ZyXEL P-870HN-51b User Guide - Page 210
Technical Reference, Table 74
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Chapter 16 Quality of Service (QoS) The following table describes the labels in this screen. Table 74 QoS > Monitor LABEL DESCRIPTION Refresh Interval Enter how often you want the Device to update this screen. Select No Refresh to stop refreshing statistics. Interface Monitor No. This is the index number of the entry. Name This shows the name of the WAN interface on the Device. Pass This shows how many packets forwarded to this interface are transmitted successfully. Drop This shows how many packets forwarded to this interface are dropped. Queue Monitor No. This is the index number of the entry. Name This shows the name of the queue. Pass This shows how many packets assigned to this queue are transmitted successfully. Drop This shows how many packets assigned to this queue are dropped. 16.8 Technical Reference The following section contains additional technical information about the Device features described in this chapter. IEEE 802.1Q Tag The IEEE 802.1Q standard defines an explicit VLAN tag in the MAC header to identify the VLAN membership of a frame across bridges. A VLAN tag includes the 12-bit VLAN ID and 3-bit user priority. The VLAN ID associates a frame with a specific VLAN and provides the information that devices need to process the frame across the network. IEEE 802.1p specifies the user priority field and defines up to eight separate traffic types. The following table describes the traffic types defined in the IEEE 802.1d standard (which incorporates the 802.1p). Table 75 IEEE 802.1p Priority Level and Traffic Type PRIORITY LEVEL TRAFFIC TYPE Level 7 Typically used for network control traffic such as router configuration messages. Level 6 Typically used for voice traffic that is especially sensitive to jitter (jitter is the variations in delay). 210 P-870HN-5xb User's Guide