Connecting Category-5 Shielded Cable

Connecting Interface Cables

67

Table 70 AUX cable pinouts

RJ-45

Signal

Direction

DB-25

DB-9

 

 

 

 

 

8

CTS

5

8

 

 

 

 

 

Connecting AUX cable

Step 1: Plug the RJ-45 connector of the AUX cable into the AUX port of the switch.

Step 2: Plug the DB-25 (male) or DB-9 (male) connector at the other end into the serial port of the analog modem.

Introduction to RJ-45 connector

Being RJ-45 connector, the 10Base-T/100Base-TX port of the Switch 8800 Family supports MDI/MDIX auto-sensing and will be connected using the category-5 shielded cable. The following figure illustrates an RJ-45 connector.

Figure 49 RJ45 connector

PIN #8

PIN #1

Connecting category-5 shielded cable

Step 1: Plug one end of the network cable into the desired Ethernet RJ-45 connector on the switch.

Step 2: Plug the other end of the cable into the RJ-45 port of the peer device.

Connecting Fiber

 

All the megabit and gigabit optical modules available for the Switch 8800 Family

n are SFP modules that provide LC user ports.

 

Introduction to fiber connector

n

When selecting a fiber network facility, make sure that the type of the

 

connector and the fiber match the adopted optical port.

 

Before connecting the fiber, make sure that the receive-end optical power does

 

 

not exceed the upper threshold of the receiving optical power. Excessive

 

 

receiving optical power is very likely to burn the optical module.

 

Fiber connectors are indispensable passive components in an optical fiber

 

communication system. Their application allows the removable connection

 

between optical channels, which makes the optical system debugging and

 

maintenance more convenient and the transit dispatching of the system more

 

flexible. Among various fiber connectors, only LC connector will be introduced

 

here.

 

LC fiber connector

Page 67
Image 67
3Com 8814 Connecting AUX cable, Introduction to RJ-45 connector, Connecting category-5 shielded cable, Connecting Fiber

8810, 8814, 8807 specifications

The 3Com 8814, 8810, and 8807 are renowned products from the networking giant 3Com, which played a significant role in the evolution of networking technology in the early 1990s. These devices were instrumental during a time when organizations were transitioning from traditional communication systems to more sophisticated networking solutions.

The 3Com 8814 is a multi-port networking hub designed for small to medium-sized businesses. One of its main features includes a 10Base-T Ethernet capability, allowing for fast and reliable connectivity among various devices within a local area network (LAN). The 8814 supports up to 14 connections, providing scalability for growing businesses. The hub’s ease of use is notable; it features a plug-and-play design, which aids in quick setup without requiring extensive configuration. This plug-and-play functionality, alongside its robust physical and electrical performance, made the 8814 an appealing choice for organizations looking to enhance their networking infrastructure without significant investment.

Moving on to the 3Com 8810, this device is labeled as an intelligent network switch and ushered in advancements in network management and performance. A critical element of the 8810 is its ability to support both 10/100Base-T Ethernet connections, effectively allowing mixed-speed environments. Its built-in management features, enabled by 3Com's networking technologies, offered users the ability to monitor traffic flow, manage bandwidth allocation, and configure network settings through a user-friendly interface. This switch also incorporated advanced features like VLAN support, increasing security and segmentation within networks, which proved invaluable for sophisticated networking environments.

Lastly, the 3Com 8807 represents a more versatile and high-performance switch option suited for larger networks. This model features a stackable design that allows for a broader range of scalability and redundancy. It supports both fast Ethernet and Gigabit Ethernet, ensuring that organizations can expand their network speeds as needed. The 8807 includes features for enhanced fault tolerance and link aggregation, which bolsters reliability and performance under heavy traffic loads. Its integration with 3Com's Network Management Software provided administrators with unprecedented control over their networks, empowering them to optimize performance and troubleshoot issues effectively.

Overall, the 3Com 8814, 8810, and 8807 exemplified the company's commitment to innovation in networking technology, providing businesses with the tools necessary to develop efficient, scalable, and reliable network infrastructures. Each of these devices played a crucial role in shaping the landscape of networking, emphasizing ease of use, management capabilities, and performance.