Python learning for Network Engineers | Part 08 | Cisco SSH using paramiko

𝗙𝗼𝗿 𝗖𝗼𝗺𝗽𝗹𝗲𝘁𝗲 𝗣𝘆𝘁𝗵𝗼𝗻 𝗙𝗼𝗿 𝗡𝗲𝘁𝘄𝗼𝗿𝗸 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝘀 𝗖𝗼𝘂𝗿𝘀𝗲:
𝗘𝗻𝗿𝗼𝗹𝗹 𝗳𝗼𝗿 𝗯𝗲𝗹𝗼𝘄 𝗨𝗱𝗲𝗺𝘆 𝗖𝗹𝗮𝘀𝘀: 𝟐𝟎𝟐𝟐 𝐕𝐞𝐫𝐬𝐢𝐨𝐧
𝑫𝒊𝒔𝒄𝒐𝒖𝒏𝒕𝒆𝒅 𝑹𝒆𝒇𝒆𝒓𝒓𝒂𝒍 𝑳𝒊𝒏𝒌:
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This video will demonstrate how to initiate SSH from Python using paramiko library.
Expains classes in Paramiko, time module, getpass module
Explains about adding delay while executing commands

import paramiko
import time
from getpass import getpass

ip = '10.10.10.10'
username = 'admin'
password = 'admin'

SESSION = paramiko.SSHClient()
SESSION.set_missing_host_key_policy(paramiko.AutoAddPolicy())
SESSION.connect(ip,port=22,
username=username,
password=password,
look_for_keys=False,
allow_agent=False)

DEVICE_ACCESS = SESSION.invoke_shell()
DEVICE_ACCESS.send(b'term length 0\n')
DEVICE_ACCESS.send(b'show run\n')
output = DEVICE_ACCESS.recv(65000)

SESSION.close

[yiyanzhang]

Hi, is there any way we can know whether the command we sent has completed when we use invoke_shell ? When I use invoke_shell to send command, I have to set a timeout (sleep some time),

[pranavireddy]

Thank you for wonderful explanation. Code match to my requirement

[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)

[quintinschnuir]

Hi Firstly thank you for the great videos.
I have an issue with Napalm merg/replace, when i run the code it shows that the configs have been added or not +/-, but when going onto the cisco device the configs have not chnaged. what i found is that when txt file is added to the cisco device (#dir) with the config changes.
how can i correct this so that Napalm makes the changes on the device. Quintin

[sharathbabu]

Thanks for the guidance and great videos. Could you please help me on how to compare the network device configuration against a standard/reference configuration template?

[sasankt]

@NetworkEvolution


how are you getting connected to the Network devices..? can you please redirect me to that video... can you show how to connect this to the GNS3..!!

[ttlhoang]

Thanks for all the great videos. Do you have the git hub link to all your scripts for this series ? Please advice !

[raghavank]

what is the way to install paramiko in Windows without having Microsoft visual studio?

[dnd]

sorry, when we succeed ssh connect, we have type enable password before runing command "show run" or others show command, I can't see anywhere in your code that have enable password, sorry if i get sth wrong.

[praveen]

Valuable video as usual. 

You used getpass to mask the password. However, the password was visible while the CLI prompted for it.

Was getpass called/invoked to even mask the password?