TWISTED-PAIR CABLE AND PIN ASSIGNMENTS

100BASE-TX/10BASE-T Pin Assignments

With 100BASE-TX/10BASE-T cable, pins 1 and 2 are used for transmitting data, and pins 3 and 6 for receiving data.

RJ-45 Pin Assignments

Pin Number

Assignment1

1

Tx+

 

 

2

Tx-

 

 

3

Rx+

 

 

6

Rx-

 

 

1:The “+” and “-” signs represent the polarity of the wires that make up each wire pair.

Because all ports on this switch support automatic MDI/MDI-X operation, you can use straight-through cables for all network connections to PCs or servers, or to other switches or hubs. In straight-through cable, pins 1, 2, 3, and 6, at one end of the cable, are connected straight through to pins 1, 2, 3 and 6 at the other end of the cable. The table below shows the 10BASE-T/100BASE-TX MDI and MDI-X port pinouts.

Pin

MDI-X Signal Name

MDI Signal Name

 

 

 

1

Receive Data plus (RD+)

Transmit Data plus (TD+)

 

 

 

2

Receive Data minus (RD-)

Transmit Data minus (TD-)

 

 

 

3

Transmit Data plus (TD+)

Receive Data plus (RD+)

 

 

 

6

Transmit Data minus (TD-)

Receive Data minus (RD-)

 

 

 

No other pins are used.

Note: If auto-negotiation is disabled for an RJ-45 port, the auto-MDI/ MDI-X pin signal configuration is also disabled.

February 2003

© 2003 Foundry Networks, Inc.

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Foundry Networks OSI 100BASE-TX/10BASE-T Pin Assignments, RJ-45 Pin Assignments, Pin MDI-X Signal Name MDI Signal Name

OSI specifications

Foundry Networks, a subsidiary of Broadcom Inc., has been a significant player in the networking industry, offering a range of products and solutions focused on high-performance and scalable networking. One of the key products from Foundry Networks is its operating system, known as Foundry Networks OSI (Operating System Interface). This proprietary operating system is designed to support the firm’s line of switches and routers, emphasizing robust performance, enhanced reliability, and comprehensive management capabilities.

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Another notable characteristic of the OSI is its support for IPv6, which is essential as more organizations transition to the newer protocol to accommodate the growing number of Internet-connected devices. Through enhanced quality of service (QoS) features, Foundry Networks OSI allows administrators to prioritize traffic, ensuring that mission-critical applications receive the bandwidth they require.

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Moreover, the OSI offers an intuitive management interface, simplifying the task of monitoring and configuring network devices. GUI-based and CLI (Command-Line Interface) management options cater to different preferences and skill sets, making it easier for network administrators to maintain and optimize their networks.

In summary, Foundry Networks OSI stands out for its modular design, support for advanced networking technologies, robust security features, and user-friendly management interface. These characteristics make it a suitable choice for organizations that prioritize high performance, reliability, and scalability in their networking solutions. As enterprises continue to evolve, Foundry Networks OSI remains a relevant and powerful tool in the networking landscape.