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Upgrading to the Control Board-Routing Engine REMX2K-X8-64G in a Redundant Host Subsystem

A redundant host subsystem consists of a primary Routing Engine-Control Board (CB-RE) (RE0) and a backup CB-RE (RE1). To upgrade the host subsystem to use the REMX2K-X8-64G CB-RE, you must first uninstall the backup CB-RE and install the REMX2K-X8-64G CB-RE, which then becomes the backup CB-RE. Configure this backup CB-RE as the primary CB-RE. Then replace the other CB-RE and configure it as the backup CB-RE.

Note:

Save the router configuration before upgrading the CB-RE.

Taking the Host Subsystem Offline

To take the host subsystem offline perform the following steps:

  1. On the external management device connected to the CB-RE, issue the request system halt other-routing-engine operational mode command to offline the backup CB-RE. The command shuts down the CB-RE 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 CB-RE completely.

Removing the Backup CB-RE

To remove a CB-RE (see Figure 1):

Note:

Remove the CB-RE as a unit.

CAUTION:

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

CAUTION:

Before you replace a CB-RE, 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 handles outward simultaneously to unseat the CB-RE.
  4. Grasp the ejector handles, and slide the CB-RE about halfway out of the chassis.
  5. Place one hand underneath the CB-RE to support it, and slide it completely out of the chassis.
  6. Place the CB-RE on the antistatic mat or inside an antistatic bag.
  7. If you are not replacing the CB-RE immediately, install a blank panel over the empty slot.
Figure 1: Removing a CB-RERemoving a CB-RE

Installing the REMX2K-X8-64G CB-RE

To install a CB-RE:

  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 CB-RE from the electrostatic bag.
  3. Carefully align the sides of the CB-RE with the guides inside the chassis.
  4. Slide the CB-RE into the chassis until you feel resistance, carefully ensuring that it is correctly aligned.
  5. Grasp both ejector handles, and gently close them inward simultaneously until the CB-RE is fully seated.
  6. Check the LEDs on the CB-RE faceplate to verify that it is functioning normally.

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

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

  7. Check the status of the CB-RE by using the show chassis environment cb command.

The CB-RE might require several minutes to boot. After the CB-RE 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 CB-RE is functioning properly, the green ONLINE LED on the CB-RE lights steadily. If the red FAIL LED on the CB-RE lights steadily instead, remove and install the CB-RE again. If the red FAIL LED still lights steadily, the CB-RE is not functioning properly. Contact your customer support representative.

Verifying and Configuring the Upgraded CB-RE as the Primary

After replacing the backup CB-RE with the REMX2K-X8-64G CB-RE, perform the following steps:

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

Verifying and Configuring the Upgraded CB-RE as the Backup

After replacing the primary CB-RE with the REMX2K-X8-64G CB-RE, perform the following steps:

  1. Use the request chassis routing-engine master switch command to make the newly installed REMX2K-X8-64G CB-RE (RE0) the backup CB-RE.
  2. Use the commit synchronize command to copy the active configuration from the primary CB-RE to the backup CB-RE.

See Also