Use the tftp function of Linux to configure a cisco Router

Use the tftp function of Linux to configure information about cisco router-Linux Enterprise Application-Linux server application. The following is a detailed description. In a LAN environment, if there are Cisco routers and Linux servers. Maybe you need to use Linux
The TFTP service downloads the Cisco router configuration file startup-config, edits it on the server, and then uploads
To the vro, there are some special considerations in implementation.
Software and Hardware used: Redhat Linux 5.2, Cisco 2501 Router

1. Enable the tftp service on the Redhat Linux server and specify the download directory/tmp.

[Jephe @ sh89/etc] $ more inetd. conf | grep tftp
Tftp dgram udp wait root/usr/sbin/tcpd in. tftpd/tmp
Run the command killall-HUP inetd to start it.

2. Set the/tmp permission so that others have the write permission (chmod 777/tmp ).
[Jephe @ sh89/] $ ls-l | grep tmp
Drwxrwxrwx 5 root 2048 Jun 16 07:44 tmp
3. Create an empty file (such as isdn) in the/tmp directory and set the permission (chmod 777/tmp/isdn)
[Root @ shopu/tmp] # touch isdn
[Root @ shopu/tmp] # chmod 777 isdn
[Root @ shopu/tmp] # ls-l isdn
-Rwxrwxrwx 1 root 0 Jun 16 :24 isdn
4. Enter the vro and download the configuration file.
Shanghai-ISDN # copy run tftp
Remote host [192.168.13.2]?
Name of configuration file to write [shanghai-isdn-confg]? Isdn
Write file isdn on host 192.168.13.2? [Confirm]
Building configuration...

Writing isdn !! [OK]

Note: You must set the permission correctly and create an empty file before downloading. Otherwise, an error is prompted.