Get ARP table from VSP switches…

from nornir import InitNornir
from nornir.plugins.tasks.networking import netmiko_send_command
from nornir.plugins.functions.text import print_result

nr = InitNornir()

result = nr.run(
task=netmiko_send_command,
command_string=”show ip arp”
)

print_result(result)

Hosts.yaml

—
voss-1:
hostname: ‘192.168.1.10’
port: 22
username: ‘rwa’
password: ‘rwa’
platform: ‘extreme_vsp’

voss-2:
hostname: ‘192.168.1.11’
port: 22
username: ‘rwa’
password: ‘rwa’
platform: ‘extreme_vsp’

Device_Type: Extreme_VSP

Get list of IP interfaces…

from netmiko import ConnectHandler
voss1 = {‘device_type’: ‘extreme_vsp’, ‘host’: ‘192.168.1.10’, ‘username’: ‘rwa’, ‘password’: ‘rwa’}
net_connect = ConnectHandler(**voss1)
net_connect.find_prompt()
output = net_connect.send_command(‘show ip interface’)
print(output)

Making a configuration change, for example, disabling FTPD…

from netmiko import ConnectHandler
voss2 = {‘device_type’: ‘extreme_vsp’, ‘host’: ‘192.168.1.11’, ‘username’: ‘rwa’, ‘password’: ‘rwa’}
net_connect = ConnectHandler(**voss2)
net_connect.find_prompt()
net_connect.enable()
net_connect.send_config_set([‘no boot config flags ftpd’])

Device_Type: Extreme_ERS

from netmiko import ConnectHandler
ers1 = {‘device_type’: ‘extreme_ers’, ‘host’: ‘192.168.1.5’, ‘username’: ‘RW’, ‘password’: ‘securepasswd’}
net_connect = ConnectHandler(**ers1)
net_connect.find_prompt()
output = net_connect.send_command(‘show system’)
print(output)

Paramiko script which logs in to VOSS and sets the FTPD boot flag.

Devices.json

{
“voss-1”: {“ip”: “192.168.1.10”},
“voss-2”: {“ip”: “192.168.1.11”}
}

Commands.txt

enable
config t
boot config flags ftpd
exit
save config
exit

Verify changes made to running-config and configuration file on intflash.

show run | I ftpd

show grep ftpd config.cfg

VSP-8284XSQ-1:1#show run | i ftpd
boot config flags ftpd
VSP-8284XSQ-1:1#grep ftpd config.cfg
boot config flags ftpd
VSP-8284XSQ-1:1#

Script:

import paramiko, getpass, time, json

with open(‘devices.json’, ‘r’) as f:
devices = json.load(f)

with open(‘commands.txt’, ‘r’) as f:
commands = f.readlines()

username = input(‘Username: ‘)
password = getpass.getpass(‘Password: ‘)

max_buffer = 65535

def clear_buffer(connection):
if connection.recv_ready():
return connection.recv(max_buffer)

# Starts the loop for devices
for device in devices.keys():
outputFileName = device + ‘_output.txt’
connection = paramiko.SSHClient()
connection.set_missing_host_key_policy(paramiko.AutoAddPolicy())
connection.connect(devices[device][‘ip’], username=username, password=password, look_for_keys=False, allow_agent=False)
new_connection = connection.invoke_shell()
output = clear_buffer(new_connection)
time.sleep(2)
new_connection.send(“terminal more disable\n”)
output = clear_buffer(new_connection)
with open(outputFileName, ‘wb’) as f:
for command in commands:
new_connection.send(command)
time.sleep(2)
output = new_connection.recv(max_buffer)
print(output)
f.write(output)

new_connection.close()

Mastering Python Networking (Paramiko).

import paramiko, getpass, time

devices = {‘voss-1’: {‘ip’: ‘192.168.1.10’},
‘voss-2’: {‘ip’: ‘192.168.1.11’}}
commands = [‘enable\n’, ‘show software\n’, ‘show sys-info card\n’, ‘exit\n’]

username = input(‘Username: ‘)
password = getpass.getpass(‘Password: ‘)

max_buffer = 65535

def clear_buffer(connection):
if connection.recv_ready():
return connection.recv(max_buffer)

# Starts the loop for devices
for device in devices.keys():
outputFileName = device + ‘_output.txt’
connection = paramiko.SSHClient()
connection.set_missing_host_key_policy(paramiko.AutoAddPolicy())
connection.connect(devices[device][‘ip’], username=username, password=password, look_for_keys=False, allow_agent=False)
new_connection = connection.invoke_shell()
output = clear_buffer(new_connection)
time.sleep(5)
new_connection.send(“terminal more disable\n”)
output = clear_buffer(new_connection)
with open(outputFileName, ‘wb’) as f:
for command in commands:
new_connection.send(command)
time.sleep(5)
output = new_connection.recv(max_buffer)
print(output)
f.write(output)

new_connection.close()

Mastering Python Networking (Pexpect).

import getpass
from pexpect import pxssh
import time

devices = {‘VSP-8284XSQ-1’: {‘prompt’: ‘VSP-8284XSQ-1:1>’, ‘ip’: ‘192.168.1.10’}, ‘VSP-8284XSQ-2’: {‘prompt’: ‘VSP-8284XSQ-2:1>’, ‘ip’: ‘192.168.1.11’}}

commands = [‘terminal more disable’, ‘show sys-info card’, ‘terminal more enable’]

username = input(‘Username: ‘)
password = getpass.getpass(‘Password: ‘)

for device in devices.keys():
outputFileName = device + ‘_output.txt’
device_prompt = devices[device] [‘prompt’]
device_ip = devices[device] [‘ip’]
child = pxssh.pxssh()
child.login(devices[device] [‘ip’], username.strip(), password.strip(), auto_prompt_reset=False)
print(‘Logged in to ‘ + device)
with open(outputFileName, ‘wb’) as f:
for command in commands:
child.expect(device_prompt)
child.sendline(command)
time.sleep(1)
f.write(child.before)
child.logout()