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Configuring DC Power on a T4000 Router

 

After you have connected the DC power and initially configured the router, you must configure the number of input feeds if you connected fewer than six cables to the six-input DC power supply. You must also configure the input current for the DC power supply if you connected three 80-A cables to the six-input DC power supply.

For more information about configuring the DC power supply and the commands used in the procedures, see the T4000 Power Management Overview in the Junos OS Administration Library.

Configuring DC Power on a T4000 Router (Five 60-A Cables on a Six-Input DC Power Supply)

When you connect five cables on a six-input DC power supply, you must specify the number of input feeds connected in the software. If the number of physical input feeds receiving power does not match the number of configured input feeds, the router displays an alarm message.

  1. Configure the number of input feeds to indicate that five DC power cables are connected.
    Note

    The default number of input feeds is 6.

  2. (Optional) Use the show statement to display the configuration to verify that it is correct.
  3. Commit the configuration to activate it on the router, and exit configuration mode.

Configuring DC Power on a T4000 (Four 60-A Cables on a Six-Input DC Power Supply)

When you connect four cables on a six-input DC power supply, you must specify the number of input feeds connected in the software. If the number of physical input feeds receiving power does not match the number of configured input feeds, the router displays an alarm message.

  1. Configure the number of input feeds to indicate that four DC power cables are connected.
    Note

    The default number of input feeds is 6.

  2. (Optional) If the power has been underprovisioned for your configuration, some FPCs might not be brought online if the available power capacity is exceeded. When you reboot the router, FPCs are brought online based on the default setting of the fru-poweron-sequence command. You can use the fru-poweron-sequence command to change the default order in which FPCs are brought online when the router is rebooted. The default sequence is the numerical order of the FPC slots (0 through 7).
  3. (Optional) Use the show statement to display the configuration to verify that it is correct.
  4. Commit the configuration to activate it on the router, and exit configuration mode.

Configuring DC Power on a T4000 (Three 80-A Cables on a Six-Input DC Power Supply)

When you connect three 80-A DC power cables to six inputs using terminal jumpers to each power supply, you must specify the input current in the software. In addition, you must also indicate that six input feeds are used. If the number of physical input feeds receiving power does not match the number of configured inputs, the router displays an alarm message.

  1. Configure the number of input feeds to indicate that six feeds are used to connect the three 80-A DC power cables by means of terminal jumpers.
    Note

    The default number of input feeds is 6.

  2. Configure the input current to indicate that 40-A is used to provide input current. Each 80-A DC power cable connects to two inputs by means of a terminal jumper, with each input receiving approximately 40 amps.
    Note

    The default input current is 60-A.

  3. (Optional) If the power has been underprovisioned for your configuration, some FPCs might not be brought online if the available power capacity is exceeded. When you reboot the router, FPCs are brought online based on the default setting of the fru-poweron-sequence command. You can use the fru-poweron-sequence command to change the default order in which FPCs are brought online when the router is rebooted.
    Note

    The default is the numerical order of the FPC slots (0 through 7).

  4. (Optional) Use the show statement to display the configuration to verify that it is correct.
  5. Commit the configuration to activate it on the router and exit configuration mode.