Chapter 1 Overview

VLAN Support

In fundamental terms, the key to configuring an bridge to connect to a specific VLAN is by configuring an SSID to map to that VLAN. Because VLANs are identified by a VLAN ID, it follows that if an SSID on an bridge is configured to map to a specific VLAN ID, a connection to the VLAN is established. When this connection is made, associated wireless client devices having the same SSID are able to access the VLAN through the bridge. The VLAN processes data to and from the clients the same way that it processes data to and from wired connections. The fact that the client is wireless has no impact on the VLAN.

The VLAN feature now enables users to deploy wireless devices with greater efficiency and flexibility. For example, one bridge can now handle the specific requirements of multiple users having widely varied network access and permissions. Without VLAN capability, multiple bridges, one for each VLAN, would have to be employed to serve classes of users based on the access and permissions they were assigned.

A VLAN Example

The following simplified example shows how wireless devices can be used effectively in a VLAN environment on a college campus. In this example, three levels of access are available through VLANs configured on the physical network:

•Student access—Lowest level of access; ability to access school’s Intranet, obtain class schedules and grades, make appointments, and perform other student-related activities

•Faculty access—Medium level of access; ability to access internal files, read to and write from student databases, access the intranet and Internet, and access internal information such as human resources and payroll information

•Management access—Highest level of access; ability to access all internal drives and files, and perform management activities

In this scenario, a minimum of three VLAN connections would be required: one for each level of access discussed above. The bridge can handle up to 16 SSIDs; therefore, the following basic design could be employed as shown in Table 1-1.

Table 1-1 Access Level SSID and VLAN Assignment

Level of Access

SSID

VLAN ID

 

 

 

Student

Student

01

 

 

 

Faculty

Faculty

02

 

 

 

Management

Management

03

 

 

 

Using this design, setting up the clients is based on the level of access each user requires. A typical network diagram using this design would look like the one shown in Figure 1-2.

Cisco Aironet 350 Series Bridge Software Configuration Guide

 

OL-1410-07

1-7

 

 

 

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Cisco Systems 350 manual Vlan Example
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350 specifications

Cisco Systems has long been a prominent player in the realm of networking and communications technology. Among its comprehensive product lineup, the Cisco 350 and 340 series of switches stand out as reliable solutions for businesses looking to enhance their network performance.

The Cisco 350 series, often referred to for its accessibility and performance, is designed for small to medium-sized enterprises. It offers a versatile set of features that cater to various networking needs. Key characteristics include a range of models supporting 10/100/1000 Mbps Ethernet ports, which allow for high-speed connectivity. The series also supports PoE (Power over Ethernet) capabilities, enabling devices such as IP phones and wireless access points to receive power directly through the network connection. This not only simplifies deployment but also minimizes the need for additional power supplies.

Cisco's Intelligent Prosumer Networking features are incorporated into the 350 series, enabling enhanced security and management capabilities. The switches provide Layer 2 and Layer 3 functionality for routing and switching, allowing users to segment their networks efficiently and reduce broadcast traffic. Additionally, Quality of Service (QoS) features prioritize critical applications, ensuring a smooth user experience without interruptions.

On the other side, the Cisco 340 series builds on similar performance foundations but targets environments requiring even more robust capabilities. It includes advanced features such as StackWise technology, which provides scalability and redundancy. This allows multiple switches to operate as a single unit, improving network resilience and simplifying management.

Both the 350 and 340 series incorporate Cisco's Smart Group technology, facilitating streamlined configuration and easier monitoring of network performance. Furthermore, with Cisco DNA (Digital Network Architecture) capabilities, these switches can support automation and insights through analytics, enabling IT teams to respond rapidly to network demands.

In terms of security, both series are equipped with advanced features that prevent unauthorized access and support secure management protocols. They include features like Access Control Lists (ACLs) and storm control, further protecting network integrity.

Overall, whether you opt for the Cisco 350 or 340 series, you will benefit from a robust set of features designed for modern networking challenges, along with the innovation and reliability that Cisco Systems is known for. These switches provide scalable, efficient, and secure solutions to support business growth and operational efficiency.
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