3Com 10/100BASE-TX quick start Port 100BASE-FX, For the CoreBuilder 9000 Enterprise Switch

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10-Port 100BASE-FX and

20-Port 10/100BASE-TX Fast Ethernet Layer 2 Switching Modules Quick Start Guide

For the CoreBuilder® 9000 Enterprise Switch

Module Descriptions This guide describes key installation information for two CoreBuilder® 9000 Fast Ethernet (FEN) Switching Modules:

■The 10-port 100BASE-FX Fast Ethernet Layer 2 Switching Module (Model Number 3CB9LF10MC) has ten 100 Mbps Ethernet fiber-optic ports with SC connectors on its front panel and two 1-Gigabit ports on the back for connection to the chassis backplane.

■The 20-port 10/100BASE-TX Fast Ethernet Layer 2 Switching Module (Model Number 3CB9LF20R) has twenty 10/100 Mbps RJ-45 ports on its front panel and two 1-Gigabit ports on the back for connection to the chassis backplane.

Each of these FEN Switching Modules operates as a Layer 2 switch and occupies a single switching module slot in the CoreBuilder 9000 7-slot chassis, 8-slot chassis, or 16-slot chassis.

Key Features The 10/100BASE-TX and 100BASE-FX FEN Switching Modules support the following key features:

■Hot-swapping of modules

■Management using the Administration Console

(a command line interface), the Web Management suite of applications with an Internet browser, or SNMP-based applications

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Contents Port 100BASE-FX For the CoreBuilder 9000 Enterprise Switch100BASE-FX Class LED Product ESD Safety Information Instructions Installation Prerequisites Page Up to 2 can be Accessed by this Module Up to 2 can be Accessed by this Module Not applicable Up to 2 can be Accessed by this Module Up to 2 can be Accessed by this Module Not applicable Reserved for an SFM Not applicable Reserved for an SFM Not applicable Page Spring-loaded Screws Spring-loaded Screw Page LED Web Management Administration ConsolePower Specifications Physical SpecificationsCabling Requirements Environmental RequirementsRelated CoreBuilder Documents Regulatory Compliance Safety EmissionsCoreBuilder 9000 Documentation CD-ROM 3Com Corporation Limited Warranty Warranties Exclusive Emissions Compliance Statements for Class a Products 3Com Corporation 5400 Bayfront Plaza Santa Clara, California

100BASE-FX, 10/100BASE-TX specifications

3Com 10/100BASE-TX and 100BASE-FX are network technologies that played a pivotal role in the evolution of Ethernet networking. As part of the Fast Ethernet standard, these protocols allow for the transfer of data at high speeds, which has benefited various industries and residential environments.

10/100BASE-TX, often referred to simply as Fast Ethernet over twisted pair, can operate at both 10 Mbps and 100 Mbps speeds, providing flexibility for network installations. This dual-speed feature is facilitated through the use of Category 5 or higher twisted pair cabling. With the ability to automatically negotiate the optimal speed, 10/100BASE-TX allows devices to communicate effectively in diverse network environments, minimizing compatibility issues.

One of the standout characteristics of 10/100BASE-TX is its ease of installation. The use of twisted pair wiring—the same type often used for telephone lines—reduces complexity and lowers infrastructure costs. This technology also supports the use of various physical layer standards, making it adaptable for different network architectures. Power over Ethernet (PoE) capabilities are an added advantage, allowing both data and electrical power to be delivered via the same cabling, simplifying setups for devices like IP cameras and wireless access points.

On the other hand, 100BASE-FX represents Fast Ethernet over fiber optics, providing a different solution for high-speed networking. Operating at 100 Mbps, it is particularly suited for long-distance data transmission, capable of distances up to 2 kilometers using multimode fiber and up to 20 kilometers with single-mode fiber. This makes 100BASE-FX an ideal choice for interconnecting different buildings within a campus or for connecting remote offices.

In terms of technology, 100BASE-FX utilizes light waves to transmit data, resulting in lower attenuation and immunity to electromagnetic interference, a major advantage in environments with substantial electrical noise. This optical technology enhances security as fiber optics are inherently more difficult to tap into without detection.

Overall, both 3Com's 10/100BASE-TX and 100BASE-FX are significant in their contributions to networking technology. They offer unique features that cater to distinct networking needs, whether for short-range, flexible deployments using copper cabling or for long-distance, high-capacity deployments using fiber optics. Their continued relevance speaks to their robust design, versatility, and reliability in a rapidly evolving technological landscape.
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