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Maintaining Host Subsystem components

Replacing an MX2008 RCB

Removing an MX2008 RCB

The MX2008 host subsystem consists of two Routing and Control Boards (RCBs). The RCB is an integrated board and a single FRU that provides Routing Engine and Control Board functionality and supports virtualization.

To remove an RCB (see Figure 1):

Note:

You can remove the RCB as a unit.

CAUTION:

Before removing an RCB, ensure that you know how to operate the ejector handles properly to avoid damage to the equipment.

CAUTION:

Before you replace an RCB, you must take the host subsystem offline. If there is only one host subsystem, taking the host subsystem offline shuts down the router.

  1. Take the host subsystem offline.
  2. Place an electrostatic bag or antistatic mat on a flat, stable surface.
  3. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
  4. Open the ejector handle outward to unseat the RCB.
  5. Grasp the ejector handle, and slide the RCB about halfway out of the chassis.
  6. Place one hand underneath the RCB to support it, and slide it completely out of the chassis.
  7. Place the RCB on the antistatic mat or into an antistatic bag.
  8. If you are not replacing the RCB immediately, install a blank panel over the empty slot.
Figure 1: Removing a RCBRemoving a RCB

Installing an MX2008 RCB

To install an MX2008 RCB (see Figure 2):

  1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
  2. Remove the RCB from the electrostatic bag.
  3. Carefully align the sides of the RCB with the guides inside the chassis.
  4. Slide the RCB into the chassis until you feel resistance, carefully ensuring that it is correctly aligned.
  5. Grasp the ejector handle, and gently close it inward simultaneously until the RCB is fully seated.
  6. Check the LEDs on the RCB faceplate to verify that it is functioning normally.

    • The green OK/FAIL LED should light steadily a few minutes after the RCB is installed.

    • If the OK/FAIL LED is red, remove and install the RCB again. If the OK/FAIL LED still lights steadily, the RCB is not functioning properly. Contact your customer support representative. See Contact Customer Support.

  7. Check the status of the RCB by using the show chassis routing-engine command:
Figure 2: Installing an MX2008 RCBInstalling an MX2008 RCB

See Also

Upgrading the MX2008 Routing and Control Board (RCBs) in a Redundant Host Subsystem

A redundant host subsystem consists of a primary RCB (RE0) and a backup RCB (RE1). To upgrade the host subsystem to use the REMX2008-X8-64G, you must first uninstall the backup RCB and install the REMX2008-X8-64G RCB, which then becomes the backup RCB. Configure this backup RCB as the primary RCB. Then replace the other RCB and configure it as the backup RCB.

Note:

Save the router configuration before upgrading the RCB.

Taking the Host Subsystem Offline

To take the host subsystem offline perform the following steps:

  1. On the external management device connected to the RCB, issue the request vmhost power-off other-routing-engine operational mode command to offline the backup RCB. The command shuts down the RCB cleanly by preserving the state information.

    Wait until a message appears on the console confirming that the operating system has halted.

  2. Take the Control board offline by using the request chassis cb slot 0/1 offline operational mode command. The command shuts down the RCB completely.

Removing the Backup RCB

To remove an RCB (see Figure 3):

Note:

Remove the RCB as a unit.

CAUTION:

Before removing an RCB, ensure that you know how to operate the ejector handles properly to avoid damage to the equipment.

CAUTION:

Before you replace an RCB, you must take the host subsystem offline. If there is only one host subsystem, taking the host subsystem offline shuts down the router.

  1. Place an electrostatic bag or antistatic mat on a flat, stable surface.
  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.
  3. Open the ejector handle outward to unseat the RCB.
  4. Grasp the ejector handle, and slide the RCB about halfway out of the chassis.
  5. Place one hand underneath the RCB to support it, and slide it completely out of the chassis.
  6. Place the RCB on the antistatic mat or inside an antistatic bag.
  7. If you are not replacing the RCB immediately, install a blank panel over the empty slot.
Figure 3: Removing a RCBRemoving a RCB

Installing the REMX2008-X8-64G RCB

To install an RCB:

  1. Attach an ESD grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
  2. Remove the RCB from the electrostatic bag.
  3. Carefully align the sides of the RCB with the guides inside the chassis.
  4. Slide the RCB into the chassis until you feel resistance, carefully ensuring that it is correctly aligned.
  5. Grasp the ejector handle, and gently close it inward until the RCB is fully seated.
  6. Check the LEDs on the RCB faceplate to verify that it is functioning normally.

    • The green ONLINE LED should blink green initially and light steadily a few minutes after the RCB is installed.

    • If the OK/FAIL LED is yellow, remove and install the RCB again. If the OK/FAIL LED still lights steadily, the RCB is not functioning properly. Contact your customer support representative. See Contact Customer Support.

  7. Check the status of the RCB by using the show chassis environment cb command.

The RCB might require several minutes to boot. After the RCB boots, verify that it is installed correctly by checking the FAIL, RE0, and RE1 LEDs on the craft interface. If the router is operational and the RCB is functioning properly, the green ONLINE LED on the RCB lights steadily. If the red FAIL LED on the RCB lights steadily instead, remove and install the RCB again. If the red FAIL LED still lights steadily, the RCB is not functioning properly. Contact your customer support representative.

Verifying and Configuring the Upgraded RCB as the Primary

After replacing the backup RCB with the REMX2008-X8-64G RCB, perform the following steps:

  1. Verify that the REMX2008-X8-64G RCB is online by issuing the show chassis hardware and show chassis routing-engine |no-more commands.

    Verify the software by using the show vmhost status and show vmhost version commands.

  2. After you install the REMX2K-X8-64G RCB, the RCB is automatically powered on and comes up in amnesiac mode as it is loaded with factory defaults. After the RCB comes up in amnesiac mode, load the base configuration and commit.
  3. Configure the backup RCB by using the commit synchronize command to copy the configuration to the backup RCB.
  4. Use the request chassis routing-engine master switch command to make the REMX2008-X8-64G RCB (RE1) the primary RCB. All FPCs reboot after this step.

Verifying and Configuring the Upgraded RCB as the Backup

After replacing the primary RCB with the REMX2008-X8-64G RCB, perform the following steps:

  1. Use the request chassis routing-engine master switch command to make the newly installed REMX2008-X8-64G RCB (RE0) the backup RCB.
  2. Use the commit synchronize command to copy the active configuration from the primary RCB to the backup RCB.

See Also

Upgrading the MX2008 Routing and Control Board (RCBs) in a Nonredundant Host Subsystem

In a nonredundant host subsystem, only one RCB is present in the chassis. When you upgrade the RCB, taking the host subsystem offline shuts down the router. To upgrade the host subsystem with the MX2008 RCB (model number: REMX2008-X8-64G), you must uninstall the existing RCB and install the MX2008 RCB.

Note:

Save the router configuration before proceeding with the MX2008 RCB upgrade.

Taking the Host Subsystem Offline

To take the host subsystem offline perform the following steps:

  1. On the external management device connected to the Routing Engine, issue the request vmhost halt operational mode command. The command shuts down the Routing Engines cleanly by preserving their state information.

    Wait until a message appears on the console confirming that the operating system has halted.

  2. Take the Control board offline by using the request chassis cb slot 0/1 offline operational mode command. The command shuts down the RCB completely.

Removing the MX2008 RCB

To remove an RCB (see Figure 4):

Note:

Remove the RCB as a unit.

CAUTION:

Before removing a RCB, ensure that you know how to operate the ejector handles properly to avoid damage to the equipment.

CAUTION:

Before you replace a RCB, you must take the host subsystem offline. If there is only one host subsystem, taking the host subsystem offline shuts down the router.

  1. Place an electrostatic bag or antistatic mat on a flat, stable surface.
  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.
  3. Open the ejector handle outward to unseat the RCB.
  4. Grasp the ejector handle, and slide the RCB about halfway out of the chassis.
  5. Place one hand underneath the RCB to support it, and slide it completely out of the chassis.
  6. Place the RCB on the antistatic mat or inside an antistatic bag.
  7. If you are not replacing the RCB immediately, install a blank panel over the empty slot.
Figure 4: Removing an RCBRemoving an RCB

Installing the MX2008 RCB

To install the RCB (see Figure 5):

  1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
  2. Remove the RCB from the electrostatic bag.
  3. Carefully align the sides of the RCB with the guides inside the chassis.
  4. Slide the RCB into the chassis until you feel resistance, carefully ensuring that it is correctly aligned.
  5. Grasp the ejector handle, and gently close it inward until the RCB is fully seated.
  6. Check the LEDs on the RCB faceplate to verify that it is functioning normally.

    • The green ONLINE LED should blink green initially and light steadily a few minutes after the RCB is installed.

    • If the OK/FAIL LED is yellow, remove and install the RCB again. If the OK/FAIL LED still lights steadily, the RCB is not functioning properly. Contact your customer support representative. See Contact Customer Support.

  7. Check the status of the RCB by using the show chassis environment cb command.
Figure 5: Installing an RCBInstalling an RCB

The RCB might require several minutes to boot. After the RCB boots, verify that it is installed correctly by checking the FAIL, RE0, and RE1 LEDs on the craft interface. If the router is operational and the RCB is functioning properly, the green ONLINE LED on the RCB lights steadily. If the red FAIL LED lights steadily instead, remove the RCB and reinstall it. If the red FAIL LED on the RCB still lights steadily, the RCB is not functioning properly. Contact your customer support representative.

Verifying and Configuring the Upgraded MX2008 RCB

After replacing the RCB, perform the following steps:

  1. Verify that the \RCB is online by issuing the show chassis hardware and show chassis routing-engine |no-more commands.

    Verify the software by using the show vmhost status and show vmhost version commands.

  2. After you install the RCB, the RCB gets automatically powered on and comes up in amnesiac mode as it is loaded with factory defaults. After the RCB comes up in amnesiac mode, load the base configuration and commit.

See Also