Wireless Access Topology, Simple Wlan | Cisco Systems 4.2 manual

Chapter 2 Deploy the Access Control Servers

Determining the Deployment Architecture

Figure 2-3 ACS in a Geographically Dispersed LAN

Region 1

Region 2

Switch 1

Firewall
Firewall	Firewall
T1	T1

ACS 1	ACS 2
ACS 3

Firewall

Switch 3

Region 3

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Wireless Access Topology

A wireless access point (AP), such as the Cisco Aironet series, provides a bridged connection for mobile end-user clients into the LAN. Authentication is absolutely necessary, due to the ease of access to the AP. Encryption is also necessary because of the ease of eavesdropping on communications.

Scaling can be a serious issue in the wireless network. The mobility factor of the WLAN requires considerations similar to those given to the dial-up network. Unlike the wired LAN, however, you can more readily expand the WLAN. Though WLAN technology does have physical limits as to the number of users who can connect via an AP, the number of APs can grow quickly. As with the dial-up network, you can structure your WLAN to allow full access for all users, or provide restricted access to different subnets among sites, buildings, floors, or rooms. This capability raises a unique issue with the WLAN: the ability of a user to roam among APs.

Simple WLAN

Asingle AP might be installed in a simple WLAN (Figure 2-4). Because only one AP is present, the primary issue is security. An environment such as this generally contains a small user base and few network devices. Providing AAA services to the other devices on the network does not cause any significant additional load on the ACS.

Configuration Guide for Cisco Secure ACS 4.2

	OL-14390-02	2-5

4.2 specifications

Cisco Systems, a global leader in IT and networking solutions, has consistently evolved to meet the demands of modern enterprises. One of its noteworthy offerings is Cisco Systems 4.2, a version that embodies a significant leap in networking technology and capability. With its rich set of features, Cisco Systems 4.2 caters to a wide range of industries, facilitating enhanced performance and security.

One of the main features of Cisco Systems 4.2 is its improved scalability. The architecture has been designed to support an ever-increasing number of devices and users, making it ideal for growing enterprises. The enhanced scalability allows organizations to expand their network capacities without compromising performance, ensuring seamless integration of new technologies and devices.

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Moreover, Cisco Systems 4.2 emphasizes infrastructure flexibility. The new architecture supports various deployment models, including on-premises, cloud, and hybrid environments. This flexibility enables organizations to adapt their networking strategies according to their specific needs and operational requirements, facilitating a more tailored approach to IT infrastructure.

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In summary, Cisco Systems 4.2 stands out as a forward-thinking networking solution with key features such as scalability, advanced security, intelligent automation, flexible infrastructure, and enhanced collaboration tools. These characteristics position Cisco Systems 4.2 as an invaluable asset for enterprises striving for digital transformation in an increasingly interconnected world. The ongoing innovation reflects Cisco's commitment to delivering cutting-edge technology solutions that drive business success and resilience.

Cisco Systems 4.2 manual Wireless Access Topology, Simple Wlan

Models: 4.2

Figure 2-3 ACS in a Geographically Dispersed LAN

Wireless Access Topology

Simple WLAN

4.2 specifications