Juniper MX960 Hardware Manual page 578

1. Verify that the system runs Junos OS Release 11.4 or later by issuing the show version command on
the master router. Here's an example for the MX960:
user@host> show version
Model: mx960
Junos Base OS Software Suite [11.4-20110530];
NOTE: The SCBE-MX is supported only in Junos OS Release 11.4 or later.
The latest software ensures a healthy system—that is, Routing Engines, control boards, and FPCs—before
the upgrade.
2. Verify that SCB-MX boards are installed:
user@host> show chassis hardware
Item Version
CB0 REV 07 710-021523 ABBC8281
CB1 REV 07 710-021523 ABBC8323
CB2 REV 07 710-021523 ABBD1410
SCB-MX details are displayed as above, along with other hardware components.
3. Establish console connections to both Routing Engines. You can use a telnet session to connect to the
router console by issuing the <router name>-con command. For example, if the router name is juniper,
you can connect to RE0 and RE1 consoles by issuing the telnet juniper-con and telnet juniper1-con
commands.
4. Ensure that graceful switchover (GRES), commit synchronize (required for nonstop 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.
5. Set the upgrade flag on and start the SCB-MX upgrade by issuing the set chassis state cb-upgrade on
command.
Part Number Serial Number Description
MX SCB
MX SCB
MX SCB
567