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Replace the Routing and Control Board on the PTX12008

Maintaining the PTX12008 includes removing and installing the Routing and Control Board and removing solid-state drives.

The Routing and Control Board (RCB) in the PTX12008 is a hot-removable and hot-insertable field-replaceable unit (FRU) in a premium configuration. You can remove and replace the RCB without powering off the PTX12008 or disrupting the device functions. In a base configuration, you must install a second RCB before removing the first RCB to prevent the device from shutting down. The RCBs are installed in the RCB slots labeled RCB0 and RCB1 in the front panel of the chassis.

When you power on a router with a single RCB preinstalled in it, the RCB comes online as the primary RCB. The primary RCB powers on the Forwarding Engine Boards (FEBs) and the Flexible PIC Concentrators (FPCs). If you install the second RCB,the RCB comes online as the backup RCB.

When you power on a router for the first time with two RCBs installed, the RCB installed in slot RCB0 comes online as the primary RCB. This RCB then powers on the FEBs and the FPCs. The RCB installed in slot RCB1 comes online as the backup RCB by default. You can change this configuration by using the CLI.

The solid-state drives (SSDs) are located side-by-side under the opening in the top cover of an RCB.

Remove an RCB from the PTX12008

Before you remove an RCB:

  • Ensure that you understand how to prevent electrostatic discharge (ESD) damage. See Prevention of Electrostatic Discharge Damage.

  • Ensure that you have the following parts and tools available:

    • An ESD grounding strap—not provided

    • A replacement RCB

    • An antistatic bag or antistatic mat—not provided

To remove an RCB:

  1. Take the RCB offline. Use the request node (offline | online) command.
  2. Place an electrostatic bag or antistatic mat on a flat, stable surface.
  3. Wrap and fasten one end of the ESD grounding strap around your bare wrist and connect the other end of the strap to an ESD point on the front panel of the chassis.
    Figure 1: ESD Point on the Front Panel of the Chassis ESD Point on the Front Panel of the Chassis
  4. Simultaneously rotate the RCB handles counterclockwise to unseat the RCB.
  5. Grasp the handles and slide the RCB about halfway out of the chassis.
    Figure 2: Remove an RCB Remove an RCB
  6. Grasp each side of the RCB and slide it completely out of the chassis.
  7. Place the RCB on the antistatic mat or in the antistatic bag.
  8. If you are not replacing an RCB immediately, install a cover over the slot. To install the cover, place the cover in the slot and press it until it is fully seated. Do not operate the chassis without an RCB or a cover in place.

Install an RCB on the PTX12008

Before you install an RCB:

To install an RCB:

  1. Wrap and fasten one end of the ESD grounding strap around your bare wrist and connect the other end of the strap to an ESD point on the front panel of the chassis.
    Figure 3: ESD Point on the Front Panel of the Chassis ESD Point on the Front Panel of the Chassis
  2. If the RCB slot is covered, hold the handles on either sides and pull the slot cover gently out of the chassis. If there is an RCB installed in the slot, remove it (see Remove an RCB from the PTX12008).
  3. Remove the new RCB from the antistatic bag and inspect it for any damage before installing it into the chassis.
  4. Lift the RCB by its sides, being careful not to damage the connectors.
  5. Carefully align the sides of the RCB with the guides inside the RCB slot on the front panel of the chassis.
  6. Slide the RCB completely into the chassis, carefully ensuring that it is correctly aligned.
  7. Grasp both handles on the RCB and rotate them simultaneously clockwise until the RCB is fully seated and the handles are horizontal. The RCB begins the power-on sequence when fully seated.
    Figure 4: Install an RCB Install an RCB
  8. Check the POWER LED on its faceplate and the RCB LED on the status panel. Both LEDs should light steadily shortly after you install the RCB. If the POWER LED is blinking yellow, the power supply to the RCB might be insufficient. See Power Calculator to ensure that you have adequate power for the additional unit.

    You can also verify that the RCB is online by using the show chassis environment cb command.

Remove an SSD from the PTX12008 RCB

The SSDs are located side-by-side under the opening in the top cover of an RCB. If you need to return an RCB, you can remove the SSD to protect any sensitive information.

Before you remove an SSD:

  • Ensure that you understand how to prevent ESD damage. See Prevention of Electrostatic Discharge Damage.

  • Ensure that you have the following parts and tools available:

    • A Phillips (+) screwdriver, number 1—not provided

    • An antistatic bag or antistatic mat—not provided

To remove an SSD:

  1. Place an electrostatic bag or antistatic mat on a flat, stable surface.
  2. If the RCB from which you want to remove the SSD is installed in the chassis, remove it (see Remove an RCB from the PTX12008).
  3. Remove the screw from one end of the SSD by using a Phillips (+) screwdriver, number 1.
  4. Disengage the SSD from the connector at the other end.
  5. Remove the bush on the screw slot below the SSD.
  6. Place the SSD on the antistatic mat or in the antistatic bag.