[Tutor] Telnet to cisco device

[STREET Gideon (SPARQ)]

Hi all,

I'm trying to get a script together to automate adding a couple of
commands across a lot of cisco switches.  Thought I'd try to get the
script working correctly on one switch first.  I've been reading a few
online tutorials and have managed to kludge up the following (which
fails where commented).  Anyone able to advise where I may be going
wrong?

I'm sitting on a windows box here at work, otherwise I'd see what I
could get expect to do.

Thanks

Gideon

--------------------
import getpass
import sys
import telnetlib

HOST = 'switch_name'  # this is the hostname for device, to be changed
to read from file when figure that out
user = raw_input('Username: ')
password = getpass.getpass()

tn = telnetlib.Telnet(HOST) #make less typing for me

tn.read_until('Username: ') #expected prompt after telnetting to the
router
tn.write(user + '\r\n')  #hopefully write username and pass character
return

raw_input('ENTER to continue') # just to see if it makes this far

# this is where the program appears to hang

tn.read_until('Password: ') #expected prompt after putting in the
username
tn.write(password + '\r\n')


tn.read_until(HOST + ">") #expected prompt is "hostname>"
tn.write('enable \n') # go to exec mode

tn.read_until('Password: ') #prompt to go to exec mode
tn.write(password + '\n')


tn.read_until(HOST + '#')  #this should be the prompt after enable
"hostname#"
tn.write('sh int status' '\r\n') #run this command, read this from file
when i figure out how

tn.read_until(HOST + '#') #prompt once above command has finished
running, useful when reading multiple commands

tn.write('exit' '\R\N') #disconnect from the session

print tn.read_all() #prints out something, maybe needs to be prior to
"exit" command

tn.close()
 


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