Juniper MX480, Hardware Manual

Page: 339 / 420

user@host>
show chassis alarms
Alarm Time Class Description
2011-06-01 13:26:56 EDT Major CB fabrics are of mixed types
As only one SCB-MX has been upgraded, the alarm indicates that the SCB-MXs are
of mixed type. This alarm is cleared after all the control boards are upgraded.
Upgrade the MX480 SCB-MX in the Master Routing Engine
1.
Issue the request chassis routing-engine master switch command so that the backup
RE becomes the master RE. This ensures a Graceful RE Switchover (GRES) to
gracefully switch between the master and backup Routing Engines.
2.
Log in to the new master Routing Engine after the switchover.
3.
Switch the configuration mode to ensure that you are still in configure exclusive mode
by issuing the
exit command and then the configure exclusive command, from the old
master Routing Engine.
4.
Log in to the current master Routing Engine again and issue the
configure exclusive
command.
5.
Power down the backup Routing Engine from the master Routing Engine by issuing
the
request system power-off other-routing-engine
command.
6.
Issue the show chassis routing-engine 0 command to verify that the Routing Engine
is powered down.
user@host> show chassis routing-engine 0
Routing Engine Status:
Slot 0:
Current State Present
Verify that the Current State is Present, which indicates that the Routing Engine is
offline.
7.
Take the first fabric plane of the backup Routing Engine offline by issuing the request
chassis fabric plane 0 offline command. SCB0 has four fabric planes numbered, 0, 1,
2, and 3.
8.
Issue the show chassis fabric summary command to verify that the fabric plane is
offline.
user@host> show chassis fabric summary
Plane State Uptime
0 Offline
1 Online 3 minutes, 45 seconds
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Chapter 4: Maintaining Components