这里记录一下telnet上后的命令:
3550-1>en \进入特权模式
password:
3550-1#show ip inter brif \查看端口状态
3550-1#configure terminal \配置
3550-1<config>#interface fastethernet 0/19 \端口19
3550-1<config>#no shutdown \重启
3550-1<config>#end
3550-1#show interface status
3550-1#exit
转载于:https://www.cnblogs.com/siri/archive/2012/10/16/2725365.html