Replacing an MX80 MIC
Removing an MX80 MIC
MICs are hot-insertable and hot-removable. When you remove a MIC, the router continues to function, although the MIC interfaces being removed no longer function.
In the modular configuration of the MX80 router, the MICs can be installed in two slots in the front of the router. A MIC weighs less than 2 lb (0.9 kg).
To remove a MIC (see Figure 1 and Figure 2):
- Place an electrostatic bag or antistatic mat on a flat, stable surface to receive the MIC. If the MIC connects to fiber-optic cable, have ready a rubber safety cap for each transceiver and cable.
- Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
- Use one of the following methods to take the MIC offline:
- Press its online/offline button. Use a narrow-ended tool that fits inside the opening that leads to the button. Press and hold the button until the MIC OK/FAIL LED goes off (about 5 seconds).
- Issue the following CLI command:
user@host> request chassis mic fpc-slot slot-number mic-slot slot-number offline
- Label the cables connected to the MIC so that you can later reconnect each cable to the correct MIC.
- Disconnect the cables from the MIC. If the MIC
uses fiber-optic cable, immediately cover each transceiver and the
end of each cable with a rubber safety cap.
Warning: Do not look directly into a fiber-optic transceiver or into the ends of fiber-optic cables. Fiber-optic transceivers and fiber-optic cable connected to a transceiver emit laser light that can damage your eyes.
Caution: Do not leave a fiber-optic transceiver uncovered except when inserting or removing cable. The safety cap keeps the port clean and prevents accidental exposure to laser light.
- Arrange the cable to prevent it from dislodging
or developing stress points. Secure the cable so that it is not supporting
its own weight as it hangs to the floor. Place excess cable out of
the way in a neatly coiled loop.
Caution: Avoid bending fiber-optic cable beyond its minimum bend radius. An arc smaller than a few inches in diameter can damage the cable and cause problems that are difficult to diagnose.
- Pull the ejector lever above the MIC you are removing
away from the router. Pulling the ejector lever disconnects the MIC
from the chassis.
Note: To remove a dual-wide MIC that takes up both MIC slots, you must pull both ejector levers.
- Grasp the handles on the MIC faceplate, and slide the MIC out of the chassis. Place it in the electrostatic bag or on the antistatic mat.
- If you are not reinstalling a MIC into the emptied MIC slot within a short time, install a blank MIC panel over the slot to maintain proper airflow in the chassis card cage.
Figure 1: Removing a MIC
Figure 2: Removing a Dual-Wide MIC
Installing an MX80 MIC
To install a MIC (see Figure 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.
- If the MIC uses fiber-optic cable, verify that a rubber safety cap is over each transceiver on the faceplate. Install a cap if necessary.
- If you have used a dual-wide MIC and are now replacing
it with two “single” MICs, install the septum (see Figure 3):
- Align the bottom of the septum with the groves in the center of the two MIC slots.
- Slide the septum towards the rear of the chassis until it is seated firmly in place.
Figure 3: Installing the Septum
- Pull the ejector lever above the MIC slot away from the router.
- Align the rear of the MIC with the guides located at the corners of the MIC slot.
- Slide the MIC into the MIC slot until it is firmly
seated in the chassis.
Caution: Slide the MIC straight into the slot to avoid damaging the components on the MIC.
- Verify that the ejector lever is engaged by pushing it toward the router.
- If the MIC uses fiber-optic cable, remove the rubber
safety cap from each transceiver and the end of each cable.
Warning: Do not look directly into a fiber-optic transceiver or into the ends of fiber-optic cables. Fiber-optic transceivers and fiber-optic cable connected to a transceiver emit laser light that can damage your eyes.
Caution: Do not leave a fiber-optic transceiver uncovered except when inserting or removing cable. The safety cap keeps the port clean and prevents accidental exposure to laser light.
- Insert the appropriate cables into the cable connectors on the MIC.
- Arrange each cable to prevent the cable from dislodging
or developing stress points. Secure the cable so that it is not supporting
its own weight as it hangs to the floor. Place excess cable out of
the way in a neatly coiled loop.
Caution: Do not let fiber-optic cable hang free from the connector. Do not allow fastened loops of cable to dangle, which stresses the cable at the fastening point.
Caution: Avoid bending fiber-optic cable beyond its minimum bend radius. An arc smaller than a few inches in diameter can damage the cable and cause problems that are difficult to diagnose.
- Use one of the following methods to bring the MIC
online:
- Press the MIC offline/online button until the MIC OK/FAIL LED lights green.
- Issue the following CLI command:
user@host> request chassis mic fpc-slot slot-number mic-slot slot-number online
The normal functioning status LED confirms that the MIC is online. You can also verify correct MIC functioning by issuing the show chassis fpc pic-status command described in Maintaining the MX80 MICs.
Figure 4: Installing a MIC
Installing an MX80 Dual-Wide MIC
To install a dual-wide MIC (see Figure 6):
- Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
- If the MIC uses fiber-optic cable, verify that a rubber safety cap is over each transceiver on the faceplate. Install a cap if necessary.
- Remove the septum, if necessary (see Figure 5):
- Lift the latch in the center of the two MIC slots to disengage the septum from the chassis.
- Slide the septum towards you, and then lift the septum out of the slot.
- Store the septum for later use.
Figure 5: Removing the Septum
- Pull the ejector lever above both MIC slots away from the router.
- Align the rear of the MIC with the guides located at the corners of the MIC slot.
- Slide the MIC into the MIC slot until it is firmly
seated in the chassis.
Caution: Slide the MIC straight into the slot to avoid damaging the components on the MIC.
- Verify that the ejector levers are engaged by pushing them toward the router.
- If the MIC uses fiber-optic cable, remove the rubber
safety cap from each transceiver and the end of each cable.
Warning: Do not look directly into a fiber-optic transceiver or into the ends of fiber-optic cables. Fiber-optic transceivers and fiber-optic cable connected to a transceiver emit laser light that can damage your eyes.
Caution: Do not leave a fiber-optic transceiver uncovered except when inserting or removing cable. The safety cap keeps the port clean and prevents accidental exposure to laser light.
- Insert the appropriate cables into the cable connectors on the MIC.
- Arrange each cable to prevent the cable from dislodging
or developing stress points. Secure the cable so that it is not supporting
its own weight as it hangs to the floor. Place excess cable out of
the way in a neatly coiled loop.
Caution: Do not let fiber-optic cable hang free from the connector. Do not allow fastened loops of cable to dangle, which stresses the cable at the fastening point.
Caution: Avoid bending fiber-optic cable beyond its minimum bend radius. An arc smaller than a few inches in diameter can damage the cable and cause problems that are difficult to diagnose.
- Use one of the following methods to bring the MIC
online:
- Press the MIC offline/online button until the MIC OK/FAIL LED lights green.
- Issue the following CLI command:
user@host> request chassis mic fpc-slot slot-number mic-slot slot-number online
The normal functioning status LED confirms that the MIC is online. You can also verify correct MIC functioning by issuing the show chassis fpc pic-status command described in Maintaining the MX80 MICs.
Figure 6: Installing a Dual-Wide MIC
