Upgrading the PTX5000 Host Subsystem

Before you replace a Routing Engine, you must take the host subsystem offline. The host subsystem is taken offline and brought online as a unit. Be aware of the effect of taking a host subsystem offline on traffic, forwarding, and routing. See Understanding the Effect of Taking the PTX5000 Host Subsystem Offline.

To take a host subsystem offline:

1. Determine whether the Routing Engine to be replaced is currently functioning as the primary or as the backup, using one of the following methods:

   • Check the HOST 0 and HOST 1 LEDs on the craft interface. If the green MASTER LED is lit, the corresponding host subsystem is functioning as the primary.

   • Check the MASTER LED on the Control Board. If the blue MASTER LED is lit, the host subsystem is functioning as the primary.

   • Issue the show chassis routing-engine command. The primary Routing Engine is designated Master in the Current state field.

2. If the Routing Engine to be replaced is currently functioning as the primary, switch it to backup by using the CLI command:

3. Halt the host subsystem.

   Note:

   The request vmhost halt command halts the Routing Engine on the control plane from which it was issued. The command shuts down the Routing Engine cleanly, so its state information is preserved. The SIBs might continue forwarding traffic for approximately 5 minutes after the request vmhost halt command has been issued. To reboot a Routing Engine that has been halted, you must connect through the console.

   On the console or other management device connected to the other Routing Engine, enter CLI operational mode and issue the following command.

   n is 0 or 1 for the slot number of the host subsystem being taken offline.

4. Verify that the Control Board is offline:

Figure 1: Removing the RE-PTX-X8-64G Routing Engine

Remove the backup Routing Engine from the chassis:

Figure 2: Removing a Control Board

To remove a Control Board (see Figure 2):

1. Place an electrostatic bag or antistatic mat on a flat, stable surface.

2. Attach an ESD grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.

3. Label and disconnect the cables.

4. Rotate the ejector handles counterclockwise on both sides of the Control Board faceplate.

5. Grasp the ejector handles and slide the Control Board about halfway out of the chassis.

6. Place one hand underneath the Control Board to support it and slide it completely out of the chassis. Place it on the antistatic mat.

   CAUTION:

   Do not stack hardware components on one another after you remove them. Place each component on an antistatic mat resting on a stable, flat surface.

Figure 3: Installing the CB2-PTX Control Board

To install a Control Board (see Figure 3):

1. Attach an ESD grounding strap to your bare wrist, and connect the strap to an approved site ESD grounding point.

2. Carefully align the bottom and then the top edges of the Control Board with the guides inside the chassis.

3. Slide the Control Board into the chassis, carefully ensuring that it is correctly aligned.

4. Twist both ejector handles clockwise to seat the host subsystem until the ejectors latch into the faceplate.

5. To verify that the Control Board is installed correctly and functioning normally:

   1. Connect an Ethernet cable to the HOST/ETHERNET port on the Control Board. If the host subsystem is operational, the ACT port LED is lit to indicate Ethernet activity. If you can run the CLI from a management device attached to the Control Board, the Control Board is installed correctly.

   2. Verify that the green OK LED on the Control Board faceplate is lit steadily green. The green OK LED should light steadily a few minutes after the Control Board is installed.

   3. Verify that the FAIL on the Control Board faceplate is not lit. If the FAIL LED is lit steadily, remove and install the Control Board again. If the FAIL LED still lights steadily, the Control Board is not functioning properly. Contact your customer support representative.

   4. To verify that the Control Board is Online, use the show chassis environment cb command.

Figure 4: Installing the RE-PTX-X8-64G Routing Engine

To install a Routing Engine (see Figure 4):

1. Attach an ESD grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.

2. Ensure that the ejector handles are not in the locked position. If necessary, press the red tabs and flip the ejector handles outward.

3. Place one hand underneath the Routing Engine to support it. With the other hand, grasp one of the ejector handles on the faceplate.

4. Carefully align the sides of the Routing Engine with the guides inside the opening on the Control Board.

5. Slide the Routing Engine into the chassis until you feel resistance, and then press the Routing Engine's faceplate until it engages the connectors.

6. Press both the ejector handles inward to seat the Routing Engine.

   The Routing Engine might require several minutes to boot. If the router is powered on and the Routing Engine's corresponding Control Board is functioning normally, the Routing Engine comes online automatically.

7. Reconnect the cables.

8. The Routing Engine RE1 comes up as the backup Routing Engine.

Configure the upgraded Routing Engine:

1. You then switch over this backup Routing Engine to make it the primary Routing Engine. Use the request chassis routing-engine master (acquire | release | switch) command to switchover the RE1-CB1 to become primary host subsystem. All FPCs reboot after this step.

2. Replace the Routing Engine RE0 with the RE-PTX-X8-64G Routing Engine.

3. Use the request chassis routing-engine master (acquire | release | switch) command to make the Routing Engine RE0 as the backup Routing Engine.

4. Configure the new backup Routing Engine RE0 by using the commit synchronize command to copy the configuration to the backup Routing Engine.

Before you replace a Routing Engine, you must take the host subsystem offline. The host subsystem is taken offline and brought online as a unit. Be aware of the effect of taking a host subsystem offline on traffic, forwarding, and routing. See Understanding the Effect of Taking the PTX5000 Host Subsystem Offline.

Halt the host subsystem.

To remove the Routing Engine from the chassis:

To remove a Control Board (see Figure 6):

To install a Control Board (see Figure 7):

To install the Routing Engine (see Figure 8):

Verify that the Routing Engine is installed correctly and functioning properly: