兩臺3750X-24T之前是用了不同版本的IOS做的堆疊：
Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 30 WS-C3750X-24 15.0(2)SE9 C3750E-UNIVERSALK9-M
2 30 WS-C3750X-24 15.0(2)SE9 C3750E-UNIVERSALK9NPE-M
show boot:
BOOT path-list : flash:/c3750e-universalk9-mz.150-2.SE9.bin
Config file : flash:/config.text
Private Config file : flash:/private-config.text
Enable Break : no
Manual Boot : no
Allow Dev Key : yes
HELPER path-list :
Auto upgrade : yes
Auto upgrade path :
NVRAM/Config file
buffer size: 524288
Timeout for Config
Download: 0 seconds
Config Download
via DHCP: disabled (next boot: disabled)
-------------------
Switch 2
-------------------
BOOT path-list : flash:/c3750e-universalk9npe-mz.150-2.SE9.bin
Config file : flash:/config.text
Private Config file : flash:/private-config.text
Enable Break : no
Manual Boot : no
Allow Dev Key : yes
HELPER path-list :
Auto upgrade : no
Auto upgrade path :
我現在要升級他們的IOS，switch 1 用IOS 1， switch 2 用IOS 2分別啟動，但是boot命令中好像沒有提到如何指定switch2用IOS 2 啟動，各位有沒有什么辦法？還是說我只能把堆疊線撥了，分開啟動之后再接上堆疊線？
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