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Preparing to Connect to a Network
Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) can damage equipment and impair electrical circuitry. It occurs when
electronic components are improperly handled and can result in complete or intermittent failures.
Always follow ESD-prevention procedures when removing and replacing components. Ensure that
the chassis is electrically connected to earth ground. Wear an ESD-preventive wrist strap, ensuring
that it makes good skin contact. Connect the clip to an unpainted surface of the chassis frame to
safely channel unwanted ESD voltages to ground. To properly guard against ESD damage and
shocks, the wrist strap and cord must operate effectively. If no wrist strap is available, ground
yourself by touching the metal part of the chassis.
Caution
between 1 to 10 megohms (Mohms).
Preparing to Connect to a Network
When setting up your switch with a router card, consider distance limitations and potential
electromagnetic interference (EMI) as defined by the EIA.
Warning
treated like telephone-network voltage (TNV) circuits. Avoid connecting SELV circuits to TNV
circuits. (To see translated versions of this warning, refer to the appendix "Translated Safety
Warnings" in the Catalyst 3100 Configuration and Installation Guide.)
Console Port
The switch has a DB-9 console port that automatically detects baud rate. The default is 9600 baud;
other supported baud rates are 1200, 2400, 4800, 19200, 38400, and 57600. Refer to the Catalyst
3100 Installation and Configuration Guide for detailed pin assignments for the cables you can use
on the console port
Console Pin Assignments
Table 4 and Table 5 and two figures (Figure 2 and Figure 3) detail pin-assignment information for
the cables you can use on the console port of the switch.
Terminal Connection
For a terminal connection, use a null-modem cable or a straight cable (EIA-232) with a null modem
adapter attached. Refer to the Catalyst 3100 Configuration and Installation Guide for the EIA-232
cable description.
4 Router Card (WS-X3011) Configuration Note
— Turn OFF power to the system.
— If possible, send another person to get medical aid. Otherwise, assess the condition of the
victim and then call for help.
— Determine if the person needs rescue breathing or external cardiac compressions; then take
appropriate action.
For safety, periodically check the resistance value of the antistatic strap, which should be
The auxiliary ports contain safety extra-low voltage (SELV) circuits. BRI circuits are
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