Upgrading The Scb In The Master Routing Engine - Juniper mx240 Hardware Manual

Copyright © 2016, Juniper Networks, Inc.
Verify that the installation is successful and the SCB is online by issuing the
10.
chassis environment cb 1
user@host> show chassis environment cb 1
CB 1 status
State Online
Temperature 30 degrees C / 86 degrees F
Other details, such as power, are also displayed, along with the state.
Verify that the fabric planes come online correctly by issuing the
11.
command:
summary
user@host> show chassis fabric summary
Plane State Uptime
4 Online 2 minutes, 25 seconds
5 Online 2 minutes, 15 seconds
6 Online 2 minutes, 3 seconds
7 Online 1 minute, 49 seconds
Verify that the backup Routing Engine is back online by issuing the
12.
command:
routing-engine 0
user@host> show chassis routing-engine 0
Routing Engine Status:
Slot 0:
Current State Backup
Verify the alarms by issuing the
13.
user@host> show chassis alarms
Alarm Time Class Description
2011-06-01 13:26:56 EDT Major CB fabrics are of mixed types
Because only one SCB has been upgraded, the alarm indicates that the SCBs are of
mixed type. This alarm is cleared after all the control boards are upgraded.

Upgrading the SCB in the Master Routing Engine

To upgrade the SCB in the master Routing Engine:
Ensure a Graceful RE Switchover (GRES) to gracefully switch between the master
1.
and backup Routing Engines, so that the backup RE becomes the master RE, by issuing
the
request chassis routing-engine master switch
Log in to the new master Routing Engine after the switchover.
2.
Switch the configuration mode to ensure that you are still in configure exclusive mode
3.
by issuing the command and then the
exit
master Routing Engine.
Log in to the current master Routing Engine again and issue the
4.
command.
Power down the backup Routing Engine from the master Routing Engine by issuing
5.
the
request system power-off other-routing-engine
Ensure that the Routing Engine is powered down by issuing the
6.
command.
routing-engine 0
Chapter 27: Replacing Switch Fabric Components
command:
show chassis alarms
command.
configure exclusive
show
show chassis fabric
show chassis
command:
command, from the old
configure exclusive
command.
show chassis
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