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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).
Overview

Overview

Definition

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

Purpose

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.

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Updated: 2019-01-11

Document ID: EDOC1000176006

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