Connecting the Services Gateway to Management and Alarm Devices

After you have installed the services gateway into the rack, attach one or more external devices to the ports on the craft interface that connect to the Routing Engines for management and service operations (see Figure 30). For specifications for the cable accepted by the Routing Engine management ports, see Routing Engine Interface Cable and Wire Specifications.

Figure 30: Routing Engine Management Ports

To connect external devices to the Routing Engine management ports, perform the procedures described in the following sections:

• Connecting to a Network for Out-of-Band Management
• Connecting to a Management Console or Auxiliary Device
• Connecting to an External Alarm-Reporting Device

Connecting to a Network for Out-of-Band Management

To connect the Routing Engine to a network for out-of-band management, connect an Ethernet cable with RJ-45 connectors to the ETHERNET port on the Routing Engine. One such cable is provided with the device. For cable specifications, see Routing Engine Interface Cable and Wire Specifications. Follow this procedure:

1. Turn off the power to the management device.
2. Plug one end of the Ethernet cable (Figure 31 shows the connector) into the appropriate ETHERNET port on the Routing Engine. Figure 30 shows the external device ports on the Routing Engine. 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).
3. Plug the other end of the cable into the network device.

Figure 31: Routing Engine Ethernet Cable Connector

Connecting to a Management Console or Auxiliary Device

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

To connect a management console or auxiliary device:

1. Turn off the power to the console or auxiliary device.
2. Plug one end of the Ethernet cable (Figure 32 shows the connector) into the appropriate AUX port on the Routing Engine. Figure 30 shows the external device ports on the Routing Engine. 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).
3. Plug the female DB-9 end into the device's serial port.

Figure 32: Console and Auxiliary Cable Connector

Connecting to an External Alarm-Reporting Device

To connect the device to external alarm-reporting devices, attach wires to the RED and YELLOW relay contacts on the craft interface, see Figure 33. A system condition that triggers the red or yellow alarm LED on the craft interface also activates the corresponding alarm relay contact.

The terminal blocks that plug into the alarm relay contacts are supplied with the device. They accept wire of any gauge between 28-AWG and 14-AWG (0.08 and 2.08 mm²), which is not provided. Use the gauge of wire appropriate for the external device you are connecting.

To connect an external device to an alarm relay contact (see Figure 33):

1. Prepare the required length of wire with gauge between 28-AWG and 14-AWG (0.08 and 2.08 mm²).
2. While the terminal block is not plugged into the relay contact, use a 2.5 mm flat-blade screwdriver to loosen the small screws on its side. With the small screws on its side facing left, insert wires into the slots in the front of the block based on the wiring for the external device. Tighten the screws to secure the wire.
3. Plug the terminal block into the relay contact and use a 2.5 mm flat-blade screwdriver to tighten the screws on the face of the block.
4. Attach the other end of the wires to the external device.

To attach a reporting device for the other kind of alarm, repeat the procedure.

Figure 33: Alarm Relay Contacts