We recommend that you use nonstop software upgrade (NSSU)
to upgrade the software for an EX8200 Virtual Chassis. NSSU upgrades
all Routing Engines in the Virtual Chassis with minimal disruption
of traffic. For more details, see Upgrading
Software on an EX8200 Virtual Chassis Using Nonstop Software Upgrade
(CLI Procedure).
Use the procedure described in this topic to upgrade the software
for the EX8200 Virtual Chassis when you cannot use NSSU—for
example, when the software version you are running does not support
NSSU.
You can use this procedure to upgrade the software on all devices
in the EX8200 Virtual Chassis, including all EX8200 member switches
and both the primary and backup external Routing Engines. This procedure
requires a reboot of the Virtual Chassis.
To upgrade software for all devices in the EX8200 Virtual Chassis:
- Download the software package for the XRE200 External
Routing Engine (the software package whose package name contains “xre200”—for
instance, jinstall-ex-xre200-10.4R1.8-domestic-signed.tgz.
- (Optional) Back up the current software configuration
to a second storage option. See the Junos OS Installation and Upgrade Guide.
- (Optional) Copy the software package to the primary external
Routing Engine. We recommend that you use FTP to copy the file to
the /var/tmp directory.
This step is optional because you can upgrade Junos OS when
the software image is stored at a remote location. This procedure
describes the software upgrade process for both scenarios.
- Install the new package:
Note: A reboot, which occurs as part of the execution of the
following command, is required on each external Routing Engine or
switch to complete the software upgrade. If you use this procedure
as outlined, all Switch Fabric and Routing Engine (SRE) modules or
Routing Engine (RE) modules on the EX8200 switches that are connected
into the EX8200 Virtual Chassis will reboot simultaneously when the
command is entered. Network traffic cannot be forwarded during the
reboot.
If you want to reboot a device at a later time or reboot the
SRE modules or RE modules individually, do not use the reboot
option at this point of the procedure. Enter the request system
reboot
command at a later time to reboot the external Routing
Engine or SRE module or RE module to complete the procedure.
user@switch> request system software add source reboot
Replace source
with one of the
following paths:
For a software package that is installed from a local
directory on the external Routing Engine—/pathname/package-name-m.nZx-distribution.tgz.
For a software package that is downloaded and installed
from a remote location:
where package-name-m.nZx-distribution.tgz
is, for example, jinstall-ex-xre200-10.4R1.8-domestic-signed.tgz.