Replacing Components

Replacing a Power Supply Module

The switch requires two power supplies for redundancy. With one power supply providing the necessary power for operations, replace the other power supply during operations as long as the new power supply has the same airflow direction as the other modules in the chassis.

Replace a power supply with another supported power supply that has the same power source type as the other installed power supply. Additionally, the airflow direction of the power supply must match or conform to the airflow direction of the installed fan modules. For the airflow direction used by the switch, see the coloring of the fan modules.

Replacing an AC Power Supply

Replace an AC power supply during operations as long as the other power supply provides power to the switch.

Before you begin


Note

Determine the airflow direction by looking at the coloring of the latch on each power supply. AC power supplies with burgundy latches have port-side intake airflow direction AC power supplies with blue latches have port-side exhaust airflow direction.

  • An AC power source must be within reach of the power cable that will be used with the replacement power supply. If you are using n+n power redundancy, there must be a separate power source for each power supply installed in the chassis.

  • There must be an earth ground connection to the chassis that you are installing the replacement module. AC power supplies connected to AC power sources are automatically grounded through their power cable.

Procedure

Step 1

Remove an AC power supply.

  1. Holding the plug for the power cable, pull the plug out from the power receptacle on the power supply and verify that both power supply LEDs are off.

  2. Grasp the power supply handle while pressing the colored release latch towards the power supply handle.

  3. Place your other hand under the power supply to support it while you slide it out of the chassis.

    Caution

     

    Do not touch the electrical connections on the back side of the module and prevent anything else from coming into contact with and damaging the connectors.

Step 2

Install the replacement power supply.

  1. Holding the replacement power supply with one hand underneath the module and the other hand holding the handle, turn the power supply so that its release latch is on the right side and align the back end of the power supply (the end with the electrical connections) to the open power supply slot before carefully sliding the power supply all the way into the slot until it clicks into place.

    Note

     

    If the power supply does not fit into the open slot, turn the module over before sliding it carefully into the open slot.

  2. Test the installation by trying to pull the power supply out of the slot without using the release latch.

    If the power supply does not move out of place, it is secured in the slot. If the power supply moves, carefully press it all the way into the slot until it clicks in place.

  3. Attach the power cable to the electrical outlet on the front of the power supply.

  4. Make sure that the other end of the power cable is attached to the appropriate power source for the power supply.

    Note

     

    Depending on the outlet receptacle on your power distribution unit, you might need the optional jumper cable to connect the switch to your outlet receptacle.

  5. Verify that the power supply is operational by making sure that the power supply LED is green.

Installing and Removing Small-Form Pluggable Modules

Before you begin


Warning

Statement 1008—Class 1 Laser Product

This product is a Class 1 laser product.


Note

We recommend that you wait 30 seconds between removal and insertion of an SFP on an interface module. This allows the transceiver software to initialize and synchronize with the standby RSP. Changing an SFP more quickly could result in transceiver initialization issues that disable the SFP.


Note

QSFP-DD optic (400G/200G) should have a wait time of 2 minutes between removal and reinsertion.

  • Do not remove the dust plugs from the SFP and SFP+ modules or the rubber caps from the fiber-optic cable until you are ready to connect the cable. The plugs and caps protect the module ports and cables from contamination and ambient light.

  • Removing and installing an SFP and SFP+ module can shorten its useful life. Do not remove and insert any SFP/SFP+ module more often than is necessary.

  • To prevent ESD damage, follow your normal board and component handling procedures when connecting cables to the switch and other devices.

  • When you insert several SFP and SFP+ modules in multiple ports, wait for 5 seconds between inserting each SFP/SFP+. This will prevent the ports from going into error / disabled mode. Similarly, when you remove an SFP and SFP+ from a port, wait for 5 seconds before reinserting it.

SUMMARY STEPS

  1. Attach an ESD-preventive wrist strap to your wrist and to an earth ground surface.
  2. Find the send (TX) and receive (RX) markings that identify the top of the SFP/SFP+ module.
  3. If the SFP/SFP+ module has a bale-clasp latch, move it to the open, unlocked position.
  4. Align the module in front of the slot opening and push until you feel the connector snap into place.
  5. If the module has a bale-clasp latch, close it to lock the SFP/SFP+ module in place.
  6. Remove the SFP and SFP+ dust plugs and save.
  7. Connect the SFP and SFP+ cables.

DETAILED STEPS

  Command or Action Purpose

Step 1

Attach an ESD-preventive wrist strap to your wrist and to an earth ground surface.

Step 2

Find the send (TX) and receive (RX) markings that identify the top of the SFP/SFP+ module.

On some SFP/SFP+ modules, the send and receive (TX and RX) markings might be shown by arrows that show the direction of the connection.

Step 3

If the SFP/SFP+ module has a bale-clasp latch, move it to the open, unlocked position.

Step 4

Align the module in front of the slot opening and push until you feel the connector snap into place.

Step 5

If the module has a bale-clasp latch, close it to lock the SFP/SFP+ module in place.

Step 6

Remove the SFP and SFP+ dust plugs and save.

Step 7

Connect the SFP and SFP+ cables.

Install and Remove OSFP/QSFP Transceiver Modules

This section provides the installation, cabling, and removal instructions for the Quad Small Form-Factor Pluggable transceiver modules. Refer to the Cisco Transceiver Modules Compatibility Information for additional details on optical transceivers.

Installing the Transceiver Module


Warning

Statement 1079—Hot Surface

This icon is a hot surface warning. To avoid personal injury, do not touch without proper protection.


Caution

The transceiver module is a static-sensitive device. Always use an ESD wrist strap or similar individual grounding device when handling transceiver modules or coming into contact with system modules.


Caution

Protect the transceiver ports by inserting clean dust caps (8000-QSFP-DCAP) into any ports not in use or that do not have optical modules plugged in. If optical modules are plugged in but not in use, use the dust caps that were supplied with the optical modules to protect the TX and RX surfaces of the optical module.

Clean the optic surfaces of the fiber cables before you plug them back into the optical ports of another module.

The switch ships with dust caps plugged in. We highly recommend you keep the dust caps plugged in until you are ready to plug an optic. The dust caps protect the ports from possible EMI interference and also avoid contamination due to dust collection.


Caution

To meet the EMI interference requirements, use the metal dust caps when the ports are not in use by optical modules.

Before you begin

Required Tools and Equipment

  • Wrist strap or other personal grounding device to prevent ESD occurrences

  • Antistatic mat or antistatic foam to set the transceiver on

  • Fiber-optic end-face cleaning tools and inspection equipment

Procedure

Step 1

Attach an ESD wrist strap to yourself and a properly grounded point on the chassis or the rack.

Step 2

Remove the transceiver module from its protective packaging.

Step 3

Check the label on the transceiver module body to verify that you have the correct model for your network. Do not remove the dust plug until you’re ready to attach the network interface cable. The dust plug is not shown in the images.

Step 4

Hold the transceiver by the pull-tab so that the identifier label is on the top.

Step 5

Align the transceiver module in front of the module’s transceiver socket opening and carefully slide the transceiver into the socket until the transceiver contacts the socket electrical connector.

Figure 1. Installing the QSFP Transceiver Module

Step 6

Press firmly on the front of the transceiver module with your thumb to fully seat the transceiver in the module’s transceiver socket (see figure Seating the QSFP Transceiver Module).

Figure 2. Seating the QSFP Transceiver Module

IMPORTANT: If the latch isn’t fully engaged, you might accidentally disconnect the transceiver module.