GNS3 Talks: Python for Network Engineers with GNS3 (Part 5) - Multiple switches, multiple VLANs - ISSUE

[moodhacker]

Hello David. Any reason why this only configure one switch? I am able to telnet from my SW1 to all the devices and also from my home laptop that run the script. Every time I ran it, it only configure SW4, if I reduce the range, it will take any of the random SW

#!/usr/local/bin/python3.9

import getpass
import sys
import telnetlib

user = input("Enter your telnet user name: ")
password = getpass.getpass()

for n in range (10,14):
HOST = "10.115.0." + str(n)
tn = telnetlib.Telnet(HOST)

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

tn.write(b"config t\n")

for n in range(2,11):
     tn.write(b"vlan " + str(n).encode('ascii') + b"\n")
     tn.write(b"name Python_VLAN_" + str(n).encode('ascii') + b"\n")

tn.write(b"end\n")
tn.write(b"write\n")
tn.write(b"exit\n")

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