Use a USB flash drive to upgrade the juniper ex series switches

You can use a USB flash drive to upgrade the juniper ex series switch to the vswitch version. Generally, FTP or TFTP is used. Cause 2: 1. Most vswitches only support FTP or TFTP for data transmission. 2. Most vswitches do not provide USB interfaces. The www.2cto.com Juniper Ex series switches provide a separate management network interface and an additional USB interface. This means that the data exchange between the external and the Juniper switch can be transmitted through the USB port. This article takes juniper ex2200 exchange as an experimental object to learn how to upgrade the vswitch system version through the USB port. First, copy the required files to the USB flash drive. For example, note: the upgraded version requires the jloader file and the jinstall file. It is best to match the two files to avoid upgrade failure. Step 2: insert the USB flash drive to the USB port behind the switch. Step 3: connect to the vswitch through the console line and enter the following command:> start shell user root: log on to shell % mount_msdosfs/dev/da1s1/mnt as the root user. Mount the USB flash drive to/mnt. % exit indicates that the shell interface is exited. Step 4 of the cli interface www.2cto.com is displayed, upgrade jloader1. This step will not be repeated. 2.> set date yyyymmddhhmm. ss to set the system time, slightly lower than the current time. 3.> request system software add/mnt/jloader-ex2200-. tgz no-copy no-validate unlink reboot4. After the carriage return, the system restarts automatically after the upgrade. 5. after the restart, you may find the following prompt: OS 10.3R1.9 built 12:10:46 UTCAt least one package installed on this device has limited support. le show/etc/notices/unsupported.txt 'for details. if the above prompt appears, enter the following command: www.2cto.com 6.> request system software delete jloader step 5, start upgrading the JUNOS-jinstall1.> request system software add/mnt/jinstall-ex2200 -. tgz no-copy no-validate unlink reboot2.> after you press enter, the system restarts automatically and the system is upgraded during the restart process. This process takes about 20 minutes. Step 6: Check the system version.> The show version check is correct, that is, the upgrade is complete. If the upgrade fails or is caused by any other reasons, restart and perform the upgrade procedure again.