Establish SSH session for remote execution and output of network device configurations

Import modules

import getpass import paramiko import time import sys

def disable_paging(remote_conn): '''Disable paging on a Cisco router'''

remote_conn.send("terminal length 0\n")
time.sleep(1)

Clear the buffer on the screen

output = remote_conn.recv(1000)

return output

if name == 'main':

Define variables

Prompt users for IP, username, and admin of remote switch/router

ip = input("Please enter the IP address:") username= input("Please enter username of network device:") # password= input("Please enter password of network device:") password= getpass.getpass("Please enter password of network device:")

Create SSH Object

remote_conn_pre=paramiko.SSHClient() remote_conn_pre

Add untrusted host

remote_conn_pre.set_missing_host_key_policy( paramiko.AutoAddPolicy())

Initate SSH session

remote_conn_pre.connect(ip, username=username, password=password, look_for_keys=False, allow_agent=False) print ("SSH connection established to %s" % ip)

Use invoke_shell to establish an 'interactive session'

remote_conn = remote_conn_pre.invoke_shell() print ("Interactive SSH session established")

Strip the initial router prompt

output = remote_conn.recv(1000)

See what we have

print (output)

Flush the output buffer

sys.stdout.flush()

Turn off paging

disable_paging(remote_conn)

Prompt for user exec password

remote_conn.send("\n") remote_conn.send("enable terminal") password= getpass.getpass("Please enter enable terminal password of network device:")

Send show commands and output individual files for the 'running-config', 'startup-config', and 'show version'

Send running-config command

remote_conn.send("\n") remote_conn.send("show running-config\r\n")

Wait for the command to complete

time.sleep(2)

Read all output returned

output = remote_conn.recv(65534)

print (output)

Flush the buffer

sys.stdout.flush()

Output running-config to txt file

with open('running-config.txt', 'wb') as f_out: f_out.write(output)

print ('running-config')

Send startup-config command

remote_conn.send("\n") remote_conn.send("show startup-config\r\n")

Wait for the command to complete

time.sleep(2)

Read all output returned

output = remote_conn.recv(65534)

print (output)

Flush the buffer

sys.stdout.flush()

Output startup-config to txt file

with open('startup-config.txt', 'wb') as f_out: f_out.write(output)

print ('startup-config')

Send show version command

remote_conn.send("\n") remote_conn.send("show version\r\n")

Wait for the command to complete

time.sleep(2)

Read all output returned

output = remote_conn.recv(65534)

print (output)

Flush the buffer

sys.stdout.flush()

Output running-config to txt file

with open('show-version.txt', 'wb') as f_out: f_out.write(output)

print ('show version')

*** Run show commands to be returned to a single text file ***#

Send "show run | incl enable secret" command

remote_conn.send("\n") remote_conn.send("show run | incl enable secret\r\n")

Wait for the command to complete

time.sleep(2)

print (output)

sys.stdout.flush()

Send "show startup-config" command

remote_conn.send("\n") remote_conn.send("show startup-config\r\n")

Wait for the command to complete

time.sleep(2)

print (output)

sys.stdout.flush()

Send "show run | beg banner"

remote_conn.send("\n") remote_conn.send("show run | beg banner\r\n")

Wait for the command to complete

time.sleep(2)

print (output)

sys.stdout.flush()

Send "show run | incl incl tcp small-servers" command

remote_conn.send("\n") remote_conn.send("show run | incl tcp-small-servers\r\n")

Wait for the command to complete

time.sleep(2)

print (output)

sys.stdout.flush()

Send "show run | incl udp-small-servers" command

remote_conn.send("\n") remote_conn.send("show run | incl udp-small-servers\r\n")

Wait for the command to complete

time.sleep(2)

print (output)

sys.stdout.flush()

Output show run command to text file

with open('output.txt', 'wb') as f_out: f_out.write(output)

print (output)

sys.stdout.flush()

Send "show run | incl service pad" command

remote_conn.send("\n") remote_conn.send("show run | incl service pad\r\n")

Wait for the command to complete

time.sleep(2)

print (output)

sys.stdout.flush()

Send "show run | incl service tcp" command

remote_conn.send("\n") remote_conn.send("show run | incl service tcp\r\n")

Wait for the command to complete

time.sleep(2)

print (output)

sys.stdout.flush()

Send "show run | incl finger" command

remote_conn.send("\n") remote_conn.send("show run | incl finger\r\n")

Wait for the command to complete

time.sleep(2)

print (output)

sys.stdout.flush()

Send "show run | incl http secure" command

remote_conn.send("\n") remote_conn.send("show run | incl http secure\r\n")

Wait for the command to complete

time.sleep(2)

print (output) sys.stdout.flush()

Send "show run | incl boot network" command

remote_conn.send("\n") remote_conn.send("show run | incl boot network\r\n")

Wait for the command to complete

time.sleep(2)

Output show run command to text file

with open('output.txt', 'wb') as f_out: f_out.write(output)

print (output)

sys.stdout.flush()

Send "show run | incl service config" command

remote_conn.send("\n") remote_conn.send("show run | incl service config\r\n")

Wait for the command to complete

time.sleep(2)

print (output)

sys.stdout.flush()

Send "show ntp associations" command

remote_conn.send("\n") remote_conn.send("show ntp associations\r\n")

Wait for the command to complete

time.sleep(2)

print (output)

sys.stdout.flush()

Send "show vlan-switch" command

remote_conn.send("\n") remote_conn.send("show vlan-switch\r\n")

Wait for the command to complete

time.sleep(2)

Output show run command to text file

with open('output.txt', 'wb') as f_out: f_out.write(output)

print (output)

sys.stdout.flush()

Send "show interfaces trunk" command

remote_conn.send("\n") remote_conn.send("show interfaces trunk\r\n")

Wait for the command to complete

time.sleep(2)

print (output)

sys.stdout.flush()

Send "show interfaces" command

remote_conn.send("\n") remote_conn.send("show interfaces\r\n")

Wait for the command to complete

time.sleep(2)

Output show run command to text file

with open('output.txt', 'wb') as f_out: f_out.write(output)

print (output)

sys.stdout.flush()

Send "show run | incl logging" command

remote_conn.send("\n") remote_conn.send("show run | incl logging\r\n")

Wait for the command to complete

time.sleep(2)

print (output)

sys.stdout.flush()

Send "show run | beg vty 0" command

remote_conn.send("\n") remote_conn.send("show run | beg vty 0\r\n")

Wait for the command to complete

time.sleep(2)

print (output)

sys.stdout.flush()

Send "show line con 0 | begin Timeout" command

remote_conn.send("\n") remote_conn.send("show line con 0 | begin Timeout\r\n")

Wait for the command to complete

time.sleep(2)

with open('output.txt', 'wb') as f_out: f_out.write(output)

print (output)

sys.stdout.flush()

Send "show ip ssh" command

remote_conn.send("\n") remote_conn.send("show ip ssh\r\n")

Wait for the command to complete

time.sleep(2)

print (output)

sys.stdout.flush()

Send "show snmp" command

remote_conn.send("\n") remote_conn.send("show snmp\r\n")

Wait for the command to complete

time.sleep(2)

print (output)

sys.stdout.flush()

Send "show snmp community" command

remote_conn.send("\n") remote_conn.send("show snmp community\r\n")

Wait for the command to complete

time.sleep(2)

Output show run command to text file

with open('output.txt', 'wb') as f_out: f_out.write(output)

print (output)

sys.stdout.flush()

Send "show access-lists" command

remote_conn.send("\n") remote_conn.send("show access-lists\r\n")

Wait for the command to complete

time.sleep(2)

print (output)

sys.stdout.flush()

Send "show run | incl dot1x" command

remote_conn.send("\n") remote_conn.send("show run | incl dot1x\r\n")

Wait for the command to complete

time.sleep(2)

print (output)

sys.stdout.flush()

Send "show port-security" command

remote_conn.send("\n") remote_conn.send("show run | incl dot1x\r\n")

Wait for the command to complete

time.sleep(2)

print (output)

sys.stdout.flush()

Send "show interface pruning" command

remote_conn.send("\n") remote_conn.send("show interface pruning\r\n")

Wait for the command to complete

time.sleep(2)

print (output)

sys.stdout.flush()

Send "show snmp group" command

remote_conn.send("\n") remote_conn.send("show snmp group\r\n")

Wait for the command to complete

time.sleep(2)

output = remote_conn.recv(65534) print (output) sys.stdout.flush()

Output show run command to text file

with open('output.txt', 'wb') as f_out: f_out.write(output)

print ('output')

sys.stdout.flush()

End SSH session

#close (f_out) print ("Script finished, closing SSH connection") remote_conn.close()