User manual JUNIPER NETWORKS M120

[. . . ] M120 Multiservice Edge Router Hardware Guide Published: 2010-10-15 Copyright © 2010, Juniper Networks, Inc. Juniper Networks, Inc. 1194 North Mathilda Avenue Sunnyvale, California 94089 USA 408-745-2000 www. juniper. net This product includes the Envoy SNMP Engine, developed by Epilogue Technology, an Integrated Systems Company. This program and its documentation were developed at private expense, and no part of them is in the public domain. This product includes memory allocation software developed by Mark Moraes, copyright © 1988, 1989, 1993, University of Toronto. [. . . ] Install a washer and retaining nut over each threaded stud on each craft interface flange. 5. Reinstall the front upper fan tray, if it was removed. NOTE: When you install the craft interface in an operating router, allow several minutes for the LEDs on the craft interface to reflect the current state of the router. Figure 57: Installing the M120 Craft Interface Related Documentation · · · Preventing Electrostatic Discharge Damage to an M120 Router on page 192 M120 Craft Interface Description on page 23 Alarm Relay Contacts on the M120 Craft Interface on page 28 Copyright © 2010, Juniper Networks, Inc. 131 M120 Multiservice Edge Router Hardware Guide Replacing Connections to M120 Routing Engine Interface Ports The ports on the craft interface connect the Routing Engine to external management devices (see Figure 58 on page 132). Figure 58: 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 132 Replacing the Console or Auxiliary Cable on the M120 Routing Engine on page 133 Replacing Alarm Relay Wires on the M120 Craft Interface on page 133 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 246. To replace the management Ethernet Cable: 1. Press the tab on the connector and pull the connector straight out of the ETHERNET port. Plug one end of the replacement cable into the appropriate ETHERNET port. Figure 60 on page 132 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 59: M120 Ethernet Cable Connectors Figure 60: M120 Routing Engine Interface Ports and Alarm Relay Contacts 132 Copyright © 2010, Juniper Networks, Inc. Chapter 14: Replacing M120 Hardware Components 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. For cable specifications, see "Routing Engine Interface Cable and Wire Specifications for the M120 Router" on page 246. To connect a management console or auxiliary device: 1. Plug one end of the replacement cable into the appropriate CONSOLE or AUX port. Figure 61 on page 133 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. Figure 61: M120 Routing Engine Interface Ports and Alarm Relay Contacts Replacing Alarm Relay Wires on the M120 Craft Interface To connect the router to external alarm-reporting devices, attach wires to the RED and YELLOW relay contacts on the craft interface. 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. 2 They accept wire of any gauge between 28-AWG and 14-AWG (0. 08 and 2. 08 mm ), 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 62 on page 134): 1. Disconnect the existing wire at the external device. 2 2. Prepare the required length of replacement wire with gauge between 28-AWG and 14-AWG (0. 08 and 2. 08 mm ). 3. 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. 4. 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. [. . . ] To return a hardware component: 1. Determine the part number and serial number of the component. 2. Obtain an RMA number from the Juniper Networks Technical Assistance Center (JTAC). You can send e-mail or telephone as described above. 3. Provide the following information in your e-mail message or during the telephone call: · · · Part number and serial number of component Your name, organization name, telephone number, and fax number Description of the failure 4. The support representative validates your request and issues an RMA number for return of the component. 5. [. . . ]