• Supported Platforms
• M120 Routers

• Related Topics
• Connecting the M120 Router to an External Alarm-Reporting Device
• Preventing Electrostatic Discharge Damage to an M120 Router
• Routing Engine Interface Ports and Status Indicators on the M120 Craft Interface

Replacing the Console or Auxiliary Cable on the M120 Routing Engine

To use a system console to configure and manage the Routing Engine, connect it to the appropriate CONSOLE port on the craft interface. To use a laptop, modem, or other auxiliary device, connect it to the appropriate AUX port on the craft interface. Both ports accept a cable with an RJ-45 connector. One RJ-45/DB-9 cable is provided with the router. To connect a device to the other port, you must supply another cable. For cable specifications, see Routing Engine Interface Cable and Wire Specifications for the M120 Router.

To connect a management console or auxiliary device:

1. Plug one end of the replacement cable into the appropriate CONSOLE or AUX port. Figure 1 shows the external device ports on the craft interface. The ports labeled 0 connect to the Routing Engine in the left Routing Engine slot (RE0), and the ports labeled 1 connect to the Routing Engine in the right Routing Engine slot (RE1).
2. Plug the other end of the cable into the device's serial port.