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PICs for the M160 Router

PICs on an M160 router are hot-insertable and hot-removable, so you can remove and replace them without powering off the router. Removing a PIC does not affect router function, except that the PIC no longer receives or transmits data.

The procedures described in the following sections are for single-wide PICs only. For instructions for the quad-wide SONET/SDH OC192 PIC, see Installing or Replacing a Quad-Wide PIC.

Removing a PIC from an M160 Router

To remove a PIC from an M160 router, follow this procedure:

  1. Place an electrostatic bag or antistatic mat on a flat, stable surface to receive the PIC. If the PIC uses fiber-optic cable, have ready a rubber safety cap for each transceiver and cable.
  2. Attach an ESD strap to your bare wrist and connect the strap to one of the ESD points on the chassis.
  3. If the PIC has multiple ports, label the cable connected to each port so that you can later reconnect the cables correctly.
  4. Take the PIC offline by pressing and holding its offline button until its status LED lights red to indicate failure, which usually takes about 5 seconds. Some PICs have a single status LED and others have one LED per port; for more information, see the M160 PIC Guide. PICs on an Type 1 FPC have their offline buttons on the FPC card carrier and PICs on an Type 2 FPC have their offline buttons on the PIC faceplate.
  5. Disconnect the cables from the PIC. If the PIC uses fiber-optic cable, immediately cover each transceiver and the end of each cable with a rubber safety cap. Arrange the disconnected cables in the cable management system.
  6. Unscrew the thumbscrews at the top and bottom of the PIC faceplate simultaneously and at about the same rate (unscrewing the two screws alternately or at very different rates can cause the PIC to become lodged in the FPC slot, making it difficult to turn the screws).
  7. Slide the PIC out of the FPC (see Figure 14) and place it in the electrostatic bag or on the antistatic mat that you prepared in Step Step 1.

    Figure 14: Removing a PIC from an M160 Router

    Image g001203.gif

Installing a PIC in an M160 Router

To install a PIC in an M160 router, follow this procedure:

  1. Attach an ESD strap to your bare wrist and connect the strap to one of the ESD points on the chassis.
  2. Remove the PIC from its electrostatic bag and place it on an antistatic mat. If it connects to fiber-optic cable, verify that there is a rubber safety cap on each transceiver.
  3. Align the notches in the connector at the rear of the PIC with the guides in the PIC slot in the FPC and then slide the PIC in until it lodges firmly in the FPC (see Figure 15). 

    Be careful to insert the PIC straight into the FPC slot to avoid damaging the components on the bottom of the PIC.

  4. Tighten the thumbscrews at the top and bottom of the PIC faceplate simultaneously and at about the same rate (tightening the two screws alternately or at very different rates can cause the PIC to become lodged in the FPC slot, making it difficult to turn the screws). Verify that the PIC is seated properly.
  5. If any of the PICs on the FPC connect to fiber-optic cable, remove the rubber safety cap from each transceiver and cable.
  6. Insert the appropriate cables into the ports on the PIC. Secure the cables so that they are not supporting their own weight. Place excess cable out of the way in a neatly coiled loop, using the cable management system. Placing fasteners on a loop helps to maintain its shape.
  7. Press and hold the PIC offline button until its status LED lights green to indicate normal functioning, which usually takes about 5 seconds. Some PICs have a single status LED and others have one LED per port; for more information, see the M160 PIC Guide. PICs on an Type 1 FPC have their offline buttons on the FPC card carrier and PICs on an Type 2 FPC have their offline buttons on the PIC faceplate.

You can also use the following CLI command to confirm correct PIC functioning:

user@host> show chassis fpc pic-status fpc-slot

For more information, see the JUNOS Protocols, Class of Service, and System Basics Command Reference.

For a PIC to function, you must add the necessary statements for it to the router configuration. For instructions, see the JUNOS Network Interfaces and Class of Service Configuration Guide.

Figure 15: Installing a PIC in an M160 Router

Image g001202.gif


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