环境 Cisco router
　　问题 Some emergency situation is the console port is broken and we can try to Access the router by some other ways.
　　解答 When the console is good or you can access the router normaly. You should set the passWord on the aux port or on the vty line.
　　
　　Of course you should remember the enable secret password. If the console broken occur, you can try to telnet the router OR you can put the console line into the aux port when the router has been fully bootup. And you can type the 'Enter' and input the aux access password and access to the user mode of the router.
　　
　　If possible, do the replace of the parts later.
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