Installing and Removing a SIP

This chapter describes how to install or remove SIPs on the Cisco CRS-1 router. This chapter contains the following sections:

Handling SIPs

Each SIP is mounted to a metal carrier and is sensitive to electrostatic discharge (ESD) damage. Before you begin installation, read the Preparing to Install a SIP or a SPA. for a list of parts and tools required for installation.


Caution

Always handle the SIP by the carrier edges and handle; never touch the SIP components or connector pins (see the figure below).

Figure 1. Handling a SIP

A PLIM impedance carrier must be installed in each empty PLIM slot in the Cisco CRS-1 router chassis (see see the figure below). The impedance carrier preserves the integrity of the chassis and is required for EMI compliance and proper cooling in the chassis.

Figure 2. PLIM Impedance Carrier

Guidelines for SIP Installation and Removal

Guidelines for SIP installation and removal include the following:

  • Online insertion and removal (OIR) is supported, enabling you to remove and install SIPs and SPAs while the router is running. OIR is seamless to users on the network, maintains all routing information, and ensures session preservation. Notifying the software or resetting the power is not required. However, you have the option of using the shutdown command before removing a card.
  • Each SIP and its corresponding modular services card (MSC) function as a pair. If either card is removed, the other card is essentially powered down (although the router can still identify and inventory the cards).
  • SIPs are attached to the chassis through a pair of ejector levers and captive screws. The two ejector levers are used to release the SIP from its midplane connector. The ejector levers and captive screws are located on the upper and bottom ends of the faceplate of the card (see the figure below).
Figure 3. Ejector Levers and Captive Screws

1

Captive screw

2

Ejector lever


Caution

When you remove a SIP, always use the ejector levers to ensure that the connector pins disconnect from the midplane in the sequence expected by the router.


Caution

The router can indicate a hardware failure if you do not follow proper procedures. Remove or install only one SIP or PLIM at a time. Wait at least 15 seconds before removing or installing another SIP or PLIM.

SIP Installation and Removal

This section contains the following procedures:


Note
Refer to the Installing and Removing a SPA for information on removing and installing SPAs.

Removing a SIP

To remove a SIP from the line card chassis, the figure below and follow these steps:

    Step 1   Attach an ESD-preventive wrist strap and follow its instructions for use.
    Step 2   Identify the card to be replaced and unplug the interface cables connected to the card. Be sure to note the current connections of the cables to the ports on the SPAs installed in the SIP.
    DANGER

    Because invisible radiation may be emitted from the aperture of the port when no fiber cable is connected, avoid exposure to radiation and do not stare into open apertures. Statement 125

    Note    You can also keep the dust caps or covers on the laser optical bores to avoid radiation exposure.
    Step 3   Remove the SPAs from the SIP and set them aside.
    Step 4   Loosen the two captive screws holding the SIP in place.
    Step 5   Grasp the two card ejector levers and simultaneously pivot both ejector levers 90 degrees away from the front edge of the card carrier to unseat the SIP from the backplane.
    Step 6   Touching only the metal card carrier, slide the SIP from the slot and place it directly into an antistatic sack or other ESD-preventive container.
    Step 7   Insert another SIP, PLIM, or a PLIM impedance carrier into the empty card slot.
    What to Do Next

    Figure 4. Removing or Installing a SIP

    1

    Captive screw

    4

    Guide pins

    2

    Ejector lever

    5

    Direction of installation or removal

    3

    Septum

    Installing a SIP

    This section provides step-by-step instructions for installing a SIP. You can install a SIP in any slot not occupied by a Route Processor (RP) card (or a fan controller card on the 16-slot chassis only). If you install a new MSC or SIP, you must first remove the PLIM impedance carrier card from the available slot.


    Caution

    The system can indicate a hardware failure if you do not follow proper procedures. Remove or install only one SIP or PLIM at a time. Allow at least 15 seconds for the system to complete the preceding tasks before removing or installing another SIP or PLIM.

    DANGER

    During this procedure, wear grounding wrist straps to avoid ESD damage to the card. Do not directly touch the backplane with your hand or any metal tool, or you could shock yourself. Statement 94

    To install a SIP, follow these steps:

      Step 1   Attach an ESD-preventive wrist strap and follow its instructions for use.
      Step 2   Remove the SIP from its antistatic packaging.
      Step 3   Remove the PLIM or PLIM impedance carrier from the slot you need to fill and set it aside.
      Note    Remove only one PLIM impedance carrier and install one SIP at a time. Be sure to verify that each SIP is fully installed and secured before installing another card.
      Step 4   Grasp one of the septums that separate the SPA slots or one of the ejector levers with one hand and place your other hand under the SIP to support and guide it into the correct slot. Slide the card halfway into the correct slot. Avoid touching the card circuitry or any connectors.
      Step 5   Pivot both card ejector levers so the openings on the card ejector cams at the top and bottom of the SIP pass over the tabs on each side of the card cage slot.
      Caution   

      Verify that the openings on the card ejector cams pass over the tabs; otherwise, one or both ejector levers might bind when you attempt to close the ejector levers, thereby damaging or breaking one or both ejector levers.

      Step 6   Continue sliding the SIP into the card cage slot until the openings on the card ejector cams engage the tabs on each side of the card cage slot.
      Note    Guide pins exist that make initial contact with the backplane connector as you slide a SIP into its slot. After the guide pins make contact, continue pushing on the SIP until the card ejector levers begin pivoting forward, toward the front panel on the SIP.
      Step 7   To seat the card in the midplane connector, grasp both card ejector levers and pivot them inward toward the handle in the card carrier until they are flush against the front edge of the card carrier.
      Step 8   Engage both captive screws on the PLIM, and then tighten the screws. Tighten the locking thumbscrews on both sides of the SIP to a torque of between 8.3 and 11 inch-pounds (94 to 124 N-cm). Do not overtighten.
      Caution   

      Be sure to engage both captive screws on the SIP before you begin to tighten the screws; otherwise, the SIP might not seat properly.

      Caution   

      To ensure adequate space for additional PLIMs or SIPs, always tighten the captive screws on each newly installed PLIM or SIP before you insert another one. These screws also prevent accidental removal and provide proper grounding and EMI shielding for the system.

      Step 9   Install the SPAs. See the SPA Installation and Removal section.
      Step 10   Install the interface cables. We recommend that you clean the fiber-optic connections before attaching the cables. See http:/​/​www.cisco.com/​c/​en/​us/​td/​docs/​routers/​crs/​maintenance/​optics/​maintenance/​guide/​crs_​opt.html for cleaning instructions.
      Step 11   If this SIP is new, configure it for operation. For instructions, see Cisco IOS XR Interface and Hardware Component Configuration Guide for your software release. For command syntax, refer to Cisco IOS XR Interface and Hardware Component Command Reference.

      DANGER

      Because invisible radiation may be emitted from the aperture of the port when no fiber cable is connected, avoid exposure to radiation and do not stare into open apertures. Statement 125

      Note    You can also keep the dust caps or covers on the laser optical bores to avoid radiation exposure.