3Com 3C16723A, 3C16721A, 3C16722A Fast Ethernet Hub 12-Front, Alert LED Power LED Collision LED

Page 8

Fast Ethernet Hub 12—Front

Alert LED

Power LED

Collision LED

orange

green

yellow

Alerts you to

Indicates that

Flashes each time a

excessive network

the power

collision is detected

use or a

supply to the

at the hub. Collisions

partitioned

hub is present.

are part of normal

100BASE-TX port.

 

network operation.

Port Status LEDs

Network Utilization LEDs

green/yellow

green/yellow/orange

Indicates the status of each port. If

Indicates how much your

nothing is connected, the LED is off.

network is being used.

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.

 

 

 

 

 

Port Status

 

 

Network Utilization

 

 

 

1

2

3

4

5

6

 

 

Alert

Power Collision

7

8

9

10 11

12

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

Green = OK, Yellow = Partitioned

OfficeConnect Fast Ethernet Hub 12

8

Image 8
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-Front100BASE-TX RJ-45 ports Power adapter socketFast Ethernet Hub 4 and Hub 8-Rear Alert LED Power LED Collision LED Fast Ethernet Hub 12-FrontUplink/Normal switch Fast Ethernet Hub 12-RearHub Connections Before You StartWorkstation Connections Stacking Clip Stacking the Units TogetherRubber Feet Positioning Your OfficeConnect Hub Securing Your HubExample Connecting Workstations and Other Equipment to Your HubConnecting OfficeConnect Hubs Together Connecting 100BASE-TX Hubs Connecting to 10BASE-T NetworksChecking Hub Connections Spot ChecksProblem Solving Straight-through Cable/Crossover Cable Networking Terminology OfficeConnect Fast Ethernet Hub Dimensions and StandardsDimensions and Operating Conditions Standards EMCEnvironmental Statements End Of Life StatementRegulated Materials Statement Environmental Statement about the DocumentationImportant Safety Information Wichtige Sicherheitshinweise Consignes Importantes DE Sécurité Online Technical Services 3Com Knowledgebase Web ServicesTechnical Support World Wide Web SiteSupport from Your Network Supplier Support from 3ComEurope, South Africa, and Middle East Country Telephone Number Asia, Pacific RimEurope 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.