Upgrading The Scb In The Master Routing Engine - Juniper MX240 Hardware Manual

Upgrading the SCB in the Master Routing Engine

Copyright © 2017, Juniper Networks, Inc.
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.
routing-engine 0 command.
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.
Take the first fabric plane of the backup Routing Engine offline by issuing the
7.
chassis fabric plane 0 offline
2, and 3.
Verify that the fabric plane is offline by issuing the
8.
command.
user@host> show chassis fabric summary
Plane State Uptime
0 Offline
1 Online 3 minutes, 45 seconds
Verify that the State of plane 0 is Offline.
Take the remaining fabric planes offline by issuing the
9.
command—that is, by changing the fabric plane number each time. Verify
1/2/3 offline
that the fabric planes are offline by issuing the command given in Step 4.
Chapter 27: Replacing Switch Fabric Components
command.
configure exclusive
command.
command. SCB0 has four fabric planes numbered, 0, 1,
show chassis fabric summary
request chassis fabric plane
command, from the old
configure exclusive
show chassis
request
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