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Checklist for Reinstalling Junos OS

Table 1 provides links and commands for reinstalling Junos OS.

Table 1: Checklist for Reinstalling Junos OS

Tasks

Command or Action

Before You Reinstall Junos OS
  1. Log the Software Version Information

show version | save filename

  1. Log the Hardware Version Information

show chassis hardware | save filename

  1. Log the Chassis Environment Information

show chassis environment | save filename

  1. Log the System Boot-Message Information

show system boot-messages | save filename

  1. Log the Active Configuration

show configuration | save filename

  1. Log the Interfaces on the Router

show interface terse | save filename

  1. 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

  1. Log the System Storage Information

show system storage | save filename

  1. 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
  1. 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

  1. 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

  1. Check Network Connectivity

ping address

  1. 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
  1. 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

  1. Back Up the New Software

request system snapshot

Published: 2013-02-25

Supported Platforms

Published: 2013-02-25

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