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 Networks Web 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）