What is the difference between the WMM mandatory switch and WMM function switch

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The WMM function switch controls the entire WMM function of an AP. The entire WMM function includes the WMM mandatory switch and EDCA parameter.

The WMM mandatory switch controls whether the terminals that do not support WMM can connect to a WMM-support AP.

Other related questions:
What is the relationship between WMM and 802.11e
802.11e defines Quality of Service (QoS) for the wireless LAN, which provides the required service quality for voice and multimedia applications and enhances network performance. Wi-Fi Multimedia (WMM) defines four access categories, including voice, video, best effort, and background to optimize network communication quality and ensure stable access of corresponding applications to network resources. The WMM standard is a subset of IEEE 802.11e.

What are the mappings between WMM queues and 802.1p priorities
WMM classifies data packets into four queues. 802.1P provides eight priorities. Users can configure the mappings between WMM queues and 802.1p priorities.

What are the differences between the Global Control Permission and Wi-Fi Multimedia (WMM) function
The WMM switch is used to control the whole WMM function for the AP. The WMM function includes global control permission switch and EDCA parameters. The global control permission switch controls whether the STAs that do not support WMM can connect to a WMM-enabled AP.

Difference between functions of the tracert command on a switch and a PC
The tracert command is used to discover the gateways that packets pass through from the source host to the destination host, check network connectivity, and locate network faults. The execution process of the tracert command is as follows: 1. The source host sends a packet with the TTL being 1. After the TTL times out, the first hop sends an ICMP Error message to the source host, indicating that the packet cannot be forwarded. 2. The source host sends a packet with the TTL being 2. After the TTL times out, the second hop sends an ICMP Error message to the source host, indicating that the packet cannot be forwarded. 3. The source host sends a packet with the TTL being 3. After the TTL times out, the third hop sends an ICMP Error message to the source host, indicating that the packet cannot be forwarded. 4. The source host repeats the preceding process until the packet reaches the destination host. When the tracert command is run on an S series switch (a non-S1700 switch), the switch sends UDP packets. The UDP port number of the three UDP packets starts from 33434 and is incremented by 1 every time the packets pass a hop. When one node on the packet forwarding path has equal-cost routes, the device forwards packets using a flow-based hash algorithm. The packets then are distributed to different links based on the calculation result. A maximum of three IP addresses on the equal-cost routes can be displayed each time. When the tracert command is run on a PC, the PC sends ICMP packets, which are irrelevant to port number. If a network device on the packet forwarding path has equal-cost routes, the network device performs a flow-based hash operation and the ICMP packets are distributed to only one link, and the IP address of the link is displayed. However, if the network device performs per-packet load balancing, the ICMP packets are distributed to different links on the equal-cost routes.

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