Python learning for Network Engineers Part 19 | Netmiko ssh and configure Cisco using text file

𝗙𝗼𝗿 𝗖𝗼𝗺𝗽𝗹𝗲𝘁𝗲 𝗣𝘆𝘁𝗵𝗼𝗻 𝗙𝗼𝗿 𝗡𝗲𝘁𝘄𝗼𝗿𝗸 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝘀 𝗖𝗼𝘂𝗿𝘀𝗲:
𝗘𝗻𝗿𝗼𝗹𝗹 𝗳𝗼𝗿 𝗯𝗲𝗹𝗼𝘄 𝗨𝗱𝗲𝗺𝘆 𝗖𝗹𝗮𝘀𝘀: 𝟐𝟎𝟐𝟐 𝐕𝐞𝐫𝐬𝐢𝐨𝐧
𝑫𝒊𝒔𝒄𝒐𝒖𝒏𝒕𝒆𝒅 𝑹𝒆𝒇𝒆𝒓𝒓𝒂𝒍 𝑳𝒊𝒏𝒌:

from netmiko import ConnectHandler
with open('15_devices') as IP_LIST:
for IP in IP_LIST:
RTR = {
'ip': IP,
'username': 'admin',
'password': 'admin',
'device_type': 'cisco_ios',
}

net_connect = ConnectHandler(**RTR)

with open('15_config') as CONFIG_LINES:
CONFIG = CONFIG_LINES.read()
print(output)

print(output)

[NetworkEvolution]

𝗣𝗹𝗮𝘆𝗹𝗶𝘀𝘁: 𝗣𝘆𝘁𝗵𝗼𝗻 𝗟𝗲𝗮𝗿𝗻𝗶𝗻𝗴 𝗳𝗼𝗿 𝗡𝗲𝘁𝘄𝗼𝗿𝗸 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝘀(𝟭𝟮𝟬+ 𝗩𝗶𝗱𝗲𝗼𝘀)
☸𝗣𝗹𝗲𝗮𝘀𝗲 𝗳𝗼𝗹𝗹𝗼𝘄 𝗯𝗲𝗹𝗼𝘄 𝗚𝗶𝘁𝗛𝘂𝗯 𝗣𝗮𝗴𝗲 𝗳𝗼𝗿 𝘁𝗵𝗲 𝗹𝗮𝘁𝗲𝘀𝘁 𝗰𝗼𝗱𝗲𝘀:
𝗣𝗹𝗮𝘆𝗹𝗶𝘀𝘁: 𝗖𝗶𝘀𝗰𝗼 𝗡𝗫𝗔𝗣𝗜-𝗖𝗟𝗜 𝗣𝘆𝘁𝗵𝗼𝗻 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻: 𝗡𝗲𝘅𝘂𝘀 𝟵𝗸 :𝗣𝗮𝗿𝘀𝗲 𝗷𝘀𝗼𝗻 𝗫𝗠𝗟 𝗖𝗼𝗻𝗳𝗶𝗴𝘂𝗿𝗮𝘁𝗶𝗼𝗻 𝗗𝗮𝘁𝗮
𝗣𝗹𝗮𝘆𝗹𝗶𝘀𝘁: 𝗟𝗲𝗮𝗿𝗻 𝘁𝗼 𝗣𝗮𝗿𝘀𝗲 𝗖𝗶𝘀𝗰𝗼 𝗖𝗼𝗻𝗳𝗶𝗴𝘂𝗿𝗮𝘁𝗶𝗼𝗻 𝘂𝘀𝗶𝗻𝗴 𝗣𝘆𝘁𝗵𝗼𝗻 𝗥𝗲𝗴𝗘𝘅:𝗿𝗲 𝗧𝘂𝘁𝗼𝗿𝗶𝗮𝗹(𝟭𝟱+ 𝗩𝗶𝗱𝗲𝗼𝘀)
𝗣𝗹𝗮𝘆𝗹𝗶𝘀𝘁: 𝗖𝗶𝘀𝗰𝗼 𝗜𝗻𝘁𝗲𝗿𝗳𝗮𝗰𝗲 𝗖𝗼𝗻𝗳𝗶𝗴𝘂𝗿𝗮𝘁𝗶𝗼𝗻 𝗣𝗮𝗿𝘀𝗶𝗻𝗴 𝘄𝗶𝘁𝗵 𝗠𝘂𝗹𝘁𝗶𝘁𝗵𝗿𝗲𝗮𝗱𝗶𝗻𝗴 𝗣𝘆𝘁𝗵𝗼𝗻 𝗥𝗲𝗴𝗘𝘅 𝗦𝗰𝗿𝗶𝗽𝘁:𝗧𝗮𝗯𝘂𝗹𝗮𝘁𝗲 𝗧𝗮𝗯𝗹𝗲 𝗲𝘅𝗮𝗺𝗽𝗹𝗲(𝟰 𝗩𝗶𝗱𝗲𝗼𝘀)
𝗣𝗹𝗮𝘆𝗹𝗶𝘀𝘁: 𝗘𝗻𝗮𝗯𝗹𝗲 𝗣𝘆𝘁𝗵𝗼𝗻 𝗠𝘂𝗹𝘁𝗶𝘁𝗵𝗿𝗲𝗮𝗱𝗶𝗻𝗴 𝗶𝗻 𝗖𝗶𝘀𝗰𝗼 𝗖𝗼𝗻𝗳𝗶𝗴 𝗕𝗮𝗰𝗸𝘂𝗽 𝗦𝗰𝗿𝗶𝗽𝘁 𝗳𝗼𝗿 𝗣𝗮𝗿𝗮𝗹𝗹𝗲𝗹 𝗲𝘅𝗲𝗰𝘂𝘁𝗶𝗼𝗻:𝗧𝗵𝗿𝗲𝗮𝗱𝗶𝗻𝗴 𝗧𝘂𝘁𝗼𝗿𝗶𝗮𝗹(𝟰 𝗩𝗶𝗱𝗲𝗼𝘀)
𝗣𝗹𝗮𝘆𝗹𝗶𝘀𝘁: 𝗔𝗻𝘀𝗶𝗯𝗹𝗲 𝗟𝗲𝗮𝗿𝗻𝗶𝗻𝗴 𝗙𝗼𝗿 𝗡𝗲𝘁𝘄𝗼𝗿𝗸 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝘀 : 𝗡𝗲𝘁𝘄𝗼𝗿𝗸 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 𝘁𝘂𝘁𝗼𝗿𝗶𝗮𝗹 𝘄𝗶𝘁𝗵 𝗖𝗶𝘀𝗰𝗼 𝗘𝘅𝗮𝗺𝗽𝗹𝗲𝘀(𝟯𝟬+ 𝗩𝗶𝗱𝗲𝗼𝘀)

[sutiono]

strange, the scripts gave me error "Pattern not detected: 'int\\ lo1\\\nip\\ add\\ 1\\.1\\.1\\.1\\ 255\\.255\\.255\\.255\\\nno\\ shut' in output". Until I realized that the output of read file's content is actually string type, and I had to replace the method from read() into readlines()

[Random_user-sznk]

Perhaps it is covered in an other video, but it seems more optimal to have your 15_device.txt file formatted to JSON (or another standard data format) saved and imported as a 15_devices.json

[adityaprasaddash]

Nice playlist. I am facing issues to fetch files from notepad. Don't know where to save it in windows 10. Could any one pls help

[NetworkTechnician]

It's fine, but the same loop back on both devices?

[gusyee]

how to input the enable secret password ??

I try with net_connect.enable() . But not type automatic enable and password

[HimanshuGupta]

Hello Team, Its an amazing playlist. But in this video script is not working properly.
Its working only when I have single line in config file. however, devices are fine with multiple lines.
please guide.

[mjk]

I tried the script, but only my last device gets read out of the device list. Any idea of why that would happen?

[milan]

mjk2374
, the same problem! result of ther script:


Connecting to device 10.24.82.33

Connecting to device 10.24.81.161
config term
Enter configuration commands, one per line. End with CNTL/Z.
a-rtr(config)#int lo1
a-rtr(config-if)#des TEST
a-rtr(config-if)#ip add 10.5.5.5 255.255.255.255
a-rtr(config-if)#exi
a-rtr(config)#exi
a-rtr#wr
Building configuration...
[OK]
a-rtr#


As we can see the script worked correctly only on the last router...if it will be 5 routers he will print "Connecting to device X.X.X.X" 5 times and only last router will be with commands...This is because the end of the cycle....and I don’t know how to make the script set up commands on each router...can you help me? Here the cript
from netmiko import ConnectHandler
import getpass
import sys


USER = input('Username: ')
PASSWORD = getpass.getpass()


IP_LIST = open('3_devices.txt')
for IP in IP_LIST:
RTR = {'device_type': 'cisco_ios',
'ip': IP,
'username': USER,
'password': PASSWORD}




print ('Connecting to device ' + IP)


with ConnectHandler(**RTR) as ssh:
ssh.enable()


output =

print(output)

When I try to insert with ConnectHandler (** RTR) as ssh into the cycle i have a mistake:
File "file5.py", line 23
with ConnectHandler(**RTR) as ssh:
^
TabError: inconsistent use of tabs and spaces in indentation
Help plz

[mukeshyadav]

Hello Team, Script is not working properly for me getting error. And i'm using Linux OS. Can you please help in it.


Script:-
from netmiko import ConnectHandler
with open('Devices') as IP_LIST:
for IP in IP_LIST:
Switches = {
'ip': IP,
'username': 'cisco',
'password': 'cisco',
'device_type': 'cisco_ios',
}

print ('connecting to device ' + IP)

net_connect = ConnectHandler(**Switches)

with open('config') as CONFIG_LINES:
CONFIG = CONFIG_LINES.read()
output =
print(output)

output = ip int brief')
print(output)

Error:-

connecting to device 192.168.122.51

Traceback (most recent call last):
File "/usr/local/lib/python3.8/dist-packages/paramiko/channel.py", line 699, in recv
out = self.in_buffer.read(nbytes, self.timeout)
File "/usr/local/lib/python3.8/dist-packages/paramiko/buffered_pipe.py", line 164, in read
raise PipeTimeout()


During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/local/lib/python3.8/dist-packages/netmiko/base_connection.py", line 569, in _read_channel_expect
new_data =
File "/usr/local/lib/python3.8/dist-packages/paramiko/channel.py", line 701, in recv
raise socket.timeout()
socket.timeout

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "abc.py", line 18, in <module>
output =
File "/usr/local/lib/python3.8/dist-packages/netmiko/base_connection.py", line 1875, in send_config_set
new_output =
File "/usr/local/lib/python3.8/dist-packages/netmiko/base_connection.py", line 651, in read_until_pattern
return self._read_channel_expect(*args, **kwargs)
File "/usr/local/lib/python3.8/dist-packages/netmiko/base_connection.py", line 579, in _read_channel_expect
raise NetmikoTimeoutException(
Timed-out reading channel, data not available.