Juniper MX480, Hardware Manual

Page: 341 / 420

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 SCB-MX requires training to change the link speed from
3G to 6G for the SCBE-MX. This alarm is displayed until the 3G to 6G link transition is
completed.
Complete the SCBE-MX Upgrade
1.
Verify if there are any MPCs running at 3G instead of 6G:
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
In this example, the results indicate that slot 0 does not support the upgrade and slot
1 needs to be upgraded.
NOTE: The SCBE-MX line card supports only DPC, MS-DPC, MPC1, MPC2,
and MPC3 line cards for the
upgrade-bandwidth
command. If line cards
that do not support the
upgrade-bandwidth
command are present in the
chassis during the SCB-MX to SCBE-MX upgrade, the
request chassis fabric
upgrade-bandwidth
commands will return
Upgrade not supported
for the
slot(s) that contain the unsupported line card(s).
2.
Issue the request chassis fabric upgrade-bandwidth fpc all command to upgrade the
bandwidth of all MPCs. If you want to control the MPC line card upgrade, go to Step
3.
CAUTION: Use this command only if you are not concerned with the slot
upgrade order or if only one old MPC is present in the chassis. Running this
command may result in a loss of traffic across the MPC. Using this method
may increase the traffic loss, because it does not consider any redundancy
341 Copyright © 2019, Juniper Networks, Inc.
Chapter 4: Maintaining Components