Creating VLANs using Python Script on a Cisco switch -- > GNS3 LAB (PART - 1)

Code

 #! /usr/bin/env python
import getpass
import sys
import telnetlib

HOST = "10.10.10.11" #the IP address of the switch
user = raw_input("Enter your Telnet username ")
password = getpass.getpass()

tn = telnetlib.Telnet(HOST) #establishing telnet session with the defined switch

tn.read_until("Username: ")
tn.write(user + "\n")
if password:
        tn.read_until("Password: ")
        tn.write(password + "\n")

tn.write ("conf t\n")

for n in range (2,10): # create VLANs 2-9
        tn.write ("vlan " + str(n) + "\n")
        tn.write ("name python_vlan_" + str(n) + "\n")
        tn.write ("exit\n")     

tn.write ("end\n")
tn.write ("exit\n") #exit the telnet session

print tn.read_all()

Running the script

Only default VLANs can be observed before running the script.

   VLANs after running the script.