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Overview
This chapter describes the Cisco PA-5EFL port adapter and contains the following sections:
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Port Adapter Overview
The PA-5EFL port adapter, shown in
interfaces for the chassis. The PA-5EFL network interfaces provide a direct connection between the
high-speed bus in the router and external networks. Each Ethernet 10Base-FL interface allows a
maximum bandwidth of 10 Mbps, for a maximum aggregate bandwidth of 50 Mbps, half-duplex. Each
10Base-FL interface uses two multimode ST-type receptacles for receive (RX) and transmit (TX). All
five ports run at wire speed.
Figure 1-1
Ethernet and Ethernet 10Base-FL Overview
The term Ethernet is commonly used for all carrier sense multiple access/collision detection
(CSMA/CD) local-area networks (LANs) that generally conform to Ethernet specifications, including
IEEE 802.3. Ethernet Version 2 and IEEE 802.3 were based on, and developed shortly after, Ethernet
Version 1. The slight differences between Ethernet and IEEE 802.3 are implemented in hardware, and
both are supported automatically by the PA-5EFL port adapter without any hardware configuration
OL-3495-02
Port Adapter Overview, page 1-1
Ethernet and Ethernet 10Base-FL Overview, page 1-1
IEEE 802.3 10Base-FL Specifications, page 1-2
LEDs, page 1-3
Cables and Connectors, page 1-4
Port Adapter Slot Locations on the Supported Platforms, page 1-4
Identifying Interface Addresses, page 1-8
PA-5EFL—Faceplate View
Figure
1-1, provides up to five IEEE 802.3 Ethernet 10Base-FL
PA-5EFL Ethernet 10Base-FL Port Adapter Installation and Configuration
C H A P T E R
ETHERNET-10BFL
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1-1
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