Installing Software for All Devices in an EX8200 Virtual Chassis
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 master 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 master 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:
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.