Upgrading An Mx240, Mx480, Or Mx960 Router To Use The Scbe3-Mx; Upgrade The Routing Engine - Juniper MX240 Hardware Manual

Upgrading an MX240, MX480, or MX960 Router to Use the SCBE3-MX

Copyright © 2019, Juniper Networks, Inc.
NOTE: Due to certain limitations in functionality, the MPC7E is not supported
in slot 1 when the SCBE3-MX is plugged into an MX960 PREMIUM3/BASE3
system. If you have an MPC7E in slot 1, move it to a different slot before
installing the SCBE3-MX.
Upgrade the Routing Engine on page 343
1.
2. Install the Routing Engine into the SCBE3-MX on page 344
Install the SCBE3-MX into the Router Chassis on page 344
3.
Complete the SCBE3-MX Upgrade on page 344
4.

Upgrade the Routing Engine

If you are upgrading to the SCBE3-MX from an SCBE2-MX or older SCB, the Routing
Engine must be upgraded to the first supported Junos release for the SCBE3-MX (18.4R1)
before you install it in the SCBE3-MX. Also, we recommend that you update the recovery
snapshot with the 18.4R1 or later image before you begin the upgrade. If the Routing
Engine fails to boot from the primary image, it will attempt to boot from the recovery
image. Since the older recovery image does not support the SCBE3-MX, the Routing
Engine will crash if it attempts to boot from the old recovery image.
CAUTION: If you plug the Routing Engine into the SCBE3-MX without first
upgrading Junos to 18.4R1 or later, Junos might crash and go to a
Should this occur, you'll need to recover the router by copying the Junos
software image for the 18.4R1 or later release and then booting from the USB
drive to install 18.4R1 Junos on the SCBE3-MX. The USB install will wipe out
the router configuration and all user files on the Routing Engine.
To upgrade the Routing Engine while it's plugged into an SCBE2-MX or older SCB:
Download the software related to your MX Series Routing Engine.
1.
If you have not already done so, connect to the console port on the switch from your
2.
management device, and log in to the Junos OS CLI.
(Optional) Back up the current software configuration to a second storage option.
3.
See the
Junos OS Installation and Upgrade Guide
Install the new software.
4.
Reboot the Routing Engine and wait for it to boot with the new Routing Engine image.
5.
Install the SCBE3-MX into the Router Chassis. See:
6.
Chapter 4: Maintaining, Installing and Replacing Components
for instructions on performing this task.
db prompt.
343