Technical Documentation
Replacing the T640 Connections to Routing Engine Interface Ports
The ports on the CIP connect the Routing Engine to external management devices (see Figure 1).
Figure 1: Routing Engine Interface Ports and Alarm Relay Contacts
To replace the cables that connect to the ports, perform the procedures described in the following topics:
Replacing the T640 Management Ethernet Cable
To replace the management Ethernet cable:
- Press the tab on the connector and pull the connector straight out of the ETHERNET port. Figure 2 shows the connector.
- Disconnect the cable from the network device.
- Plug one end of the replacement cable into the appropriate ETHERNET port. The ports labeled HOST 0 connect to the Routing Engine in the upper Routing Engine slot (RE0), and the ports labeled HOST 1 connect to the Routing Engine in the lower Routing Engine slot (RE1).
- Plug the other end of the cable into the network device.
Figure 2: Ethernet Cable Connectors
Replacing the T640 Console or Auxiliary Cable
To use a system console to configure and manage the Routing Engine, connect it to the appropriate CONSOLE port on the CIP. To use a laptop, modem, or other auxiliary device, connect it to the appropriate AUXILIARY port on the CIP. Both ports accept a cable with an RJ-45 connector. One RJ-45/DB-9 cable is provided with the router. If you want to connect a device to both ports, you must supply another cable.
To connect a management console or auxiliary device:
- Plug one end of the replacement cable into the appropriate CONSOLE or AUXILIARY port. Figure 3 shows the external device ports on the CIP. The ports labeled HOST 0 connect to the Routing Engine in the upper Routing Engine slot (RE0), and the ports labeled HOST 1 connect to the Routing Engine in the lower Routing Engine slot (RE1).
- Plug the other end of the cable into the device's serial port.
Figure 3: Routing Engine Console
Replacing the T640 Alarm Relay Wires
To connect the router to external alarm-reporting devices, attach wires to the RED ALARM and YELLOW ALARM relay contacts on the CIP. 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 router. They accept wire of any gauge between 28-AWG and 14-AWG (0.08 and 2.08 mm2), which is not provided. Use the wire gauge appropriate for the external device you are connecting.
To replace the wires connecting to an alarm-reporting device (see Figure 4):
- Disconnect the existing wire at the external device.
- Prepare the required length of replacement wire with gauge between 28-AWG and 14-AWG (0.08 and 2.08 mm2).
- Using a 2.5-mm flat-blade screwdriver, loosen the small screws on the face of the terminal block, and remove the block from the relay contact.
- Using the 2.5-mm flat-blade screwdriver, loosen the small screws on the side of the terminal block. Remove existing wires from the slots in the front of the block, and insert replacement wires. Tighten the screws to secure the wire.
- 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.
- Attach the other end of the wires to the external device.
Figure 4: Routing Engine Alarm Relay Wires
