import getpass
import telnetlib
import time

user= "root"
password = "admin"

print("Router Script")

HOST = "192.168.100.1" #the gateway of the router

tn = telnetlib.Telnet(HOST)

tn.set_debuglevel(7) #the master of puppets

tn.read_until(b"Login:")
time.sleep(1)
tn.write(user.encode('ascii') + b"n")

tn.read_until(b"Password:")
tn.write(password.encode('ascii') + b"n")

tn.read_until(b"WAP>")
tn.write(b"display ip routen" )

print(tn.read_all().decode('ascii'))