Upgrade The Mx240 Scb-Mx In The Backup Routing Engine - Juniper MX240 Hardware Manual

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:
user@host# set chassis state cb-upgrade on
user@host# configure
user@host# commit
6. Determine the order to replace the existing SCB-MXs with upgraded ones. SCB 0 is associated with
RE0 and SCB1 is associated with RE1.
NOTE: Do not add or remove any router hardware during the upgrade procedure.

Upgrade the MX240 SCB-MX in the Backup Routing Engine

TIP: The MX240 has two slots for an SCB-MX: SCB 0 and SCB 1. These correspond to RE0 and
RE1, respectively, where SCB 1 is the first SCB-MX.
To upgrade the SCB-MX in the backup Routing Engine (SCB 1):
1. Power down the backup Routing Engine from the master Routing Engine by issuing the request system
power-off other-routing-engine command.
2. Verify that the Routing Engine is powered down by issuing the show chassis routing-engine 1 command.
The slot of the Routing Engine may be 0 or 1, and is shown as 1 in this example:
user@host> show chassis routing-engine 1
406