关于思科3750交换机堆叠的配置实例和方法以及注意事项

其他的只支持Desktop版本。当3750-12S和其他混合堆叠时就要注意了，会发生SDm不匹配的问题。

3750-Stk# show switch

Current

Switch# Role Mac Address Priority State

------------------------------------------------------------

*2 Master 000a.fdfd.0100 5 Ready 4 Member 0003.fd63.9c00 5 SDM Mismatch

这时，要改变3750-12S的SDM版本到Desktop。

3750-Stk# conf t

3750-Stk(config)# sdm prefer routing desktop

3750-Stk(config)# exit

3750-Stk# reload

四．推荐使用统一软件版本，因为“Switches with different Cisco IOS software versions likely have different stack protocol versions，Switches with different major version numbers are incompatible and cannot exist in the same switch stack.”

用show switch命令可以检测：

3750-Stk# show switch

Current

Switch# Role Mac Address Priority State

--------------------------------------------------------

1 Member 0015.c6f5.6000 1 Version Mismatch *2 Master 0015.63f6.b700 15 Ready

3 Member 0015.c6c1.3000 5 Ready

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