Juniper JUNOS OS 10.3 - SOFTWARE, Manual

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Booting an EX Series Switch Using a Software Package Stored on a USB Flash Drive
There are two methods of getting Junos OS onto a USB flash drive before using the
software to boot the switch. You can pre-install the software onto the USB flash drive
before inserting the USB flash drive into the USB port, or you can use the system snapshot
feature to copy files from internal switch memory to the USB flash drive.
To move files into USB flash memory using a system snapshot and use those files to
boot the switch, see “Creating a Snapshot and Using It to Boot an EX Series Switch” on
page 89. We recommend that you use this method to boot the switch from a USB flash
drive if your switch is running properly.
If you need to pre-install the software onto the USB flash drive, you can use the method
described in this topic. Pre-installing the Junos OS onto a USB flash drive to boot the
switch can be done at any time and is particularly useful when the switch boots to the
loader prompt because the switch cannot locate the Junos OS in internal flash memory.
Ensure that you have the following tools and parts available to boot the switch from a
USB flash drive:
• A USB flash drive that meets the EX Series switch USB port specifications. See USB
Port Specifications for an EX Series Switch.
•
A computer or other device that you can use to download the software package from
the Internet and copy it to the USB flash drive.
To download a Junos OS package onto a USB flash drive before inserting the USB flash
drive:
1.
Download the Junos OS package that you would like to place onto the EX Series
switch from the Internet onto the USB flash drive using your computer or other device.
See “Downloading Software Packages from Juniper Networks” on page 77.
2.
Remove the USB flash drive from the computer or other device.
3.
Insert the USB flash drive into the USB port on the switch.
4.
This step can only be performed when the prompt for the loader script (
loader>
) is
displayed. The loader script starts when the Junos OS loads but the CLI is not working
for any reason or if the switch has no software installed.
Install the software package onto the switch:
loader> install source
where
source
represents the name and location of the Junos OS package on the USB
flash drive. The Junos OS package on a flash drive is commonly stored in the root drive
as the only file—for example,
file:///jinstall-ex-4200-9.4R1.5-domestic-signed.tgz
.
Related
Documentation
Installing Software on an EX Series Switch with a Single Routing Engine (CLI Procedure)
on page 78
•
•
Installing Software on EX Series Switches (J-Web Procedure) on page 83
Copyright © 2010, Juniper Networks, Inc. 88
Complete Software Guide for Junos
®
OS for EX Series Ethernet Switches, Release 10.3