Cisco的最新万兆模块（比如XENPAK-10GB-ER+），支持DOM。DOM到底是什么功能？
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热心网友
DOM即Digital Optical Monitoring功能。
This feature gives the end user the ability to monitor real-time parameters of the SFP, such as optical output power, optical input power, temperature, laser bias current, and transceiver supply voltage.
该特性允许终端用户对SFP光模块进行实时参数的监控，例如光输出功率、光输入功率、环境温度、激光偏移电流、接收器工作电压等参数。
参考资料：http://hi.baidu.com/freelancer_194/blog/item/2624f7c3e0654b58b319a811.html
热心网友
DOM即Digital Optical Monitoring功能。
This feature gives the end user the ability to monitor real-time parameters of the SFP, such as optical output power, optical input power, temperature, laser bias current, and transceiver supply voltage.
该特性允许终端用户对SFP光模块进行实时参数的监控，例如光输出功率、光输入功率、环境温度、激光偏移电流、接收器工作电压等参数。
参考资料：http://hi.baidu.com/freelancer_194/blog/item/2624f7c3e0654b58b319a811.html
