Does an AP configured with multiple SSIDs support the same number of access users as an AP configured with one SSID

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Yes. An AP configured with multiple SSIDs supports the same number of access users as an AP configured with one SSID.

Other related questions:
Does a single-radio AP configured with multiple SSIDs support the same number of access users as an AP configured with one SSID
Yes, an AP configured with multiple SSIDs supports the same number of access users as an AP configured with one SSID.

Configure multiple SSIDs for a WLAN
Configure multiple SSIDs for a WLAN. One SSID indicates a wireless signal for users. All the ACs and APs can be configured with multiple SSIDs, that is, one device can send multiple radio signals. Configuration: 1. Add a new service set (New WLAN-BSS/WLAN-ESS interfaces must be added.), and configure parameters such as the SSID. 2. Invoke this service set in the AP radio. 3. A single radio can invoke multiple service sets. Different radios can invoke the same service set (applicable to the AC). Note: - Creating new wireless networks has no effect on existing networks. - Each service set can be configured with different parameters such as encryption and authentication. - Each service set maps one VLAN, namely, one address pool and one IP address segment. - Do not reuse the service set on 2.4 GHz and 5 GHz frequency bands when configuring multiple SSIDs for Fat APs.

How to isolate STAs associated with the same SSID of an AP
Huawei APs support local Layer 2 isolation. After Layer 2 isolation is enabled, local STAs cannot communicate at Layer 2, and data can only be transmitted between uplink ports and VAP ports. To enable Layer 2 isolation, configure it on an AC.

Is the MAC address of an SSID broadcast by a Huawei AP the same as the AP's MAC address
The MAC address of an SSID broadcast by a Huawei AP is automatically generated based on parameters such as the carrier ID and AP ID, which ensures that the uniqueness of the MAC address. Therefore, the MAC address is different from that of the AP. MAC address calculation rule: The basic service set identifier (BSSID) is used to uniquely identify an AP and the BSSID format is the same as that of the MAC address, that is, XXXX-XXXX-XXXX. If an AP has only one SSID, the BSSID is the AP's MAC address. A Huawei AP supports multiple VAPs, each of which has a unique BSSID. If the BSSID of each VAP uses the AP's MAC address, duplicate BSSIDs exist. An algorithm is adopted to ensure that the BSSID of each VAP is unique and associated with the AP's MAC address. The following takes a dual-band AP's MAC address dcd2-fc01-1b40 as an example. Generally, each frequency band supports 16 VAPs. The algorithm of VAPs' BSSIDs is as follows: 1. On radio 0, the BSSID of the first VAP is the AP's MAC address. The BSSIDs of the subsequent VAPs are incremented by 1 on the previous BSSIDs. 2. On radio 1, the BSSID of the first VAP is obtained by adding 1 to the last but one bit of the AP's MAC address. The BSSIDs of the subsequent VAPs are incremented by 1 on the previous BSSIDs. For example, if the AP's MAC address is dcd2-fc01-1b40, the BSSID of the first VAP on radio 1 is dcd2-fc01-1b50. 3. On radio 2, the BSSID of the first VAP is obtained by adding 2 to the last but one bit of the AP's MAC address. The BSSIDs of the subsequent VAPs are incremented by 2 on the previous BSSIDs. For example, if the AP's MAC address is dcd2-fc01-1b40, the BSSID of the first VAP on radio 2 is dcd2-fc01-1b60.

How can I separate two STAs that connect to the same AP and SSID
Huawei APs support Layer 2 isolation. When Layer 2 isolation is enabled, STAs cannot communicate at Layer 2. Only the upstream interface and virtual access point (VAP) interface can exchange data. You can enable Layer 2 isolation on an AC.

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