Upgrading The First Scb - Juniper MX960 Hardware Manual

Copyright © 2017, Juniper Networks, Inc.
chassis redundancy graceful-switchover, set system commit synchronize, set
routing-options nonstop-routing commands.
NOTE: These commands are mandatory for this upgrade and may be
removed, if desired, after the upgrade.
Set the upgrade flag on and start the SCB upgrade by issuing the
5.
command.
cb-upgrade on
user@host# configure
user@host# set chassis state cb-upgrade on
user@host# commit
Determine the order to replace the existing SCBs with upgraded ones. SCB 0, 1, and
6.
2 are available for the MX960. SCB 0 is associated with RE0, SCB1 is associated with
RE1, and ; SCB 2 is the spare SCB. The SCB order for MX960 is SCB2, SCB1 (backup
Routing Engine slot), and SCB0 (Master Routing Engine slot).
NOTE: Do not add or remove any router hardware during the upgrade
procedure.

Upgrading the First SCB

To upgrade the first SCB—that is—SCB2:
Take the fabric plane offline by issuing the
1.
command.
Verify that the fabric plane is offline by issuing the
2.
command.
user@host> show chassis fabric summary
Plane State Uptime
4 Offline
5 Online 1 hour, 15 minutes, 35 seconds
Verify that the State of Plane 4 is Offline.
Take the next fabric plane offline by issuing the
3.
command, and then verify that the fabric plane is offline by issuing the command
given in Step 2.
Take the SCB in slot 2 offline by issuing the
4.
Chapter 27: Replacing Switch Fabric Components
set chassis state
request chassis fabric plane 4 offline
show chassis fabric summary
request chassis fabric plane 5 offline
request chassis cb offline slot 2 command.
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