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eSight V300R009C00 Operation Guide 10

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About WLAN

About WLAN

This section describes the basic concepts and functions of the WLAN Management component.

Basic Concepts

When performing WLAN management operations, you need to be familiar with the basic concepts, such as AP, AC, CAPWAP, and SSID. After understanding these concepts, you can quickly and accurately complete WLAN management.

A wireless local area network (WLAN) is a network that uses wireless channels such as radio waves, laser, and infrared rays to replace the transmission media used on a wired LAN.

Wired LANs use wired cables or optical fibers as transmission media, which are expensive and have fixed locations. As further emphasis was placed on network mobility, traditional wired LANs cannot meet users' requirements. This led to the development of WLAN, which has become the most cost-efficient and convenient network access mode. WLAN technology allows you to easily access a wireless network and move around within the coverage of the wireless network.

A WLAN uses wireless multi-access channels as the transmission media to provide LAN services. Data is transmitted by radio waves on the WLAN. WLANs are popular in business centers, airports, and other public areas.

Table 12-54 WLAN Concepts



Station (STA)

A terminal that supports 802.11 standards, such as a PC that has a wireless NIC or a mobile phone that supports WLAN.

Access point (AP)

An access point that connects wireless stations to a LAN and converts frames transmitted between a WLAN and a wired LAN.

Fit AP

An access point that cannot work independently and must work with an AC to provide WLAN access.

Fat AP

An access point that can provide WLAN access for STAs independently. In addition to basic wireless connection functions, a fat AP provides enhanced functions such as security and management functions.

Access controller (AC)

An access controller that controls and manages all APs on a WLAN, and works with an authentication server to provide authentication service for WLAN users.

Control And Provisioning of Wireless Access Points (CAPWAP)

An encapsulation and transmission mechanism defined in RFC 5415 to implement communication between APs and ACs.

Service Set Identifier (SSID)

A unique identifier that identifies a wireless network.

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.

AP region

A collection of APs. AP regions are configured based on AP deployment on enterprise networks. Generally, a region maps a hot spot.

Virtual Access Point (VAP)

A VAP is a functional entity on an AP. You can create different VAPs for each radio frequency (RF) of an AP. A VAP is created by binding a service set to a specified RF of the AP.

Wireless Intrusion Detection System (WIDS)

A system that detects interference sources, rogue APs, rogue STAs, and Ad Hoc in a timely manner.


The WLAN Management component provides the visualized management and quick service deployment capabilities, monitors wireless network quality in real time, and provides a unified solution for wired and wireless networks.

Network Planning

During network planning, you can create virtual region topologies based on existing networks and then deploy APs in region topologies, set the scale, and add obstacles to simulate network environments.

eSight can interconnect with the WLAN Planner. You can import network topology and environment planning files generated by the WLAN Planner to eSight.

Service Deployment

To deploy WLAN services, you need to bind profiles to devices.

The service deployment procedure is as follows: configure the VLANIF interface and address pool, configure tunnels between ACs and APs, set AC parameters, configure profiles, and bind profiles to AP groups.

You can deploy services on multiple ACs or a single AC using eSight.

  • Service deployment on multiple ACs: After creating profiles and AP groups on eSight, you need to deploy their binding relationship on ACs.
  • Service deployment on a single AC: You configure a single AC in AC Object Manager by directly creating profiles and AP groups and binding them on the AC.

Network Monitoring

After configuring mandatory monitoring items, you can use region topologies and Region Object Manager to monitor networks.

  1. You can view a monitored region topology to know detailed information about a network and the health of each region.
  2. If you want to know information about a key region, you can view information on portals on the Overview page in Region Object Manager.
  3. If you want to know detailed information about a resource in a region, you can open the resource page in Region Object Manager.
  4. If you want to know network intrusion and interference in a region, you can open the security menu in Region Object Manager to view rogue devices, rogue STAs, attacks, and interferers in the region.

Network Maintenance

During network maintenance, you can use eSight to troubleshoot network faults.

eSight can diagnose a WLAN network from multiple dimensions and provide fault causes and solutions. Other troubleshooting tools are provided to help you troubleshoot faults.

Updated: 2019-09-07

Document ID: EDOC1100011877

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