEL Active Name Interface DESCRIPTION Select to enable or disable this queue. Enter the descriptive name of this queue. Select the interface to which this queue is applied. Priority This field is read-only if you are editing the queue. Select the priority level (from 1 to 7) of this queue. Weight The smaller the number, the higher the priority level. Traffic assigned to higher priority queues gets through faster while traffic in lower priority queues is dropped if the network is congested. Select the weight (from 1 to 8) of this queue. Buffer Management Rate Limit OK Cancel If two queues have the same priority level, the Device divides the bandwidth across the queues according to their weights. Queues with larger weights get more bandwidth than queues with smaller weights. This field displays Drop Tail (DT). Drop Tail (DT) is a simple queue management algorithm that allows the Device buffer to accept as many packets as it can until it is full. Once the buffer is full, new packets that arrive are dropped until there is space in the buffer again (packets are transmitted out of it). Specify the maximum transmission rate (in Kbps) allowed for traffic on this queue. Click OK to save your changes. Click Cancel to exit this screen without saving. 10.5 The Class Setup Screen Use this screen to add, edit or delete QoS classifiers. A classifier groups traffic into data flows according to specific criteria such as the source address, destination address, source port number, destination port number or incoming interface. For example, you can configure a classifier to select traffic from the same protocol port (such as Telnet) to form a flow. 210 SBG3300-N Series User's Guide