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Connecting the Cable to a Management Console or Auxiliary Device
To connect a serial cable to a management console or auxiliary device:
1.
Plug the RJ-45 end of the replacement serial cable into the CONSOLE or AUX port.
Figure 47 on page 104 shows the external device ports on the Routing Engine.
2. Plug the female DB-9 end into the console or auxiliary device's serial port.
3. Turn on the power to the console or auxiliary device.
Replacing DPCs and Transceivers
For instructions on replacing DPCs and SFP and XFP transceivers, see the following
sections:
■ Replacing a DPC on page 106
■ Removing an SFP or XFP Transceiver on page 110
■ Installing an SFP or XFP Transceiver on page 112
Replacing a DPC
DPCs are installed horizontally in the front of the router. The DPCs are hot-insertable
and hot-removable. When you remove a DPC, the router continues to function,
although the DPC being removed no longer functions. Before replacing a DPC, review
the information in “Holding a DPC” on page 75. A DPC weighs up to 13.1 lb (5.9 kg).
Be prepared to accept its full weight. To replace a DPC:
■ Removing a DPC on page 106
■ Installing a DPC on page 108
Removing a DPC
To remove a DPC (see Figure 49 on page 108):
1. Have ready a replacement DPC or DPC blank panel and an antistatic mat for the
DPC. Also have ready rubber safety caps for each DPC you are removing that
uses an optical interface.
2. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and
connect the strap to one of the ESD points on the chassis. For more information
about ESD, see “Preventing Electrostatic Discharge Damage” on page 130.
3. Label the cables connected to each port on the DPC so that you can later
reconnect the cables to the correct ports.
4. Use one of the following methods to take the DPC offline:
■ Press and hold the corresponding DPC online button on the craft interface.
The green OK LED next to the button begins to blink. Hold the button down
until the LED goes off.
■ Issue the following CLI command:
106 ■ Replacing DPCs and Transceivers
MX240 Ethernet Services Router Hardware Guide