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 1.3.2
下载的新版本boot loader：Loadssg5ssg20v133.d
PC机：安装Solarwinds TFTP Server，其默认根目录默认为c:\TFTP-Root，已经将Loadssg5ssg20v133.d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 1.3.2 (Checksum: A1EAB858)
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

可以看出此时boot loader版本为1.3.2，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 [Loadssg5ssg20v133.d]:Loadssg5ssg20v133.d
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

Loading file "Loadssg5ssg20v133.d"...
rtatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatat
atatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatat
atatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatat
atatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatat
atatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatat
atatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatat
atatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatat
atatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatat
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atatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatat
atatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatat
atatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatat
atatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatat
atatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatat
atatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatat
atatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatata

Loaded Successfully! (size = 408,395 bytes)

Image authenticated!

3、Save to on-board flash disk? (y/[n]/m) No!
此时要选no，因为升级boot loader是一次性的行为，不需要存入on-board flash。

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

    ******************************************************************
    *                                                                *
    *               SSG5/SSG20 BOOT LOADER UPDATE UTILITY            *
    *         ==============================================         *
    *               (c)1997-2006 Juniper Networks, Inc.              *
    *                      All Rights Reserved                       *
    *                                                                *
    *         ----------------------------------------------         *
    *         Boot Loader Version: 1.3.3                             *
    *         Date               : 05/26/2006                        *
    *                                                                *
    *         !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!         *
    *         !                                            !         *
    *         ! Please don't power off during update.      !         *
    *         ! Otherwise, the system can not boot again.  !         *
    *         !                                            !         *
    *         !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!         *
    *                                                                *
    *        *** DON'T POWER OFF DURING BOOT LOADER UPDATE ***       *
    *        *** DON'T POWER OFF DURING BOOT LOADER UPDATE ***       *
    *        *** DON'T POWER OFF DURING BOOT LOADER UPDATE ***       *
    *                                                                *
    ******************************************************************


Check on-board Boot Loader... Update needed!

Are you sure you want to update Boot Loader? (y/n)

选择y。

5、Read product information of on-board boot flash device:
    Manufacturer ID      = 1f
    Device ID            = 13
    Additional Device ID = 10

Boot flash device is AT49LV040B

Erase on-board boot flash device.......... Done

Update Boot Loader..............................................................
................................................................................
................................................................................
................................................................................
................................................................................
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................................................................................
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................................................................................
................................................. Done

Verify Boot Loader... Done

Boot Loader has been updated successfully!

Please hit any key to reboot the system...

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
可以看到Boot Loader的版本已经升级为1.3.3。

标签： Boot Loader, Juniper SSG 5, Upgrade