ZyXEL NWA-3500 User Guide - Page 151
ATC+WMM
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Chapter 9 SSID Screen typical data packet sizes. Note that the figures given are merely examples - sizes may differ according to application and circumstances. Table 32 Typical Packet Sizes APPLICATION TIME SENSITIVITY Voice over IP (SIP) High Online Gaming High Web browsing (http) Medium FTP Low TYPICAL PACKET SIZE (BYTES) < 250 60 ~ 90 300 ~ 600 1500 When ATC is activated, the device sends traffic with smaller packets before traffic with larger packets if the network is congested. ATC assigns priority to packets as shown in the following table. Table 33 Automatic Traffic Classifier Priorities PACKET SIZE (BYTES) ATC PRIORITY 1 ~ 250 ATC_High 250 ~ 1100 ATC_Medium 1100 + ATC_Low You should activate ATC on the NWA if your wireless network includes networking devices that do not support WMM QoS, or if you want to prioritize traffic but do not want to configure WMM QoS settings. 9.3.3 ATC+WMM The NWA can use a mapping mechanism to use both ATC and WMM QoS. The ATC+WMM function prioritizes all packets transmitted onto the wireless network using WMM QoS, and prioritizes all packets transmitted onto the wired network using ATC. See Section 9.2.1 on page 148 for details of how to configure ATC+WMM. Use the ATC+WMM function if you want to do the following: • enable WMM QoS on your wireless network and automatically assign a WMM priority to packets that do not already have one (see Section 9.3.3.1 on page 152). • automatically prioritize all packets going from your wireless network to the wired network (see Section 9.3.3.2 on page 152). NWA-3500/NWA-3550 User's Guide 151