Replacing Connections to M120 Routing Engine Interface Ports
The ports on the craft interface connect the Routing Engine to external management
devices (see Figure 76 on page 206).
Figure 76: M120 Routing Engine Interface Ports and Alarm Relay Contacts
To replace the cables that connect to the ports:
•
Replacing the Management Ethernet Cable on the M120 Routing Engine on page 206
•
Replacing the Console or Auxiliary Cable on the M120 Routing Engine on page 207
•
Replacing Alarm Relay Wires on the M120 Craft Interface on page 208
Replacing the Management Ethernet Cable on the M120 Routing Engine
For cable specifications, see “Routing Engine Interface Cable and Wire Specifications for
the M120 Router” on page 105. To replace the management Ethernet Cable:
1. Press the tab on the connector and pull the connector straight out of the ETHERNET
port. Figure 77 on page 206 shows the connector.
2. Disconnect the cable from the network device.
3. Plug one end of the replacement cable into the appropriate ETHERNET port.
Figure 78 on page 207 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).
4. Plug the other end of the cable into the network device.
Figure 77: M120 Ethernet Cable Connectors
Copyright © 2018, Juniper Networks, Inc.206
M120 Multiservice Edge Router Hardware Guide