• 《思科 - GNS3 - Pythonping》

    拓扑图：（参照Qos拓扑即可）

    实验准备：

    1. pythonping 为第三方模块，通过pip下载，VMware虚拟机：pip3.8 install pythonping；

    2.新建一个目录：mkdir  lab2，在该文件目录下创建实验的python脚本；

    3.在 lab2 目录vim 代码1.py

    结果：

    4.在lab2目录 vim 代码2.py

    代码1：

    1. from pythonping import ping
    2.  
    3. import os
    4.  
    5.  
    6. if os.path.exists('reachable_ip.txt'):
    7.  
    8.     os.remove('reachable_ip.txt')
    9.  
    10.  
    11. third_octet = range(1,3)                                 #IP地址第三网段
    12.  
    13. last_octet = range(11,14)                               #IP地址第四网段：例如：192.168.88.10
    14.  
    15.  
    16. for ip3 in third_octet:
    17.  
    18.     for ip4 in last_octet:
    19.  
    20.         ip ='192.168.' + str(ip3) + '.' + str(ip4)
    21.  
    22.         ping_result = ping(ip)
    23.  
    24.         f =open('reachable_ip.txt','a')
    25.  
    26.         if 'Reply' in str(ping_result):
    27.  
    28.             print(ip + '可达!')
    29.  
    30.             f.write(ip + '\n')
    31.  
    32.         else:
    33.  
    34.             print(ip + '不可达!')
    35.  
    36. f.close()

    代码2：

    1. import paramiko
    2.  
    3. import time
    4.  
    5. import re
    6.  
    7. from datetime import datetime
    8.  
    9. import socket
    10.  
    11. import getpass
    12.  
    13.  
    14. username = input('用户名:')
    15.  
    16. password = getpass.getpass('密码:')
    17.  
    18. now = datetime.now()
    19.  
    20. date = "%s-%s-%s" % (now.month,now.day,now.year)
    21.  
    22. time_now = "%s:%s:%s" % (now.hour,now.minute,now.second)
    23.  
    24.  
    25. switch_with_tacacs_issue = []
    26.  
    27. switch_not_reachable = []
    28.  
    29. total_number_of_up_port = 0
    30.  
    31.  
    32. iplist = open('reachable_ip.txt')
    33.  
    34. number_of_switch = len(iplist.readlines())
    35.  
    36. total_number_of_up_ports = number_of_switch * 1                                
    37.  
    38.   #此"1"为下行PC接口数
    39.  
    40.  
    41. iplist.seek(0)
    42.  
    43. for line in iplist.readlines():
    44.  
    45.     try:
    46.  
    47.         ip = line.strip()
    48.  
    49.         ssh_client = paramiko.SSHClient()
    50.  
    51.         ssh_client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    52.  
    53.         ssh_client.connect(hostname=ip,username=username,password=password)
    54.  
    55.         print("\n你已成功连接到" + ip)
    56.  
    57.         command = ssh_client.invoke_shell()
    58.  
    59.         command.send('term len 0\n')
    60.  
    61.         command.send('show ip int b | i up\n')
    62.  
    63.         time.sleep(1)
    64.  
    65.         output = command.recv(65535).decode()
    66.  
    67.         #print(output)
    68.  
    69.         search_up_port = re.findall(r'GigabitEthernet',output)
    70.  
    71.         number_of_up_port = len(search_up_port)
    72.  
    73.         print(ip + "有" + str(number_of_up_port) + "个up端口。")
    74.  
    75.         total_number_of_up_port += number_of_up_port
    76.  
    77.     except paramiko.ssh_exception.AuthenticationException:
    78.  
    79.         print(ip + "TACACS不可用" +  "!")
    80.  
    81.         switch_with_tacacs_issue.append(ip)
    82.  
    83.     except socket.error:
    84.  
    85.         print(ip + "不可达!")
    86.  
    87.         switch_not_reachable.append(ip)
    88.  
    89. iplist.close()
    90.  
    91.  
    92. print("\n")
    93.  
    94. print("网络中总共有" + str(total_number_of_up_ports) + "个可用端口。")
    95.  
    96. print("当前有" + str(total_number_of_up_port) + "个up端口。")
    97.  
    98. print("端口开启速度为%.2f%%" % (total_number_of_up_port / float(total_number_of_up_ports) * 100))
    99.  
    100. print('\n以下交换机TACACS不可用:')
    101.  
    102. for i in switch_with_tacacs_issue:
    103.  
    104.     print(i)
    105.  
    106. print('\n以下交换机不可达:')
    107.  
    108. for i in switch_not_reachable:
    109.  
    110.     print(i)
    111.  
    112. f = open(date + ".txt","a+")
    113.  
    114. f.write('自' + date + " " + "的" + time_now)
    115.  
    116. f.write("\n\n网络中总共有" +str(total_number_of_up_ports) + "个可用端口。")
    117.  
    118. f.write("\n当前有" + str(total_number_of_up_port) + "个up端口。")
    119.  
    120. f.write("\n端口开启速度为%.2f%%" % (total_number_of_up_port / float(total_number_of_up_ports) * 100))
    121.  
    122. f.write("\n************************************************************\n\n")
    123.  
    124. f.close()

    IP、路由、SSH 配置：

    VM虚拟机路由配置：

    route add -net 0.0.0.0 netmask 0.0.0.0 gw 192.168.88.10

    ——————————————————————————

    1. sw1:
    2.  
    3. en
    4.  
    5. conf t
    6.  
    7. host sw1
    8.  
    9. ip routing
    10.  
    11. int g0/0
    12.  
    13. no sw
    14.  
    15. ip add 192.168.88.10 255.255.255.0
    16.  
    17. no shut
    18.  
    19. int g0/1
    20.  
    21. no sw
    22.  
    23. ip add 192.168.1.10 255.255.255.0
    24.  
    25. no shu
    26.  
    27. int g0/2
    28.  
    29. no sw
    30.  
    31. ip add 192.168.2.10 255.255.255.0
    32.  
    33. no shut
    34.  
    35. ip domain-name cisco.com
    36.  
    37. crypto key generate rsa
    38.  
    39. 1024
    40.  
    41. username python privilege 15 password 123
    42.  
    43. enable password 123
    44.  
    45. ip ssh time-out 120
    46.  
    47. ip ssh authentication-retries 5
    48.  
    49. ip ssh version 2
    50.  
    51. line vty 0 4
    52.  
    53. transport input all
    54.  
    55. login local
    56.  
    57. end
    58.  
    59. write
    60.  
    61.  
    62.  
    63. pc1:
    64.  
    65. en
    66.  
    67. conf t
    68.  
    69. host pc1
    70.  
    71. ip routing
    72.  
    73. ip route 0.0.0.0 0.0.0.0 192.168.1.10
    74.  
    75. int g0/0
    76.  
    77. no sw
    78.  
    79. ip add 192.168.1.11 255.255.255.0
    80.  
    81. ip domain-name cisco.com
    82.  
    83. crypto key generate rsa
    84.  
    85. 1024
    86.  
    87. username python privilege 15 password 123
    88.  
    89. enable password 123
    90.  
    91. ip ssh time-out 120
    92.  
    93. ip ssh authentication-retries 5
    94.  
    95. ip ssh version 2
    96.  
    97. line vty 0 4
    98.  
    99. transport input all
    100.  
    101. login local
    102.  
    103. end
    104.  
    105. write
    106.  
    107.  
    108.  
    109. pc2:
    110.  
    111. en
    112.  
    113. conf t
    114.  
    115. host pc2
    116.  
    117. ip routing
    118.  
    119. ip route 0.0.0.0 0.0.0.0 192.168.1.10
    120.  
    121. int g0/0
    122.  
    123. no sw
    124.  
    125. ip add 192.168.1.12 255.255.255.0
    126.  
    127. ip domain-name cisco.com
    128.  
    129. crypto key generate rsa
    130.  
    131. 1024
    132.  
    133. username python privilege 15 password 123
    134.  
    135. enable password 123
    136.  
    137. ip ssh time-out 120
    138.  
    139. ip ssh authentication-retries 5
    140.  
    141. ip ssh version 2
    142.  
    143. line vty 0 4
    144.  
    145. transport input all
    146.  
    147. login local
    148.  
    149. end
    150.  
    151. write
    152.  
    153.  
    154.  
    155. pc3:
    156.  
    157. en
    158.  
    159. conf t
    160.  
    161. host pc3
    162.  
    163. ip routing
    164.  
    165. ip route 0.0.0.0 0.0.0.0 192.168.1.10
    166.  
    167. int g0/0
    168.  
    169. no sw
    170.  
    171. ip add 192.168.1.13 255.255.255.0
    172.  
    173. ip domain-name cisco.com
    174.  
    175. crypto key generate rsa
    176.  
    177. 1024
    178.  
    179. username python privilege 15 password 123
    180.  
    181. enable password 123
    182.  
    183. ip ssh time-out 120
    184.  
    185. ip ssh authentication-retries 5
    186.  
    187. ip ssh version 2
    188.  
    189. line vty 0 4
    190.  
    191. transport input all
    192.  
    193. login local
    194.  
    195. end
    196.  
    197. write
    198.  
    199.  
    200.  
    201. pc4:
    202.  
    203. en
    204.  
    205. conf t
    206.  
    207. host pc4
    208.  
    209. ip routing
    210.  
    211. ip route 0.0.0.0 0.0.0.0 192.168.2.10
    212.  
    213. int g0/0
    214.  
    215. no sw
    216.  
    217. ip add 192.168.2.11 255.255.255.0
    218.  
    219. ip domain-name cisco.com
    220.  
    221. crypto key generate rsa
    222.  
    223. 1024
    224.  
    225. username python privilege 15 password 123
    226.  
    227. enable password 123
    228.  
    229. ip ssh time-out 120
    230.  
    231. ip ssh authentication-retries 5
    232.  
    233. ip ssh version 2
    234.  
    235. line vty 0 4
    236.  
    237. transport input all
    238.  
    239. login local
    240.  
    241. end
    242.  
    243. write
    244.  
    245.  
    246.  
    247. pc5:
    248.  
    249. en
    250.  
    251. conf t
    252.  
    253. host pc5
    254.  
    255. ip routing
    256.  
    257. ip route 0.0.0.0 0.0.0.0 192.168.2.10
    258.  
    259. int g0/0
    260.  
    261. no sw
    262.  
    263. ip add 192.168.2.12 255.255.255.0
    264.  
    265. ip domain-name cisco.com
    266.  
    267. crypto key generate rsa
    268.  
    269. 1024
    270.  
    271. username python privilege 15 password 123
    272.  
    273. enable password 123
    274.  
    275. ip ssh time-out 120
    276.  
    277. ip ssh authentication-retries 5
    278.  
    279. ip ssh version 2
    280.  
    281. line vty 0 4
    282.  
    283. transport input all
    284.  
    285. login local
    286.  
    287. end
    288.  
    289. write
    290.  
    291.  
    292.  
    293. pc6:
    294.  
    295. en
    296.  
    297. conf t
    298.  
    299. host pc6
    300.  
    301. ip routing
    302.  
    303. ip route 0.0.0.0 0.0.0.0 192.168.2.10
    304.  
    305. int g0/0
    306.  
    307. no sw
    308.  
    309. ip add 192.168.2.13 255.255.255.0
    310.  
    311. ip domain-name cisco.com
    312.  
    313. crypto key generate rsa
    314.  
    315. 1024
    316.  
    317. username python privilege 15 password 123
    318.  
    319. enable password 123
    320.  
    321. ip ssh time-out 120
    322.  
    323. ip ssh authentication-retries 5
    324.  
    325. ip ssh version 2
    326.  
    327. line vty 0 4
    328.  
    329. transport input all
    330.  
    331. login local
    332.  
    333. end
    334.  
    335. write

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  • 原文地址：https://blog.csdn.net/weixin_57099902/article/details/127552234