seeking a framework to automate router configurations

[Frank Cui]

Hi Pythoners,
I'm looking for a tool or framework in which I can do a slight modification to achieve the following task:
"Asynchronously reset a large number of cisco routers back to their original configurations and push prepared initial configurations to them"
I did find some similar existing work such as exscript and trigger, however I was stuck in the following two problems :
1. telneting to a non-default port number (other than 23)2. handling of customized banner messages.
can you give some hints on this ?  Thanks in advance for your input.
Frank

 		 	   		  
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