1.使用3CDaemon搭建tftp服务端
2.将交换机的IOS版本放在tftp指定的目录里
3.电脑与交换机的网络打通
4.执行如下红色命令
C9300#copy tftp://192.168.99.102/cat9k_iosxe.17.06.04.SPA.bin flash: Destination filename [cat9k_iosxe.17.06.04.SPA.bin]? Accessing tftp://192.168.99.102/cat9k_iosxe.17.06.04.SPA.bin... Loading cat9k_iosxe.17.06.04.SPA.bin from 192.168.99.102 (via Vlan99): !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! [OK - 1017587860 bytes]
1017587860 bytes copied in 329.790 secs (3085563 bytes/sec) C9300#