15. 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
0 Online 2 minutes, 5 seconds
1 Online 1 minute, 55 seconds
2 Online 1 minute, 43 seconds
3 Online 1 minute, 33 seconds
16. Verify that the backup Routing Engine is back online by issuing the show chassis
routing-engine 0 command:
user@host> show chassis routing-engine 0
Routing Engine Status:
Slot 0:
Current State Backup
17. Verify the alarms by issuing the show chassis alarms command:
user@host> show chassis alarms
Alarm Time Class Description
2011-06-01 13:26:56 EDT Major CB fabric links require upgrade/training
2011-06-01 12:10:41 EDT Major Require a fan tray upgrade
The major alarm has changed from CB fabrics are of mixed types to CB fabric links
require upgrade/training, as a switch control board requires training to change links
from 3G speed to 6G speed of the SCBE. This alarm is displayed until the 3G to 6G
link transition is completed.
Completing the SCB Upgrade
To complete the procedure after upgrading the SCBs:
1. Verify that any Modular Port Concentrator (MPC) is running at 3G instead of 6G by
issuing the request chassis fabric upgrade-bandwidth info command:
user@host> request chassis fabric upgrade-bandwidth info
Slot State
0 Upgrade not supported
1 Needs upgrade
2 Empty
3 Empty
4 Empty
5 Empty
The results indicate that slot 0 does not support the upgrade and slot 1 needs to be
upgraded.
2. Upgrade the bandwidth of all MPCs by issuing the request chassis fabric
upgrade-bandwidth fpc all command. If you want to control the MPC line card upgrade,
go to Step 3.
407Copyright © 2017, Juniper Networks, Inc.
Chapter 27: Replacing Switch Fabric Components
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