EX 4200 :- Upgrading Junos

1. Upgrading Junos

1.   Procedure to upgrade the switch through USB:

ü  Login with root credentials

• Mount USB

% mount_msdosfs /dev/da1s1 /mnt

/dev/da1s1 :- This path will change according to the USB (Eg:- da1s0/da1s2 ETC.....

• Go to mount directory

% cd /mnt

• Copy jloader & jinstall software package to temp directory

% cp jloader....<press tab> /var/tmp  For XML scrips need to install

% cp jinstall...<press tab> /var/tmp   This for install the IOS

• To verify file, go to /var/tmp directory:

% cd /var/tmp

• To verify the package files

% ls

• Type cli and enter into operational mode

% cli

• Add the software package

> request system software add /var/tmp/jloader...<press tab>  no-opy

> request system software add /var/tmp/jinstall..<press tab>  no-copy

• Reboot the device

> request system reboot

Type yes

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• After the upgrade check the current version

> show version

> show system snapshot media internal --> to verify OS on each partition (primary + backup)

• If there is mismatch run below command

> request system snapshot slice alternate

• Check the routing-engine utilization

> show chassis routing-engine