Checklist for Reinstalling Junos OS

Table 16 provides links and commands for reinstalling Junos OS.

Table 16: Checklist for Reinstalling Junos OS

Tasks	Command or Action
Before You Reinstall Junos OS
Log the Software Version Information	show version \| save filename
Log the Hardware Version Information	show chassis hardware \| save filename
Log the Chassis Environment Information	show chassis environment \| save filename
Log the System Boot-Message Information	show system boot-messages \| save filename
Log the Active Configuration	show configuration \| save filename
Log the Interfaces on the Router	show interface terse \| save filename
Log the BGP, IS-IS, and OSPF Adjacency Information	show bgp summary \| save filename show isis adjacency brief \| save filename show ospf neighbor brief \| save filename
Log the System Storage Information	show system storage \| save filename
Back Up the Currently Running and Active File System	request system snapshot
	https://www.juniper.net/support
Reinstall the Junos OS	Insert the floppy and reboot the system.
Reconfigure the Junos OS
Configure Names and Addresses	Log in as root. Start the CLI. Enter configuration mode: configure set system host-name host-name set system domain-name domain-name set interfaces fxp0 unit 0 family inet address address/prefix-length set system backup-router address set system name-server address
Example: Configuring the Root Password	set system root-authentication plain-text-password set system root-authentication encrypted-password password set system root-authentication ssh-rsa key commit exit
Check Network Connectivity	ping address
Copy Backup Configurations to the Router	file copy var/tmp configure [edit] load merge /config/filename or load replace /config/filename [edit] commit
After You Reinstall Junos OS
Compare Information Logged Before and After the Reinstall	show version \| save filename show chassis hardware \| save filename show chassis environment \| save filename show system boot-messages \| save filename show configuration \| save filename show interfaces terse \| save filename show bgp summary show isis adjacency brief show ospf neighbor brief \| save filename show system storage \| save filename
Back Up the New Software	request system snapshot