#! /usr/bin/env python

import requests

import json

import argparse

# Diable InsecureRequestWarning

requests.packages.urllib3.disable_warnings(

requests.packages.urllib3.exceptions.InsecureRequestWarning

)

# DevNet Always-On Sandbox DNA Center

# https://devnetsandbox.cisco.com/RM/Diagram/Index/471eb739-323e-4805-b2a6-d0ec813dc8fc?diagramType=Topology

dnac = {

"host": "sandboxdnac2.cisco.com",

"username": "devnetuser",

"password": "Cisco123!",

"port": 443,

}

# Headers for DNAC

headers = {"content-type": "application/json", "x-auth-token": ""}

def dnac_login(dnac, port, username, password):

"""

Use the REST API to Log into an DNA Center and retrieve ticket

"""

url = "https://{}:{}/dna/system/api/v1/auth/token".format(dnac, port)

# Make Login request and return the response body

response = requests.request(

"POST", url, auth=(username, password), headers=headers, verify=False

)

return response.json()["Token"]

def host_list(dnac, ticket, ip=None):

"""

Use the REST API to retrieve the list of hosts.

Optional parameters to filter by:

IP address

MAC address

Hostname

"""

url = "https://{}/api/v1/host?hostIp={}".format(dnac, ip)

headers["x-auth-token"] = ticket

filters = []

# Make API request and return the response body

response = requests.request("GET", url, headers=headers, verify=False)

return response.json()["response"]

def print_host_details(host):

"""

Print to screen interesting details about a given host.

Input Paramters are:

host_desc: string to describe this host. Example "Source"

host: dictionary object of a host returned from dnac

Standard Output Details:

Host Name (hostName) - If available

Host IP (hostIp)

Host MAC (hostMac)

Network Type (hostType) - wired/wireless

Host Sub Type (subType)

VLAN (vlanId)

Connected Network Device (connectedNetworkDeviceIpAddress)

Wired Host Details:

Connected Interface Name (connectedInterfaceName)

Wireless Host Details:

Connected AP Name (connectedAPName)

"""

# If optional host details missing, add as "Unavailable"

if "hostName" not in host.keys():

host["hostName"] = "Unavailable"

# Print Standard Details

print("Host Name: {}".format(host["hostName"]))

print("Network Type: {}".format(host["hostType"]))

print(

"Connected Network Device: {}".format(

host["connectedNetworkDeviceIpAddress"]

)

) # noqa: E501

# Print Wired/Wireless Details

if host["hostType"] == "wired":

print(

"Connected Interface Name: {}".format(

host["connectedInterfaceName"]

)

) # noqa: E501

if host["hostType"] == "wireless":

print("Connected AP Name: {}".format(host["connectedAPName"]))

# Print More Standard Details

print("VLAN: {}".format(host["vlanId"]))

print("Host IP: {}".format(host["hostIp"]))

print("Host MAC: {}".format(host["hostMac"]))

print("Host Sub Type: {}".format(host["subType"]))

# Blank line at the end

print("")

# Entry point for program

if __name__ == "__main__":

# Setup Arg Parse for Command Line parameters

import argparse

parser = argparse.ArgumentParser()

# Command Line Parameters for Source and Destination IP

parser.add_argument("source_ip", help="Source IP Address")

parser.add_argument("destination_ip", help="Destination IP Address")

args = parser.parse_args()

# Get Source and Destination IPs from Command Line

source_ip = args.source_ip

destination_ip = args.destination_ip

# Print Starting message

print("Running Troubleshooting Script for ")

print(" Source IP: {} ".format(source_ip))

print(" Destination IP: {}".format(destination_ip))

print("")

# Log into the dnac Controller to get Ticket

token = dnac_login(

dnac["host"], dnac["port"], dnac["username"], dnac["password"]

)

# Retrieve Host Details from dnac

source_host = host_list(dnac["host"], token, ip=source_ip)

destination_host = host_list(dnac["host"], token, ip=destination_ip)

# Print Out Host details

print("Source Host Details:")

print("-" * 25)

print_host_details(source_host[0])

print("Destination Host Details:")

print("-" * 25)

print_host_details(destination_host[0])