在老的N7K设备上，由于存在模块固件校验，导致无法使用其他友商的模块，具体的操作步骤如下：

Step1:打开unsupported-transceiver

在配置模式下敲入以下命令，该命令为隐含命令：

N7K(config)#service unsupported-transceiver

会弹出以下警告信息：

Warning: When Cisco determines that a fault or defect can be traced to the use of third-party transceivers installed by a customer or reseller, then, at Cisco's discretion, Cisco may withhold support under warranty or a Cisco support program. In the course of providing support for a Cisco networking product Cisco may require that the end user install Cisco transceivers if Cisco determines that removing third-party parts will assist Cisco in diagnosing the cause of a support issue.

Step2:插入第三方的光模块