Cisco Systems 350 manual Overview Vlan Support

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Chapter 1 Overview

VLAN Support

A VLAN can be thought of as a broadcast domain that exists within a defined set of switches. A VLAN consists of a number of end systems, either hosts or network equipment (such as bridges and routers), connected by a single bridging domain. The bridging domain is supported on various pieces of network equipment; for example, LAN switches that operate bridging protocols between them with a separate group for each VLAN.

VLANs are created to provide the segmentation services traditionally provided by routers in LAN configurations. Routers in VLAN topologies provide broadcast filtering, security, address summarization, and traffic-flow management. None of the switches within the defined group will bridge any frames, not even broadcast frames, between two VLANs.

Several key issues must be considered when designing and building switched LAN networks.

LAN segmentation

Security

Broadcast control

Performance

Network management

Communication between VLANs

VLANs are extended into the wireless realm by adding IEEE 802.1Q tag awareness to the bridge. Frames destined for wireless LAN clients on different VLANs are transmitted by the bridge on different SSIDs with different WEP keys. The only clients that can receive and process packets are those with the correct WEP keys. Conversely, packets coming from a client associated with a certain VLAN are 802.1Q tagged before they are forwarded onto the wired network.

Figure 1-1illustrates the difference between traditional physical LAN segmentation and logical VLAN segmentation with wireless devices connected.

Cisco Aironet 350 Series Bridge Software Configuration Guide

 

OL-1410-07

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Contents Overview Key Features What is QoS? Quality of Service SupportManagement Options Roaming Client DevicesVlan Support What is a VLAN?Limitations and Restrictions Related DocumentsOverview Vlan Support Incorporating Wireless Devices into VLANs Vlan Example Ssid Student Ssid Faculty Vlan segmentationRoot and Non-root Bridges Role in a Wireless NetworkFile server LAN segment a Bridge Root unit Workstation aRepeater Bridge Rugged Access PointBridge Non-root Repeater LAN segment B Workstation BWorkstationLaptopWorkstation Bridge Functioning as Rugged Access PointOL-1410-07
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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.