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Replacing a TX Matrix Plus CXP Cable

 
  1. Removing a TX Matrix Plus CXP Cable

  2. Installing a CXP Cable

Removing a TX Matrix Plus CXP Cable

To remove a CXP cable Figure 1:

  1. Disable the TXP-F13-3D SIB port by issuing the request chassis sib optics sfc command. For example:
    request chassis sib optics sfc 0 sib-slot 0 optics-slot 0 disable
  2. Disable the TXP-LCC-3D SIB port by issuing the request chassis sib optics lcc command. For example:
    request chassis sib optics lcc 0 sib-slot 0 optics-slot 0 disable
  3. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the TX Matrix Plus chassis.
  4. Remove the CXP cable from the CXP transceiver in the TXP-F13-3D SIB.
  5. Install dust covers on the CXP cable and CXP transceiver. Align the dust cover with the cable or transceiver, and carefully press them together until they stop. The cover and the cable connector are keyed to ensure proper mating. Caution

    During maintenance or replacement procedures, small deposits of oil, dust, and debris can enter the CXP cables and CXP transceivers.

  6. Remove the CXP cable from the TX Matrix Plus rear cable management system.
  7. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the line-card chassis.
  8. Remove the CXP cable from the CXP transceiver in the TXP-LCC-3D SIB.
  9. Remove the CXP cable from the LCC rear cable management system.
Figure 1: CXP cable
CXP cable

Installing a CXP Cable

Note

You must use the same length for every switching plane cable from a particular line-card chassis to the TX Matrix Plus router. However, you do not need to use the same length for all switching plane cables within a routing matrix.

  1. Attach a label to each end of the replacement CXP cable to help you identify the corresponding TXP-F13-3D SIB port and TXP-LCC-3D SIB port.
  2. Make sure that the port is offline.Warning

    Do not look directly into a switching plane port or a connector at the end of a switching plane cable attached to a switching plane port. The fiber optics emit laser light that can damage your eyes.

  3. Remove the dust cover from one end of the CXP cable and the CXP transceiver in the TXP-F13-3D SIB. Store the dust covers in a dust-free resealable plastic bag.Caution

    Keep the dust cover on the other end of the cable to be routed to the LCC.

    Caution

    During maintenance or replacement procedures, small deposits of oil, dust, and debris can enter the fiber-optic array switching plane ports and the fiber-optic array cable connectors. If a dust cover is missing from a fiber-optic array switching plane port and the fiber-optic array cable connector, clean it.

  4. Insert the CXP cable into the CXP transceiver in the TXP-F13-3D SIB.
  5. Pull the latch for the cable management clamp on the TX Matrix Plus rear cable management system (Figure 3) toward you to release it.
  6. Place the CXP cable upward into the TX Matrix Plus cable management system. Route the cable upward toward the comb assembly on top of the chassis (Figure 4). Caution

    You must maintain a minimum bend radius of 4 in. (10.2 cm) short term, and 3 in. (7.6 cm) long term.

  7. Route the other end of the CXP cable to the LCC.
  8. Remove the dust cover from the other end of the CXP cable and the CXP transceiver in the TXP-LCC-3D SIB. Store the dust covers in a dust-free resealable plastic bag.
  9. Connect the CXP cable to the CXP transceiver in the TXP-LCC-3D SIB.
  10. Arrange the CXP cable in the LCC rear cable management system (Figure 6). Ensure that the CXP cable does not interfere with system airflow and maintenance access.

    For an illustration of airflow through the LCC, see the T1600 Core Router Hardware Guide or T4000 Core Router Hardware Guide.

  11. Enable the TXP-F13-3D SIB port by issuing the request chassis sib optics sfc command. For example:
    request chassis sib optics sfc 0 sib-slot 0 optics-slot 0 enable
  12. Enable the TXP-LCC-3D SIB port by issuing the request chassis sib optics lcc command. For example:
    request chassis sib optics lcc 0 sib-slot 0 optics-slot 0 enable
  13. Verify that the CXP cable is installed correctly and that the SIBs and cable are functioning normally.
    • If both the LINK and RxPWR LEDs next to the TXP-F13-3D SIB and TXP-LCC-3D SIB ports do not steadily light green, use the CLI to determine the status of the TXP-F13-3D SIB.

    • Verify that the TXP-F13-3D SIBs and TXP-LCC-3D SIBs are online by issuing the show chassis sibs command:

Figure 2: Installing a CXP Cable into a CXP Transceiver in a TXP-F13-3D SIB
Installing
a CXP Cable into a CXP Transceiver in a TXP-F13-3D SIB
Figure 3: Routing the CXP Cables in the TX Matrix Plus Rear Cable Management System
Routing the CXP Cables in
the TX Matrix Plus Rear Cable Management System
Figure 4: Routing the CXP Cables in the TX Matrix Plus Comb Assembly
Routing the
CXP Cables in the TX Matrix Plus Comb Assembly
Figure 5: Installing a CXP Cable in a CXP Transceiver in a TXP-LCC-3D SIB
Installing
a CXP Cable in a CXP Transceiver in a TXP-LCC-3D SIB
Figure 6: Routing the Switching Plane Cables in the Line-Card Chassis Rear Cable Management System
Routing the Switching
Plane Cables in the Line-Card Chassis Rear Cable Management System
Figure 7: Using Soft Band Straps to Secure Switching Plane Cables
Using
Soft Band Straps to Secure Switching Plane Cables