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This script outlines a conceptual Zero-Touch Provisioning (ZTP) workflow for a 5G Radio Node (gNB)
_in an O-RAN architecture. It simulates the process of a gNB automatically authenticating and
_connecting to a centralized cloud core upon power-on.
_**Disclaimer:** This is a simplified, conceptual model for illustrative purposes and does not contain
_production-ready code. It uses placeholders for actual network endpoints, credentials, and
_cryptographic functions.
'''
import requests
import json
import time
from cryptography.hazmat.primitives import serialization, hashes
from cryptography.hazmat.primitives.asymmetric import padding
# --- Configuration Placeholders ---
# In a real deployment, these would be securely managed and potentially discovered.
DHCP_SERVER_IP = "192.168.1.1"
PROVISIONING_SERVER_URL = "https://ztp.telecom-dubai.ae"
CLOUD_CORE_AMF_IP = "10.0.0.1"
GNB_SERIAL_NUMBER = "GNB-2024-TD-0001"
# --- Main ZTP Workflow ---
def initiate_ztp_workflow():
"""
Main function to orchestrate the Zero-Touch Provisioning workflow.
"""
print("--- Starting Zero-Touch Provisioning (ZTP) Workflow ---")
# 1. Node Power-On & DHCP Discovery
print("\n[1] gNB Powered On. Discovering DHCP server...")
ip_address, provisioning_server_url = discover_dhcp(DHCP_SERVER_IP)
if not ip_address:
print(" - ZTP Failed: Could not obtain IP address from DHCP server.")
return
print(f" - DHCP Discovery Successful. gNB IP: {ip_address}")
print(f" - Provisioning Server URL: {provisioning_server_url}")
# 2. Authentication with Provisioning Server
print("\n[2] Authenticating with Provisioning Server...")
auth_token = authenticate_with_provisioning_server(provisioning_server_url)
if not auth_token:
print(" - ZTP Failed: Authentication with provisioning server failed.")
return
print(" - Authentication Successful. Received Auth Token.")
# 3. Download Configuration
print("\n[3] Downloading gNB Configuration...")
gnb_config = download_configuration(provisioning_server_url, auth_token)
if not gnb_config:
print(" - ZTP Failed: Could not download configuration.")
return
print(" - Configuration Downloaded Successfully.")
# 4. Connect to 5G Cloud Core
print("\n[4] Connecting to 5G Cloud Core...")
if connect_to_5g_core(gnb_config):
print(" - ZTP Complete: gNB is now provisioned and connected to the 5G Core.")
else:
print(" - ZTP Failed: Could not connect to the 5G Core.")
# --- Helper Functions (Simulated) ---
def discover_dhcp(dhcp_server_ip):
"""
Simulates the DHCP discovery process.
In a real scenario, this would be a broadcast message (DHCPDISCOVER).
"""
# Simulate a request to the DHCP server
# In a real implementation, this would involve low-level networking
time.sleep(1)
return "192.168.1.100", PROVISIONING_SERVER_URL
def authenticate_with_provisioning_server(provisioning_server_url):
"""
Simulates the authentication process with the provisioning server.
This would typically involve mutual TLS (mTLS) with device certificates.
"""
try:
# In a real scenario, the gNB would present a client certificate signed by a trusted CA.
# For this simulation, we'll use a simple token-based authentication.
payload = {
"serial_number": GNB_SERIAL_NUMBER,
"authentication_type": "certificate_placeholder"
}
response = requests.post(f"{provisioning_server_url}/authenticate", json=payload)
if response.status_code == 200:
return response.json().get("auth_token")
else:
return None
except requests.exceptions.RequestException as e:
print(f" - Error connecting to provisioning server: {e}")
return None
def download_configuration(provisioning_server_url, auth_token):
"""
Simulates downloading the gNB configuration from the provisioning server.
"""
try:
headers = {"Authorization": f"Bearer {auth_token}"}
response = requests.get(f"{provisioning_server_url}/config/{GNB_SERIAL_NUMBER}", headers=headers)
if response.status_code == 200:
return response.json()
else:
return None
except requests.exceptions.RequestException as e:
print(f" - Error downloading configuration: {e}")
return None
def connect_to_5g_core(gnb_config):
"""
Simulates the gNB connecting to the 5G Core (AMF).
"""
amf_ip = gnb_config.get("amf_ip")
plmn_id = gnb_config.get("plmn_id")
if amf_ip and plmn_id:
print(f" - Establishing secure connection to AMF at {amf_ip} with PLMN ID {plmn_id}...")
# Simulate a successful connection
time.sleep(2)
return True
else:
return False
if __name__ == "__main__":
initiate_ztp_workflow()
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