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.
7. Remove and replace the SCB-MX in slot 2 on the router (SCB 2) with the SCBE. Use the procedure
described in “Replacing an MX960 SCB” on page 561.
8. Verify that the installation is successful and the SCBE is online:
user@host> show chassis environment cb 2
CB 2 status
State Online
Temperature 30 degrees C / 86 degrees F
9. Verify that the fabric planes come online correctly by issuing the show chassis fabric summary command:
user@host> show chassis fabric summary
Plane State Uptime
4 Online 2 minutes, 25 seconds
5 Online 2 minutes, 15 seconds
10. Verify the alarms:
user@host> show chassis alarms
Alarm Time Class Description
2011-06-01 13:26:56 EDT Major CB fabrics are of mixed types
2011-06-01 12:10:41 EDT Major Require a fan tray upgrade
Because only one SCB-MX has been upgraded, the alarm indicates that the SCBs are of mixed type.
This alarm is cleared after all the control boards are upgraded.
Upgrade the SCB-MX in the Backup Routing Engine Slot 1 (SCB 1)
1. Power down the backup Routing Engine from the master Routing Engine by issuing the request system
power-off other-routing-engine command.
2. Ensure that the Routing Engine is powered down by issuing the show chassis routing-engine 1 command.
The slot of the Routing Engine may be 0 or 1, and is shown as 1 in this example:
user@host> show chassis routing-engine 1
569
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