Python configures Cisco network devices with Telnet

！！ Using the Telnetlib Library
1 topologies


R4, R5 are not routed to 1.1.1.1 and 2.2.2.2 when the script is not running:

The configuration document is placed in the same directory as the Python script:


After running the Python script:
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Success!

#conf.py 文件import timefrom telnetlib import Telnetdef cfg(addr,user,pwd,secret,conf):        tn = Telnet(addr)        tn.write(user+‘\n‘)        tn.write(pwd+‘\n‘)        tn.write(‘enable\n‘)        tn.write(secret+‘\n‘)        tn.write(‘terminal length 0\n‘)        time.sleep(1)        tn.write(‘conf t\n‘)        time.sleep(1)        confp = open(conf,‘r‘)        for cmd in confp:          tn.write(cmd)    #应为读一行的时候已经有换行符了，所以这里就不添加+‘\n‘了          print(cmd)       #用于查看读取的命令          time.sleep(1)    #建议每条命令都休眠一下，不然可能配置不了        confp.close()if __name__ == "__main__":        fp = open(‘./ip.txt‘,‘r‘)    #如果有多台主机要配置同样的命令的话，可以将主机IP都放在一个文档中        for ip in fp:          print("configuring "+ip.strip())          conf = cfg(ip.strip(),‘cisco‘,‘cisco‘,‘cisco‘,‘./conf.txt‘)          print(ip.strip()+‘ was finished!‘)        print(‘done!‘)        fp.close()

#ip. txt//Add as needed
172.16.1.4
172.16.2.5

#conf. txt//Add as needed
IP Route 1.1.1.1 255.255.255.255 f0/0
IP Route 2.2.2.2 255.255.255.255 f0/0
Do write

Python configures Cisco network devices with Telnet