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Fat AP and Cloud AP V200R008C00 CLI-based Configuration Guide

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).


  • Station (STA): a terminal that supports 802.11 standards. For example, a PC that has a wireless network interface card (NIC) or a mobile phone that supports WLAN, as shown in Figure 16-1.

    Figure 16-1  Network architecture
  • Access point (AP): a device that provides 802.11-compliant wireless access for STAs. APs connect wired networks to wireless networks, as shown in Figure 16-1.

    • Central AP: an AP that takes over some of an AC's work in the agile distributed architecture to perform central management and collaboration of remote units (RUs), such as STA going online, configuration delivery, and STA roaming between RUs, as shown in Figure 16-1.

    • Remote unit (RU): a remote radio module for a central AP in the agile distributed architecture. An RU receives and sends 802.11 packets through the air interface, as shown in Figure 16-1.
  • Radio signal: high-frequency electromagnetic wave that has long-distance transmission capabilities. Radio signals provide transmission media for 802.11-compliant WLANs. Radio signals described in this document are electromagnetic waves in 2.4 GHz or 5 GHz frequency band.

  • Virtual access point (VAP): a WLAN service entity on an AP. You can create different VAPs on an AP to provide wireless access service for different user groups.
  • Service set identifier (SSID): a unique identifier that identifies a wireless network. When you search for available wireless networks on your laptop, SSIDs are displayed to identify the available wireless networks.

    SSIDs are classified into two types:
    • Basic service set identifier (BSSID): a link-layer MAC address of a VAP on an AP. Figure 16-2 shows the relationship between VAP and BSSID.
      Figure 16-2  Relationship between VAP and BSSID
    • Extended service set identifier (ESSID): an identifier of one or a group of wireless networks. For example, in Figure 16-2, SSID guest identifies a wireless network, and SSID internal identifies another wireless network. A STA scans all wireless networks and selects a wireless network based on the SSID. Generally, an SSID refers to an ESSID.

      Multiple APs can use one ESSID to provide roaming service for users; however, their BSSIDs must be unique because the MAC address of each AP is unique.

  • Basic service set (BSS): an area covered by an AP. STAs in a BSS can communicate with each other.

Updated: 2019-01-11

Document ID: EDOC1000176006

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