Chapter 1 Overview

IEEE 802.3u 100BASE-T Specifications

Table 1-1

Cabling Specifications (continued)

 

 

 

 

 

Parameter

 

100BASE-TX

100BASE-FX (Multimode)

 

 

 

Maximum network length

200 m

272 m

(half-duplex, one repeater)4

 

 

Data rate

 

100 Mbps

100 Mbps

 

 

 

Signaling method

4B/5B5 block coded, scrambled,

4B/5B block coded, with NRZI

 

 

with MLT-3 line coding

line coding

 

 

 

 

Connector

 

RJ-45 (ISO/IEC 60603-7:-1990

SC-type: dual simplex or single

 

 

 

duplex for RX and TX

 

 

 

 

Topology

 

Star/hub

Star/hub

 

 

 

 

1.EIA/TIA-568 or EIA-TIA-568 TSB-36 compliant.

2.Cisco does not supply Category 5 UTP RJ-45 cables. However, they are available commercially.

3.Data Terminal Equipment (DTE to DTE), see Figure 1-3.

4.DTE to Repeater to DTE, see Figure 1-3.

5.4B/5B encoding or block coding, encodes four data bits into a 5-bit transmission sequence.

Figure 1-3 Maximum Segment and Network Lengths—100BASE--FX and 100BASE-TX

Maximum segment length, full duplex

100 m TX

DTE* DTE

2000 m FX–multimode

Maximum segment length, full duplex

10,000 m FX–single mode

DTE DTE

Maximum segment length, half duplex

100 m TX

DTE DTE 412 m FX

Maximum network length, half duplex

200 m TX

DTE R DTE (Repeater)

272 m FX**

**Because repeaters have more delay, total network length is shorter.

31703

*DTE = Data Terminal Equipment

PA-2FE-TX and PA-2FE-FX Two-Port Fast Ethernet Port Adapter Installation and Configuration

 

OL-3474-07

1-3

 

 

 

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Cisco Systems PA-2FE-FX, PA-2FE-TX manual Dte* Dte

PA-2FE-FX, PA-2FE-TX specifications

Cisco Systems PA-2FE-TX and PA-2FE-FX are high-performance Ethernet interface modules designed to enhance the capabilities of Cisco 2600 and 3600 series routers. They provide businesses with flexible and reliable networking solutions that meet the increasing demand for bandwidth and connectivity.

One of the main features of the PA-2FE-TX module is its ability to support two 10/100 Mbps Fast Ethernet interfaces. This allows organizations to connect multiple devices while improving network performance. The PA-2FE-FX module, on the other hand, is designed for optical fiber connections. It features two Fast Ethernet interfaces that utilize an SC connector for easier cable management in fiber optic environments. This capability facilitates long-distance data transmission, making it suitable for backbone connections or inter-building links.

Both modules incorporate advanced technologies to ensure efficient data handling. They support Cisco's Auto-Negotiation feature, enabling devices to automatically select the optimal speed and duplex settings, thus simplifying deployment and reducing configuration errors. This functionality is vital in environments with varied device capabilities, allowing seamless communication across the network.

The PA-2FE-TX and PA-2FE-FX modules utilize Quality of Service (QoS) capabilities to prioritize traffic, ensuring that critical applications receive the necessary bandwidth. This is particularly beneficial for VoIP services, video conferencing, and other latency-sensitive applications. Additionally, the modules offer support for VLANs, allowing organizations to segment their networks effectively and enhance security by isolating sensitive data traffic.

Another important characteristic of these modules is their hot-swappable nature, enabling users to replace them without powering down the router, thus minimizing downtime. This feature is critical for businesses that require high availability and reliability from their networking equipment.

In summary, the Cisco Systems PA-2FE-TX and PA-2FE-FX interface modules stand out for their versatility, enabling businesses to implement customized networking solutions tailored to specific needs. With support for both copper and fiber connections, advanced QoS features, and seamless integration into existing Cisco routers, these modules reinforce Cisco’s commitment to providing innovative, robust network solutions that cater to the demands of modern enterprise environments.