[网络转载] 升级Juniper路由器的Junos

呵呵，前天在pc上模拟Olive 成功了，这两天准备跟同事一起把单位那台备份M5的junos升级到V8.1，看看官方文档吧
To see the software that is currently installed on the router, use the following command:
root@router> show system software （升级前先确定旧的Junos相关版本）

Information for jbase:
Comment:
JUNOS Base OS Software Suite [5.0R3.3]
Information for jcrypto:
Comment:
JUNOS Crypto Software Suite [5.0R3.3]
Information for jdocs:
Comment:
JUNOS Online Documentation [5.0R3.3]
Information for jkernel:
Comment:
JUNOS Kernel Software Suite [5.0R3.3]
Information for jpfe:
Comment:
JUNOS Packet Forwarding Engine Support [5.0R3.3]
Information for jroute:
Comment:
JUNOS Routing Software Suite [5.0R3.3]
Information for junos:
Comment:
JUNOS Base OS boot [5.0R3.3]
To upgrade your software, there are several simple steps (following this list, we will explain each item in more detail):
Download the software package(s) you need from the Juniper NetworksWeb site.（下载新的Junos版本，这个...弄到手为强，据说juniper网站那个帐号比cisco的CCO还猛，一般人搞不定）


Perform a system backup on the router you wish to upgrade.
(升级前，备份配置文件，旧的junos) Copy the software package(s) to the router you wish to upgrade.
（利用ftp把新的junos拷贝到/var/tmp目录） Add the new software package(s) to the router you wish to upgrade (this will effectively delete the old packages).（升级，加载新的junos）
Reboot the router.（重启路由器就ok咯）
1 Downloading the SoftwareWhen you download JUNOS software from the Juniper Networks Web site at www.juniper.net/support using your authorized username and password, you will notice that the packages use a standard naming convention. The format is package-x.yZnumber.tgz:

Package is the name of the file (such as jbundle).

x.y is the software version.

Z is the type ofrelease. For most customers, this will be an R for released version.For some customers, it may be A (alpha release), B (beta release), or I(internal release).

number is the software release number and build, if applicable.

2 Backing Up the SystemYou can create a recoverable snapshot of the current system, if itis stable, before proceeding. Using this command, however, will makethe running and backup versions of the software identical and will meanthat you cannot revert back to the original version that shipped withthe router. To make the snapshot, use the following command:
root@router# request system snapshot
This will back up the /root file system to /altroot and the /config file system to /altconfig on the hard disk.
3 Copying the Package(s) to the RouterAfter you have backed up your system files, copy the new softwarebundle to the router's hard disk, using a command such as the following:
root@router# file copy
ftp://username:prompt@ftp.hostname.net/  filename
/var/tmp/filenameThis will copy the file from an FTP server to the /var/tmpdirectory on the router's hard disk. This is simply an example of oneway to copy the file. The M40 also has an LS-120 floppy drive that canbe used for the storage and transfer of files. When installing a newsoftware version, you should do so from an out-of-band managementsource, such as the console. An in-band source, such as Telnet, couldbe lost while you are upgrading.
4 Adding the Package(s)Once the files have been copied to the hard disk, upgrade the software using the following command:
root@router> request system software add package-name

Checking available free disk space...11600k available, 6076k suggested...
Installing package '/var/tmp/jbundle-package-name' ...
Auto-deleting old jroute...
Auto-deleting old jdocs...
Auto-deleting old jpfe...
Auto-deleting old jkernel...
Adding JUNOS base software release-number...
Adding jkernel...
Adding jpfe...
Adding jdocs...
Adding jroute...
NOTICE: uncommitted changes have been saved in
/var/db/config/juniper.conf.pre-install
Saving package file in /var/sw/pkg/jbundle-package-name ...
As you can see in the example, once you begin to install the new jbundle, the system deletes the old information and explodes (expands) the zipped files contained in the new bundle into the /var/sw/pkg/jbundle-package-name file.
5 Finishing the UpgradeOnce the software upgrade has completed, you should perform a systemreboot. This is the last step in upgrading the JUNOS softwarepackage(s). Use the following command:
root@router> request system reboot