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Cisco - Connecting a Terminal to the Console Port on Catalyst Switches

Console Port Mode Switch

The console port mode switch allows you to connect either a terminal (DTE) or a modem (DCE)

depending on the mode that is selected and the cable that you are using.

Note: The cable and adapters shipped with the Supervisor Module II G and Supervisor Module III G are

the same ones used on the Cisco 2500 series routers (and other Cisco products).

Use the console port mode switch as follows:

Mode 1: Press to the in position. Use this mode to connect a terminal to the port using the console

cable and DTE adapter (labeled "Terminal") that shipped with the Supervisor Engine. You may

also use this mode to connect a modem to the port using the console cable and the DCE adapter

(labeled "Modem") that shipped with the switch.

Mode 2: Depress to the out position. Use this mode to connect a terminal to the port using the

Supervisor Engine III console cable (not provided).

Figure: EIA/TIA-232 RJ-45 Adapter Cable Connector

Table F-1: Console Port Signaling and Cabling Using a DB9 Adapter

Switch

RJ45-RJ45

Console

Rollover Cable

(DTE)

RJ45

Signal

RTS

1¹

DTR

TxD

GND

RxD

DSR

CTS

8¹

¹Pin 1 is connected internally to Pin 8.

Table F-2: Console Port Signaling and Cabling Using a DB25 Adapter

http://www.cisco.com/warp/public/473/9.html (12 of 19) [9/4/2003 12:36:03 PM]

RJ45-to-DB9

Adapter

RJ45

DB9 Pin

Terminal

(DTE)

Signal

CTS

DSR

RxD

GND

TxD

DTR

RTS