2012年2月9日星期四
下一代主机是否应该可升级？ zz
游戏主机和PC不同，你会看到最新的游戏能运行在五年前的主机硬件上，但不太可能运行在五年前的PC上。主机的核心系统是不可升级的， 任何升级核心系统性能的企图都将面临分化玩家基数，增加开发者工作负担以确保游戏能流畅运行在原版和升级版上。另一个不能升级的原因是，许多游戏都依赖特 定的硬件特性确保运行正确。例如，PC的中央处理器二级缓存从256K升级到512K，不会对平台支持带来任何问题，现有的程序可以自动利用额外的二级缓 存。然而Xbox 360允许程序员锁定特定的缓存块，在特定线程中使用它们储存数据。在这种情况下，增加二级缓存将改变缓存地址范围，使游戏无法正确运行。非核心硬件的升 级则完全可能，Xbox 360今天使用的储存设备速度是旧版本的10倍以上，支持HDMI和WiFi。因此，微软和索尼的新一代主机至少应该提供适度的可升级性。
2010年8月19日星期四
Juniper SSG 5升级boot loader
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
atatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatat
atatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatat
atatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatat
atatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatat
atatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatat
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..............................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................. 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。
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
atatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatat
atatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatat
atatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatat
atatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatat
atatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatatat
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..............................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................. 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
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