simplefetch

Simplified Paramiko Library to Fetch Data From MultiVendor Network Devices

Supports

• Cisco IOS
• Cisco IOS-XE
• Cisco NX-OS
• Cisco IOS-XR
• Juniper Junos
• Huawei VRP5/8
• ZTE ZXROS
• DELL OS10
• Ericsson IPOS

Script is based on paramiko and catches device-prompt to understand the output is fetched, thus there is a strong possibility that script could work with many network devices from different vendors, i only do not have the chance to test.

Accepted Network Device OS Types

• huawei-vrp
• cisco-ios
• cisco-iosxe
• cisco-iosxr
• cisco-nxos
• junos
• dell-os10
• zte-zxros
• ericsson-ipos
• nokia-sros

For the above device type pagination commands (e.g. "terminal length 0") send automatically.

Simple Example

import simplefetch

test_router = simplefetch.SSH("192.168.1.1", port=22,user="admin", passwd="secret", network_os="cisco-ios")
print (test_router.fetchdata("show version"))
test_router.disconnect()

Example with Logging

import simplefetch,logging
logging.basicConfig(filename='info.log', filemode='a', level=logging.INFO,
                    format='%(asctime)s [%(name)s] %(levelname)s (%(threadName)-10s): %(message)s')
					
test_router = simplefetch.SSH("192.168.1.1" port=22, user="admin", passwd="secret", network_os="cisco-ios")
print (test_router.fetchdata("show version"))
test_router.disconnect() 

Example with Multithreading Python3

# -*- coding: utf-8 -*-
import simplefetch
import logging, time
from threading import Thread
timestr = time.strftime("%Y%m%d-%H%M%S")
log_filename="connection_logs"+str(timestr)+".txt"

#================== Logging
logging.basicConfig(filename=log_filename, filemode='a', level=logging.INFO,
                    format='%(asctime)s [%(name)s] %(levelname)s (%(threadName)-10s): %(message)s')
		    
#==================USER, PASS, ROUTER_LIST==============
username= "username"
password="password"
router_list=["router_name1","192.168.1.1"]

#================== MEMORY check function for huawei devices
def get_memory_usages(router_name):
	try:
		connection = simplefetch.SSH(user=username, passwd=password, network_os="huawei-vrp")
		try:
			display_health_raw= connection.fetchdata("display startup")
			print (router_name)
			print (display_health_raw)
		except:
			logging.warning ("could not get output of command from %s",router_name)
			connection.disconnect()
	except:
		logging.warning ("connection unsuccessful to %s",router_name)
		
#================== multithread part 
import concurrent.futures 
with concurrent.futures.ThreadPoolExecutor(max_workers=10) as executor: 
	for items in router_list:
		executor.submit(get_memory_usages,items) 
executor.shutdown(wait=True)