Is the WLAN rate the upstream or downstream rate

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WLAN rate refers to the wireless rate of data transmissions between APs and STAs or between bridges and downstream nodes. Devices on both ends work in half-duplex mode, that is, they can only receive or send data at a time. The WLAN rate is the sum of upstream and downstream rates. Common users mainly use Internet access services to browse web pages, most of which is downstream traffic. In this case, the WLAN rate refers to the downstream rate.

Other related questions:
Does BT download occupy high bandwidth and reduce WLAN efficiency
Currently, no evidence shows that the BT service reduces WLAN air interface efficiency. However, if BT users exist on the WLAN, other users feel that the network quality decreases. This is because air interface bandwidth is occupied by BT users. Therefore, user experience is poor on the WLAN with BT users.

Does an online 802.11b/g STA affect the rate of another online 802.11n STA
Yes. 802.11b/g STAs have a low rate and occupy the air interface for a longer time when forwarding the same traffic as 802.11n STAs. This lowers the rate of an online 802.11n STA.

Configuring routes for the upstream and downstream devices when VRRP is configured on the firewall
The next hop of the upstream and downstream devices points to the virtual IP address of the VRRP group.

On a hot standby network, can upstream and downstream devices be Layer-4 switches
Yes. In this situation, the firewall must use the virtual MAC address to encapsulate service packets. Otherwise, services are interrupted after active/standby switchover. By default, the firewall uses the physical MAC address to encapsulate service packets. On hot standby networks, Layer-4 switches establish a connection status table to record the source MAC address (that is, the MAC address of the service interface on the active firewall) in the packets forwarded by the firewall. Layer-4 switches forward packets based on the connection status table. During active/standby switchover, Layer-4 switches do not automatically refresh MAC addresses in the connection status table. Therefore, packets are sent to the original active firewall if the physical MAC address is used. As a result, services are interrupted. If the virtual MAC address is used, the connection status tables on Layer-4 switches record the virtual MAC address. After active/standby switchover, Layer-4 switches can forward service packets to the new active firewall. Corresponding to the virtual IP address, the virtual MAC address is automatically generated based on the VRID in either of the following formats: -IPv4: 00-00-5E-00-01-{VRID} -IPv6: 00-00-5E-00-02-{VRID} On a service interface of the firewall, you can run the following command to use the virtual MAC address to encapsulate service packets. system-view [sysname] interface GigabitEthernet 1/0/1 [sysname-GigabitEthernet1/0/1] vrrp virtual-mac enable

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