3Com 3C16721A, 3C16722A, 3C16723A manual Creating Your Network, Fast Ethernet Hub 4 and Hub 8-Front

Page 6

CREATING YOUR NETWORK

Fast Ethernet Hub 4 and Hub 8—Front

Alert LED

Power LED

orange

green

Alerts you to

Indicates that

excessive network

the power

use or a

supply to the

partitioned

hub is present.

100BASE-TX port.

 

Activity LED (Hub 4 only)

yellow

Flashes each time a packet is received on a port.

Collision LED

yellow

Flashes each time a collision is detected at the hub. Collisions are part of normal network operation.

Port Status LEDs

green/yellow

Indicates the status of each port. If nothing is connected, the LED is off. If green, the link between the port and the next piece of network equipment is OK.

If yellow, the port has partitioned due to a fault on that segment.

Network Utilization LEDs (Hub 8 only)

green/yellow/orange Indicates how much your network is being used.

 

 

 

 

 

Port Status

 

 

 

 

Network Utilization

 

Alert

Power Activity Collision

1

2

3

4

5

6

7

8

1% 2% 3% 6% 12% 25% 50% 80%

 

 

 

Green = OK, Yellow = Partitioned

 

 

OfficeConnect Fast Ethernet Hub 8

 

 

 

 

 

 

 

 

 

 

 

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Contents OfficeConnect Fast Ethernet Hub 4, Hub 8, Hub 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Introduction Creating Your Network Page Introduction Creating Your Network Fast Ethernet Hub 4 and Hub 8-FrontPower adapter socket Fast Ethernet Hub 4 and Hub 8-Rear100BASE-TX RJ-45 ports Alert LED Power LED Collision LED Fast Ethernet Hub 12-FrontUplink/Normal switch Fast Ethernet Hub 12-RearBefore You Start Workstation ConnectionsHub Connections Stacking the Units Together Rubber FeetStacking Clip Positioning Your OfficeConnect Hub Securing Your HubConnecting Workstations and Other Equipment to Your Hub Connecting OfficeConnect Hubs TogetherExample Checking Hub Connections Connecting 100BASE-TX HubsConnecting to 10BASE-T Networks Spot ChecksProblem Solving Straight-through Cable/Crossover Cable Networking Terminology Dimensions and Standards Dimensions and Operating ConditionsOfficeConnect Fast Ethernet Hub Standards EMCRegulated Materials Statement Environmental StatementsEnd Of Life Statement Environmental Statement about the DocumentationImportant Safety Information Wichtige Sicherheitshinweise Consignes Importantes DE Sécurité Technical Support Online Technical Services3Com Knowledgebase Web Services World Wide Web SiteSupport from Your Network Supplier Support from 3ComCountry Telephone Number Asia, Pacific Rim EuropeEurope, South Africa, and Middle East Country Telephone Number Latin America North AmericaReturning Products for Repair Country Telephone Number Fax Number3Com Corporation Limited Warranty Warranties Exclusive Disclaimer Electromagnetic Compatibility Page Page Page Part No. DUA 1672-1AAA03 Published June

3C16723A, 3C16721A, 3C16722A specifications

The 3Com 3C16722A, 3C16721A, and 3C16723A are part of a series of networking devices designed to enhance network performance, reliability, and management capabilities in various environments. These devices are primarily used in enterprise networks, catering to different sizes and types of network infrastructures.

The 3C16722A is a high-performance Ethernet switch featuring 24 ports that support 10/100/1000 Mbps speeds. Its main features include auto-MDI/MDI-X capabilities, which automatically detect connections and configure the ports accordingly, facilitating seamless integration. This switch supports VLAN (Virtual Local Area Network) functionality, enabling network segmentation and improved security. With robust forwarding capabilities, the 3C16722A ensures efficient data transfer within a network, making it ideal for organizations that require high bandwidth for data-intensive applications.

The 3C16721A, while similar to the 3C16722A, is designed for users who require fewer ports but still demand high-speed connectivity. Offering 16 ports, the 3C16721A also operates at 10/100/1000 Mbps and incorporates advanced features such as Quality of Service (QoS) settings. QoS prioritizes critical network traffic, ensuring that voice and video data are transmitted with minimal latency, which is essential for businesses that depend on real-time communication tools.

Lastly, the 3C16723A combines the functionalities of both its counterparts but extends the port offerings to cater to larger networks. Featuring 48 ports, this switch can support multiple devices simultaneously, providing extensive connectivity options. Additionally, it offers stacking support, allowing multiple switches to operate as a single unit. This capability enables network administrators to manage larger systems more efficiently and simplifies the overall network architecture.

Each of these devices utilizes advanced technologies such as Spanning Tree Protocol (STP) for loop prevention and link aggregation to enhance throughput by combining multiple connections. Security features, including port security and access control lists, are also integrated to protect sensitive data and maintain network integrity. Overall, the 3Com 3C16722A, 3C16721A, and 3C16723A are versatile networking solutions that deliver performance, scalability, and security for modern enterprise networks.