最基本的物质需求得到满足之后，唯一能够不断增加个人幸福感的事情就是帮助他人

一、已有条件
SSG 5:
boot loader版本：Boot Loader Version 1.3.3
firmware screenOS版本：6.1.0
下载的新版本固件：ssg5ssg20.6.3.0r4.0
PC机：安装Solarwinds TFTP Server，其默认根目录默认为c:\TFTP-Root，已经将ssg5ssg20.6.3.0r4.0放置到该目录下。PC机ip地址是 192.168.170.210

二、步骤
1、将PC机串口连接SSG 5Console口，将PC机网口连接SSG5 ethernet0/3，PC机ip地址为192.168.170.210。启动TFTP Server。

2、开启终端工具（如windows hyperterminal），启动SSG 5。终端工具中显示

Juniper Networks SSG5 Boot Loader Version 1.3.3 (Checksum: D8BC25A8)
Copyright (c) 1997-2006 Juniper Networks, Inc.


Total physical memory: 256MB
    Test - Pass
    Initialization - Done


Hit any key to run loader
Hit any key to run loader


此时hit any key，

Serial Number [0162042009001887]: READ ONLY
HW Version Number [0710]: READ ONLY
Self MAC Address [0023-9c38-99c0]: READ ONLY
Boot File Name [ssg5ssg20.6.3.0r4.0]:ssg5ssg20.6.3.0r4.0
Self IP Address [192.168.170.91]:192.168.170.91
TFTP IP Address [192.168.170.210]:192.168.170.210

顺利的话

a!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!at
a!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!at
a!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!at
a!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!at
a!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!ata!at
a!ata!ata!ata!ata!ata!ata!ata

Loaded Successfully! (size = 13,280,811 bytes)

Image authenticated!

3、Save to on-board flash disk? (y/[n]/m) Yes!
此步选择yes，才能每次都能启动新固件，不同于升级boot loader，虽然升级入口都一样（Hit any key）
然后，
Saving system image to on-board flash disk...
Done! (size = 13,280,811 bytes)

4、Run downloaded system image? ([y]/n) Yes!


Start loading...
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Done.



Juniper Networks, Inc
SSG5/SSG20 System Software
Copyright, 1997-2008

Version 6.3.0r4.0
Cksum:d99f6452
Load Manufacture Information ... Done

Initialize FBTL 0........ Done
Load NVRAM Information ... (6.1.0)Done
Install module init vectors
The device is storing the firmware into reserved flash sectors.
Please do not power off the device during this operation. Doing so could result
in loss of firmware.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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+++++++++++
The device successfully completed the operation.
Changed to l3 mode
Install modules (01254800,01fb4000) ...
PPP IP-POOL initiated, 256 pools

Initializing DI 1.1.0-ns

System config (1331 bytes) loaded

Done.
Load System Configuration ...............................
Unsupported command - set zone "VLAN" block
..................................modem is not detected
....................................Disabled licensekey auto update
...........Done
system init done..
login: ethernet0/3 interface change physical state to Up
bgroup0 interface change physical state to Up
System change state to Active(1)

升级成功，此时进入ScreenOS 6.3.0r4

标签： Boot Loader, Firmware upgrade, Juniper SSG 5