Juniper MX240 Hardware Manual page 192

MX240 3D Universal Edge Router Hardware Guide
168
Verify that the system runs Junos OS Release 11.4 or later by issuing the show version
1.
command on the master router.
user@host> show version
Model: mx240
Junos Base OS Software Suite [11.4-20110530];
NOTE: The Enhanced MX SCB is supported only in Junos Release 11.4 or
later.
The latest software ensures a healthy system—that is—Routing Engines, control
boards, and FPCs, before the upgrade.
Verify that MX SCB boards are installed by issuing the show chassis hardware
2.
command.
user@host> show chassis hardware
Item Version Part Number Serial Number Description
CB0 REV 07 710-021523 ABBC8281
CB1 REV 07 710-021523 ABBC8323
SCB details are displayed as above, along with other hardware components. The
MX240 router has only two SCBs, and each SCB has four fabric planes.
Establish console connections to both Routing Engines. You can use a telnet session
3.
to connect to the router console by issuing the
example, if the router name is juniper, you can connect to RE0 and RE1 consoles by
issuing the
telnet juniper-con
Ensure that graceful switchover (GRES), commit synchronize (required for nonstop
4.
routing), and nonstop routing (NSR) are enabled or configured by running the set
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# set chassis state cb-upgrade on
user@host# configure
user@host# commit
Determine the order to replace the existing SCBs with upgraded ones. SCB0 is
6.
associated with RE0 and SCB1 is associated with RE1.
NOTE: Do not add or remove any router hardware during the upgrade
procedure.
MX SCB
MX SCB
<router name>-con
and commands.
telnet juniper1-con
Copyright © 2013, Juniper Networks, Inc.
command. For
set chassis state