python 3.x - Napalm connection to Cisco IOS router using telnet

Question

I'm trying to use Napalm to connect to Cisco routers using telnet from the python chevron and getting an error from netmiko.ssh.

Here is the snippet that I am using

from napalm import get_network_driver

driver = get_network_driver('ios')

with driver('ip_address', 'username', 'password', optional_args={'port': 23,'transport': telnet}) as device:

    print(device.get_facts())

Here is the error message that I am receiving:

NAPALM didn't catch this exception. Please, fill a bugfix on https://github.com/napalm-automation/napalm/issues
Don't forget to include this traceback.
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:Program FilesPython39libsite-packages
apalmasease.py", line 46, in __enter__
    self.open()
  File "C:Program FilesPython39libsite-packages
apalmiosios.py", line 169, in open
    self.device = self._netmiko_open(
  File "C:Program FilesPython39libsite-packages
apalmasease.py", line 86, in _netmiko_open
    self._netmiko_device = ConnectHandler(
  File "C:Program FilesPython39libsite-packages
etmikossh_dispatcher.py", line 312, in ConnectHandler
    return ConnectionClass(*args, **kwargs)
  File "C:Program FilesPython39libsite-packages
etmikociscocisco_ios.py", line 17, in __init__
    return super().__init__(*args, **kwargs)
  File "C:Program FilesPython39libsite-packages
etmikoase_connection.py", line 346, in __init__
    self._open()
  File "C:Program FilesPython39libsite-packages
etmikoase_connection.py", line 351, in _open
    self.establish_connection()
  File "C:Program FilesPython39libsite-packages
etmikoase_connection.py", line 910, in establish_connection
    self.telnet_login()
  File "C:Program FilesPython39libsite-packages
etmikocisco_base_connection.py", line 171, in telnet_login
    raise NetmikoAuthenticationException(msg)
netmiko.ssh_exception.NetmikoAuthenticationException: Login failed: ip_address

Answer 1

Login failed on the host with name ip_address, if 'ip_address' is the name of the host you trying to connect, maybe you can to put the host IP in place.

I believe that this short video can help you https://www.youtube.com/watch?v=QTapxlSEo1E

Do you ask yourself where to put the host address?

The name of the host you are trying to connect is 'ip_address'?

The same question to the fields 'username' and 'password'.

You are near. The best for you!