Tuesday 13 November 2012

Wireless LAN(WLAN) Enterprise Deployment


Objective: In this knowledge base, we will be discussing how and what purchasing decisions you as an organization require to deploy a WLAN enterprise solution.
Today, in order for you to successfully deploy a Wireless LAN for your enterprise, you need to look into the CiscoUnified Wireless Networking (CUWN) suite of products.

Enterprise WLAN Solutions
What is an Enterprise WLAN solution? An enterprise WLAN solution allows your company to provide wireless access to the intranet or internet.  Some of the typical Enterprise WLAN Solutions use cases are as detailed below:
An enterprise WLAN will help your company provide access to the network for:
etc, depending on the environment
An enterprise WLAN will provide your company the ability for its users to move about untethered to wired hardware
An enterprise WLAN will help your organization serve unlimited applications like:

Health care
Oil and Gas
Your enterprise WLAN would allow your organization to provide access to individuals who use mobile devices like laptops, tablets, smartphones, iPads, cellular phones with data service, and all sorts of PDAs. All of these mobile devices help users to connect to other users and other devices and services via the network without having to be wired or cabled to a stationary or wired device.
Many enterprises today already realize the great value of using wireless access to the network. A whole lot of unique applications for WLANs in various industries already act vitally in differentiating one company from another while improving productivity and lowering safety issues and costs.
Cisco Unified Wireless Networking hardware has useful applications in both indoor and outdoor settings. Both deployment scenarios have different network expectations. While a typical indoor deployment is optimized for seamless coverage over a given area while providing sufficient throughput to process demanding applications, a typical outdoor deployment is optimized for a greater coverage area with a lower throughput.

Typical applications for an outdoor wireless network are simple low bandwidth uses such as monitoring data collection devices, traffic lights, or power substations. Though there are outdoor networks that are also capable of supporting the same applications as we have in indoor networks.

The next difference between indoor and outdoor usage of wireless LAN network is the client density. Usually, most indoor networks tend to have greater client density than a typical outdoor network, which tends to place greater demands on network performance in the indoor networks. For a typical outdoor deployment scenario, clients will be spread across a much greater geographic area, with fewer clients per access point (AP).


 The Cisco Unified Wireless Networks solutions are a suite of wireless integrated components designed flexibly to meet different customer usage scenarios. I will attempt to list the different features and benefits of the Cisco Unified Wireless Network.

Some of the Features of the Cisco Unified Wireless Network Solutions are:
An integrated WLAN solution

-      Versatile Access points

Access points provide the wireless gateway between wireless clients and the network. AP devices come in various modules; while some are designed for outdoor usage others are designed for rugged indoor usage and some are designed for specialized indoor usage and they all provide robust 802.11a/b/g/n support.

-          Standalone and integrated controllers
Cisco WLCs provide a centralized and secure WLAN protocol communication to access points, which helps facilitate their control, administration, operation, while effectively managing various types of client data traffic.

-          Network Management Software
The Cisco Wireless Control System (WCS) provides centralized management of controllers and access points, which reduces deployment and maintenance cycles and offers unique capabilities for monitoring, managing, and optimizing network resources.

-  Mobility services
A Cisco MSE (mobility services engine) is a dedicated appliance which your enterprise can use to offload software applications, generate reports and collect data in real-time from Cisco WCS.

MEET THE MOST DEMANDING CHALLENGESThe integrated Cisco Unified Wireless Network product portfolio is designed to help your organization address the challenges and requirements of different industries and environments. You are able to handle wireless LAN deployment challenges in such environments as:
   Carpeted (indoor, office-type) environments
  Remote branch office
  Guest user solutions
  Solutions to meet the very physically demanding requirements of the health care industry
  Solutions for very complex RF environments such as manufacturing
  Solutions for very tough environments such as oil, gas and mining industries
  Solutions for emergency communications using outdoor mesh products.


In order for your to setup a working Wireless LAN for your organization, you will require more or all of the following components from Cisco. A Cisco WLAN solution typically will comprise of the following subcomponents:

Access Points (AP)

WLAN controllers (WLC)

Cisco Wireless Control System (WCS)

Cisco Mobility Services Engine (MSE)

Pleasevisit our website today for your enterprise WLAN needs and solutions.

When deciding on the type of Access Point (AP) to purchase from us (Cisco Partners) or Cisco always bear in mind that there are THREE types of Access Points, namely:

Indoor Access Point
Indoor Rugged Access Point (typically used in factories with harsh environments like high temperatures or humidity)
Outdoor Access Point


By the term “Unified” is means that the Cisco Unified Wireless Network is based on a centrally controlled model. Central control in a unified network is accomplished minimally by having the access points (AP) using Cisco WLC (Wireless LAN controllers). If your organization is very large then you can add either the Cisco NCS or Cisco WCS (Wireless Control System) to help you control multiple WLC.


You also need to understand that there are two major approaches to deploying a WLAN:
1.      Standalone (also known as “Fat” or “Thick” or “Autonomous”  implementation model
2.      Lightweight( also known as “Thin” or “Controller-based” solution

If you are implementing a “Lightweight” WLAN model then you must plan to purchase a WLC (wireless LAN controller) with your AP (access point). Hence, when purchasing your access point you will have to specify whether it is Lightweight or Autonomous (aka standalone). Otherwise, if you purchase a standalone or autonomous type then you will have a big problem monitoring it from a central location or entity.

If you specify “Lightweight” it then means that you must buy a Controller (WLC) with your Access Point (AP) and this implies an additional cost due to the controller item.
You must also quote your geographical region when specifying your access point type.

“A” means America; “E” means Europe(most African countries fall within this regulatory band) and “J” means Japan.

By adding a Cisco MSE (Mobility services engine), you can deploy services such as context-aware services also known as “location-based tracking and intrusion prevention.

You can request for your enterprise WLAN products from OUR DEO today. Or if you are confused, you can request our Consultancy services.