Automation

I am attempting to run some scripts on an NFX250 through a serial connection. I need to use the StartShell module (which internally uses paramiko) as I want to make changes to some files from the shell which cannot be directly accessed by the CLI. 

from jnpr.junos import Device
from jnpr.junos.utils.start_shell import StartShell

dev = Device(host='10.10.10.11',port="7018",mode="telnet", user='root', password='xyz')
dev.open()

with StartShell(dev) as ss:

        ret, got=ss.run('cli')
        print(got+"\n")

dev.close()

I am getting the following error message

root@dc71:~/ztp_dir# python final_ztp.py 
Traceback (most recent call last):
  File "final_ztp.py", line 6, in <module>
    with StartShell(dev) as ss:
  File "/usr/local/lib/python2.7/dist-packages/jnpr/junos/utils/start_shell.py", line 162, in __enter__
    self.open()
  File "/usr/local/lib/python2.7/dist-packages/jnpr/junos/utils/start_shell.py", line 93, in open
    password=junos._auth_password,
  File "/usr/local/lib/python2.7/dist-packages/paramiko/client.py", line 424, in connect
    passphrase,
  File "/usr/local/lib/python2.7/dist-packages/paramiko/client.py", line 714, in _auth
    raise saved_exception
paramiko.ssh_exception.BadAuthenticationType: ('Bad authentication type', [u'publickey', u'keyboard-interactive']) (allowed_types=[u'publickey', u'keyboard-interactive'])

 When I tried running the script manually using the python shell, I got the error while opening the StartShell connection.

>>> 
>>> from jnpr.junos import Device
>>> from jnpr.junos.utils.start_shell import StartShell
>>> dev = Device(host='10.10.10.11',port="7018",mode="telnet", user='root', password='xyz')
>>> dev.open()
Device(10.10.10.11)
>>> ss=StartShell(dev)
>>> ss.open()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python2.7/dist-packages/jnpr/junos/utils/start_shell.py", line 93, in open
    password=junos._auth_password,
  File "/usr/local/lib/python2.7/dist-packages/paramiko/client.py", line 424, in connect
    passphrase,
  File "/usr/local/lib/python2.7/dist-packages/paramiko/client.py", line 714, in _auth
    raise saved_exception
paramiko.ssh_exception.BadAuthenticationType: ('Bad authentication type', [u'publickey', u'keyboard-interactive']) (allowed_types=[u'publickey', u'keyboard-interactive'])
>>> 

This is not exclusive to NFX250 and I am facing the same issue with an EX2200 as well. The error states "BadAuthenticationType" but the same script works fine if I run it on the management IP instead of the telnet console server, with the same username and password. Need to make changes to a recently zeroized device (hence using console connection).

I would be grateful if anyone can help me troubleshoot this. Thank you.