Chapter 2: Overview

Figure 2-2. Side panel of the switch (fan location).

2.4 Switch Architecture

The switch transports multiple packets at wire-speed and low latency on all ports simultaneously. It operates in full-duplex mode on all ports to effectively double the bandwidth of each connection.

This switch uses store-and-forward technology to ensure maximum data integrity. With this technology, the entire packet must be received into a buffer and checked for validity before being forwarded. This prevents errors from being propagated throughout the network.

2.5 Network Management Options

You can manage the switch over the network with a Web browser or Telnet application. Its built-in network management agent helps you manage NMP or RMON (Groups 1, 2, 3, 9) protocols.

NOTE: For a detailed description of the management features, refer to the user’s manual. To download the user manual, visit www.blackbox.com and enter LGB5128A in the search bar, then download the user’s manual, or download the user’s manual from ftp://ftp.blackbox.com/anonymous/manuals/L/LGB5128A_USER_rev1.pdf.

2.6 Operation of Web-based Management

The default values of the LGB5128A are listed below:

IP address: 192.168.1.1

Subnet mask: 255.255.255.0

Default gateway: 192.168.1.254

User name: admin

Password: (blank)

First, configure your device’s Ethernet interface to be in the same subnet as the LGB5128A switch. Then, you can browse to the LGB5128A. For example, if you type http://192.168.1.1, it will show the login screen and ask you to input a username and password to login and authorize access to the switch.

The default username is “admin,” and the default password is blank. The first time you access the switch, enter the default username. At the password prompt, simply press the enter key. Next, click the “Login” button.

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Black Box LGB5128A quick start Switch Architecture, Network Management Options, Operation of Web-based Management

LGB5128A, Black Box SFP Managed Switch Eco specifications

The Black Box LGB5128A, known for its robust design and advanced capabilities, is a standout component in the realm of network switches. Specifically, it is a managed switch that brings forth a spectrum of features tailored to enhance performance for various networking needs. Built to accommodate the demands of modern enterprises, the LGB5128A combines efficiency with scalability.

At its core, the LGB5128A is equipped with 28 ports, featuring a combination of 24 Gigabit Ethernet ports and 4 specialized SFP (Small Form-factor Pluggable) ports. This configuration allows users to enjoy flexibility in connectivity options, supporting copper and fiber connections. Its ability to seamlessly integrate into existing infrastructures makes it an ideal choice for businesses planning to expand their networks without a complete overhaul.

One of the defining features of the Black Box LGB5128A is its managed switch capabilities. Administrators can easily configure, monitor, and manage the network through a user-friendly interface. This includes web-based management, Command Line Interface (CLI), and SNMP support, providing multiple layers for network management. Advanced features such as VLAN, QoS (Quality of Service), and Link Aggregation ensure that data traffic is efficiently handled and prioritized, improving overall network performance.

The LGB5128A also emphasizes security with features like 802.1X port-based authentication, providing a robust framework to prevent unauthorized access. Moreover, it supports IGMP snooping, which optimizes multicast traffic, ensuring that bandwidth is used effectively. Another important characteristic is its redundancy support, including Rapid Spanning Tree Protocol (RSTP), which reinforces network reliability and uptime.

In terms of technological advancements, the managed switch incorporates features such as Power over Ethernet (PoE) capabilities in some models, enabling seamless power delivery to connected devices. This is particularly beneficial for powering devices like IP cameras and VoIP phones without the need for additional power sources.

Overall, the Black Box LGB5128A managed switch stands out in the networking landscape with its extensive features, security measures, and scalability options. Its blend of performance, flexibility, and management capabilities makes it an exceptional choice for businesses aiming to enhance their networking infrastructure while ensuring peak performance and security.