Este script testa a conexão de uma lista de ips, conecta via telnet todos os que estão disponíveis, aplica e salva em arquivos separados as configurações necessárias dos roteadores. Muito útil para ambientes Wan com múltiplos roteadores.
      

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#!/usr/bin/python
#-*-coding:iso-8859-1 -*-

#############################################################################################################
#############################################################################################################
###-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------###
###  Script: Conn.py                                                                                                                                                                                                               ###
###  Versão: 1.0     Data:08/05/2010                                                                                                                                                                                       ###
###  Autor: Rafael Iguatemy dos Santos - rafael.dsantos@bol.com.br                                                                                                                                          ###
###-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------###
### Este script testa a conexão de uma lista de ips, conecta via telnet todos os que estão disponíveis,                                                                                           ###
### aplica e salva em arquivos separados as configurações necessárias em nos roteadores                                                                                                          ###
#############################################################################################################
#############################################################################################################
import os
import telnetlib

def pingar(ips):
   ''' 
     Testar a Conectividade e separar os IPs que estão conectados
   '''
   ipok = []
   ipfora = []
   for ip in ips:
      ping = os.popen('ping -c 10 %s' % ip).read()
      print ping
      print 75*"-"
      if ('64 bytes from') in ping:
         ipok.append(ip)
      else:
         ipfora.append(ip)
   return ipok
   
def verifica_ip(ip):
   '''Verifica se o ip e valido e separa os octetos
   '''
   oct1,oct2,oct3,oct4 = "","","",""
      
   for i in range(len(ip)):
      if ip[i] != '.':
         oct1 += ip[i]
      else:
         ipr1 = ip[i+1:]
         break
   for j in range(len(ipr1)):
      if ipr1[j] != '.':
         oct2 += ipr1[j]
      else:
         ipr2 = ipr1[j+1:]
         break
   for w in range(len(ipr2)):
      if ipr2[w] != '.':
         oct3 += ipr2[w]
      else:
         oct4 = ipr2[w+1:]
         break
   if int(oct1) == 0 or int(oct1)>255 or int(oct2)>255 or int(oct3)>255 or int(oct1)>255 or len(ip)>15 or ip.count('.')!=3:
      print "ip incorreto"
   else:
      ips = oct1+'.'+oct2+'.'+oct3+'.'+oct4
      return ips



user = 'xxxxx'
password = '********'     
ip = ''
ips = []

# Quando o ip 1.0.0.0 for digitado, o looping da entrada de dados terminará
while ip != '1.0.0.0':
   ip = raw_input('Entre com IP / Digite 1.0.0.0 para sair')
   x = verifica_ip(ip)
   ips.append(x)
ips.remove('1.0.0.0')

ipsok = pingar(ips)
print ipsok
for HOST in ipsok:
   #Autenticação no roteador via Telnet
   tn = telnetlib.Telnet(HOST)
   tn.read_until("Username: ", 3)
   tn.write(user + "\r\n")
   tn.read_until("Password: ", 3)
   tn.write(password + "\r\n")
   
   #Comandos da IOS Cisco (Aqui que customizamos o script para qualquer configuração feita no roteador)
   tn.write("term length 0"+ "\r\n")
   tn.write("sh ip bgp sum" + "\r\n")
   tn.write("logout" + "\r\n")
   
   #
   str_all = tn.read_all()
   tn.close()
   try: # Teremos de saída 1 arquivo para cada roteador        
      arq = "arq_"+HOST+".txt"
      f = open(arq, "w")
      try:
         f.write(str_all)
      finally:
         f.close
   except IOError:
      pass
      

Consumo de memória por processo

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