20APPENDIX A: AIRCONNECT OVERVIEW

Multiple-AP Full This network topology will be used in most enterprise environments: multiple APs Coverage Network wired to an existing LAN to provide complete wireless network coverage. In this

scenario, as shown in the next figure, wireless clients can roam seamlessly between different coverage areas and remain connected to the network.

Theory of Operation To improve AP management and performance, you should understand basic AP functionality and configuration options. The AP includes features for different interface connections and network management.

The AP provides MAC layer bridging between its interfaces. The AP monitors traffic from its interfaces and, based on frame address, forwards the frames to the proper destination. The AP tracks the frames sources and destinations to provide intelligent bridging as wireless clients roam or network topologies change. The AP also handles broadcast and multicast message initiations and responds to wireless client association requests.

MAC Layer Bridging The AP listens to all packets on all interfaces and builds an address database using the unique IEEE 48-bit address (MAC address). An address in the database includes the interface media that the device uses to associates with the AP. (The AP internal stack interface handles all messages directed to the AP.) The AP uses the database to forward packets from one interface to another. The bridge forwards packets addressed to unknown systems to the default interface (either Ethernet or PPP).

Each AP stores information on destinations and their interfaces to facilitate forwarding. When you send an Address Resolution Protocol (ARP) request packet, the AP forwards the request over all enabled interfaces (Ethernet, PPP, or radio), except over the interface on which the ARP request packet was received. (Radio-received ARP request packets echo back to other APs over radio.)

Upon receiving the ARP response packet, the AP database keeps a record of the destination address along with the receiving interface. With this information, the AP forwards any directed packet to the correct destination. The AP forwards packets for unknown destinations to the Ethernet interface.

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3Com 09-1765-001 manual Appendix a Airconnect Overview
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09-1765-001 specifications

The 3Com 09-1765-001 is a versatile and robust networking device designed to enhance various aspects of enterprise network environments. Known for its reliability and performance, this product stands out in the competitive field of networking hardware, making it a preferred choice for businesses aiming to optimize their network infrastructure.

One of the main features of the 3Com 09-1765-001 is its support for advanced network management protocols. This device is equipped with SNMP (Simple Network Management Protocol), which facilitates efficient monitoring and management of network devices. With SNMP, network administrators can keep track of bandwidth usage, device health, and performance metrics, enabling proactive maintenance and troubleshooting.

Additionally, the 3Com 09-1765-001 boasts impressive speed and connectivity options. It features multiple Ethernet ports that support various speeds, typically ranging from 10/100 Mbps, and is designed to provide fast data transfer rates necessary for modern applications. This ensures seamless communication between devices within the network, catering to the increasing demand for speed in data handling, especially in enterprises with heavy usage.

Security is another critical characteristic of the 3Com 09-1765-001. It incorporates essential security features designed to protect sensitive data and ensure safe network access. These features include support for VLANs (Virtual Local Area Networks), access control lists, and port security measures that help to segment network traffic and restrict unauthorized access.

The device is also designed with flexibility in mind, allowing for easy integration into existing network infrastructures. It can function as a standalone device or be easily integrated with other 3Com products, creating a comprehensive networking solution tailored to specific business needs.

In terms of physical characteristics, the 3Com 09-1765-001 is typically housed in a durable chassis designed to endure the rigors of a busy server room or data center. Its compact design also allows for easy rack mounting, optimizing space usage while ensuring efficient operation.

Overall, the 3Com 09-1765-001 represents a combination of advanced features, reliable technology, and user-friendly design, making it an excellent choice for organizations looking to enhance their network capabilities. With its emphasis on speed, security, and manageability, this device is well-suited for the complexities of modern enterprise networking.
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