Cisco 2900 SERIES XL - Manual (Page 27)

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Catalyst 2900 Series XL Hardware Installation Guide
78-6461-03
Chapter 1 Product Overview
100BASE-FX Ports
The 10/100 ports on the Catalyst 2900 XL switches provide protocol support for
Cisco IP Phones and per-port priority override. Refer to the Catalyst 2900 Series
XL and Catalyst 3500 Series XL Software Configuration Guide for more
information about these features.
Cisco IP Phones—connected to the 10/100 port—must be connected to an AC
power source. Unlike the 3524-PWR XL switch, the Catalyst 2900 XL switches
do not provide inline power.
For more info on the Catalyst 3524-PWR XL switch, refer to the
Catalyst 3500 Series XL Hardware Installation Guide.
100BASE-FX Ports
The 100BASE-FX ports use 10/125- or 62.5/125-micron multimode fiber-optic
cabling. The connection distances between the switch and the attached device can
be as follows:
• If the switch port and the port on the attached device are configured for
half-duplex operation, the connection can be up to 1352 feet (412 meters).
• If the switch port and the port on the attached device are configured for
full-duplex operation, the connection can be over distances of up to 6562 feet
(2 kilometers).
Long-Reach Ethernet Ports
The Long-Reach Ethernet (LRE) ports ( Figure 1-4 ) use one RJ-21 connector to
connect up to 24 Cisco 575 LRE customer premises equipment (CPE) devices
though unstructured wiring, such as existing telephone lines. The link between the
LRE switch port and each CPE device can reach speeds of up to 15 Mbps (full
duplex) and distances of up to 4921 feet (1500 meters).
The default mode for each LRE port is speed autonegotiation, half duplex
operation. For information about configuring the LRE ports, refer to the Catalyst
2900 Series XL and Catalyst 3500 Series XL Software Configuration Guide.
For more information about the Cisco 575 LRE CPE, refer to the Cisco
575 LRE CPE Hardware Installation Guide.