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Fat AP and Cloud AP V200R008C00 CLI-based Configuration Guide

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WLAN roaming allows STAs to move within the coverage areas of RUs belonging to the same ESS with nonstop service transmission. In Figure 19-1, STA moves from RU_1 to RU_2 without service interruption.

Figure 19-1  WLAN roaming


The most obvious advantage of WLAN networks is that a STA can move within a WLAN network without physical media restrictions. WLAN roaming allows the STA to move within a WLAN network without service interruption. An ESS includes multiple RUs. When a STA moves from an RU to another, WLAN roaming ensures seamless transition of STA services between RUs.

WLAN roaming offers the following advantages:
  • Retains the STA's IP address. After roaming, the STA can still access the initially associated network and retains its services.

  • Avoids packet loss or service interruption caused by long-term authentication.

    Fast roaming prevents STA re-authentication, ensuring nonstop user service transmission.

Updated: 2019-01-11

Document ID: EDOC1000176006

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