Replacing a TXP-CB

1. Removing a TXP-CB
2. Installing a TXP-CB

Removing a TXP-CB

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

1. If the master Routing engine is installed in the TXP-CB to be replaced, switch it to the backup. See Understanding the Effect of Switching to a TX Matrix Plus or T1600 Backup Routing Engine.
2. Take the host subsystem offline. See Understanding the Effect of Taking the Host Subsystem Offline and Taking the Host Subsystem Offline.

   Note: If there is only one host subsystem, taking the host subsystem offline shuts down the TX Matrix Plus router.

3. Place an electrostatic bag or antistatic mat on a flat, stable surface.
4. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis. .
5. Label and disconnect the cables.
6. Remove the Routing Engine from the TXP-CB.
7. Release the latches on the ejector handles on both sides of the TXP-CB faceplate.
8. Flip the ejector handles outward to unseat the TXP-CB.
9. Grasp the ejector handles and slide the TXP-CB about halfway out of the chassis.
10. Place one hand underneath the TXP-CB 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 1: Removing a TXP-CB

Installing a TXP-CB

1. Attach an electrostatic discharge (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 host subsystem with the guides inside the chassis.
3. Slide the host subsystem into the chassis, carefully ensuring that it is correctly aligned.
4. Grasp both ejector handles and press them inward to seat the host subsystem until the ejectors latch into the faceplate.
5. Install the Routing Engine into the TXP-CB.

   Note: If power is applied to the Routing Engine and its corresponding TXP-CB is functioning normally, the TXP-CB comes online automatically.

6. Reconnect the cables.

7. To verify that the TXP-CB is installed correctly and functioning normally:

   • Connect an Ethernet cable to the ETHERNET port on the TXP-CB. 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 TXP-CB, the TXP-CB is installed correctly.
   • Verify that the green OK LED on the TXP-CB faceplate is lit steadily green. The green OK LED should light steadily a few minutes after the TXP-CB is installed.
   • Verify that the FAIL on the TXP-CB faceplate is not lit. If the FAIL LED is lit steadily, remove and install the TXP-CB again. If the FAIL LED still lights steadily, the TXP-CB is not functioning properly. Contact your customer support representative.
   • To verify that the TXP-CB is Online, use the show chassis environment cb sfc 0 command.

Figure 2: Installing a TXP-CB