Replacing, Upgrading, and Downgrading the M7i CFEB and CFEB-E
The CFEB and CFEB-E are hot-pluggable when you replace a CFEB with a CFEB or a CFEB-E with a CFEB-E, as described in M7I Field-Replaceable Units (FRUs). Upgrading or downgrading a CFEB device requires a system reboot, as described in Upgrading and Downgrading the CFEB and CFEB-E. To replace the CFEB or CFEB-E, perform the following procedures:
Removing the M7i CFEB and CFEB-E
To remove the CFEB or CFEB-E (see Figure 1):
- Place an electrostatic bag or antistatic mat on a flat, stable surface.
- Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
- Press and hold the ONLINE/OFFLINE button on the faceplate of the CFEB or CFEB-E until the green OK LED turns off, which takes about 5 seconds.
- Loosen the thumbscrew on each ejector locking tab (shown in M7i Compact Forwarding Engine Board (CFEB) and Enhanced Compact Forwarding Engine Board (CFEB-E) Description), using a Phillips screwdriver if necessary.
- Pull the ends of the ejector handles outward until they are nearly perpendicular to the faceplate of the CFEB or CFEB-E.
- Grasp the ejector handles and pull firmly to slide the CFEB or CFEB-E about halfway out of the chassis.
- Place one hand under the CFEB or CFEB-E to support
it, slide it completely out of the chassis, and place it on the antistatic
mat or in the electrostatic bag.
Caution: When a CFEB or CFEB-E is out of the chassis, do not hold it by the ejector handles. They cannot support its weight.
Do not stack CFEBs or CFEB-Es on top of or under other components. Place each one individually in an electrostatic bag or on its own antistatic mat on a flat, stable surface.
Figure 1: Removing the CFEB or CFEB-E
Installing the M7i CFEB and CFEB-E
To install the CFEB or CFEB-E (see Figure 2):
- Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
- Verify that the ends of the ejector handles are pulled outward to a position nearly perpendicular to the faceplate of the CFEB or CFEB-E.
- Place one hand under the CFEB or CFEB-E to support it and grasp one of the ejector handles at the front with the other hand.
- Align the rear of the CFEB or CFEB-E with the guides inside the chassis and slide it in completely.
- Press the ejector handle at each end of the CFEB or CFEB-E inward.
- Tighten the thumbscrew on each ejector locking tab (shown in M7i Compact Forwarding Engine Board (CFEB) and Enhanced Compact Forwarding Engine Board (CFEB-E) Description) to seat the CFEB or CFEB-E firmly in the chassis.
- Press and hold the ONLINE/OFFLINE button
on the CFEB or CFEB-E faceplate until the green OK LED lights
steadily.
You can verify correct CFEB or CFEB-E functioning by issuing the show chassis cfeb command described in Maintaining the M7i CFEB and CFEB-E.
Figure 2: Installing a CFEB or CFEB-E
Upgrading and Downgrading the CFEB and CFEB-E
To upgrade by replacing a CFEB with a CFEB-E or to downgrade by replacing a CFEB-E with a CFEB requires a system reboot after swapping the CFEB devices.
To upgrade from a CFEB to a CFEB-E or downgrade from a CFEB-E to a CFEB:
- Remove the CFEB or CFEB-E as described in Removing the M7i CFEB and CFEB-E.
- Install the upgrade CFEB-E or downgrade CFEB as described in Installing the M7i CFEB and CFEB-E.
- Reboot the router by issuing the following CLI
command:
user@host> request system reboot
After the reboot, the router recognizes the new CFEB or CFEB-E.
