Cisco Catalyst WS-X3001 Installation And Configuration Manual page 15

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Inserting the ATM Expansion Module
Expansion modules are installed in the expansion slots on the front of the Catalyst switch. All front
expansion modules are installed in a similar way. Use the previous section, "Installing The
WS-X3001 (100Base TX) Expansion Module" as an example for detailed installation instructions
and precautions for the ATM module.
ATM Expansion Module Cables
The ATM module's network port is an OC-3 interface with an SC Duplex connector that uses
62.5/125 multimode fiber-optic cable rated for 155 Mbps ATM data transfer rate.
The ATM module supports cable lengths up to 2 km.
Connecting Cables to ATM Expansion Module Ports
The ATM expansion module is a full-duplex device. For its multiple VLAN (virtual LAN) features
to be enabled, The ATM module must be installed in an enhanced version of the Catalyst switch.
Refer to the chapter that covers installation in the Catalyst Stack Installation and Configuration
Guide for more information on the differences between enhanced and unenhanced versions.
(If the ATM module is installed in a unenhanced version of the Catalyst switch, the unit supports
creation of a single VLAN within its Stack, but does not support creation of multiple-stack VLANs.)
The ATM module supports connection distances up to 2 km. Connect cables to the front of the ATM
module as follows:
Observe the following warnings and notes when cabling an expansion module with fiber-optic cable.
Warning
Warning
The ports on the module, and the fiber-optic network to which it is connected, use laser light. Do not
stare into a fiber-optic port or into the end of a cable that is connected to a fiber-optic port.
Step 1
Step 2
Step 3
Function
FCC Class A (Part 15)
EN 55022 A
VCCI Class 1
Laser radiation is present when the system is open.
Do not stare into the laser beam.
Determine that you have the proper cable.
Connect an ATM cable from a switch or network device to the SC Duplex ports on the front
of the expansion module.
Verify that the connection has the proper polarity. Be sure the Tx connector on the ATM
module is linked to the Rx connector on the other device, and that the Rx connector on the
ATM module is linked to the Tx connector on the other device. (ATM Duplex SC
connectors are "keyed" to indicate proper polarity, but the polarity of your connector cables
may not be clearly marked.)
Catalyst Matrix and Expansion Module Installation and Configuration Guide
Specification
The WS-X3006 ATM Expansion Module
15