Python进行交换机信息抓取

最新推荐文章于 2025-07-06 14:32:56 发布

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本文介绍了一种使用Python的telnetlib模块远程登录交换机，执行命令获取ARP信息，并将这些信息解析后存储到CSV文件的方法。通过定时任务，可以实现对网络设备ARP表项的定期监控与记录。

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需求：登录交换机下指令对回传信息进行抓取写入 CSV文件

#encoding=utf-8

import telnetlib
import re
import datetime,os


def do_telnet(HOST,USERNAME,PASSWORD):
    tn = telnetlib.Telnet(HOST, port=23, timeout=10)
    tn.set_debuglevel(2)
    tn.read_until('Username:')
    tn.write(USERNAME+'\n')

    tn.read_until('Password:')
    tn.write(PASSWORD+'\n')
    tn.read_until("F3-3850-TEST>")
    tn.write('enable'+'\n')
    tn.read_until('Password:')
    tn.write(PASSWORD+'\n')
    tn.read_until("F3-3850-TEST#")
    global msg
    msg = ''

    space_time = 0
    for i in range(3, 13):
        tn.write("show ip arp vlan %d" %i + '\n')
        while space_time <= 5:
            tn.write(' ')
            space_time = space_time+1
        space_time = 0
        tn.write('\n')

    tn.write("quit\n")
    msg = tn.read_until("F3-3850-TEST#quit\n")

    



def deal_and_uplog():
    #path1 = '\\\\172.24.255.126\\log\\STATIONINFO\\MP\\11\\11\\ON_LINE\\PASS\\%s\\IPINFO %s.csv'%(datatime.datetime.now().strftime('Y%m%d'),datatime.datetime.now().strftime('Y%m%d%H%I%M%S'))
    path1= '\\\\172.24.255.126\\log\\IPINFO'
    
    try:
        os.makedirs(path1)
    except:
        pass
    path = '%s\\IPINFO_%s.csv'%(path1,datetime.datetime.now().strftime('%Y%m%d_%H%M%S'))
    road = path
    with open(path,'w') as f:
        patt1 = "Protocol,Address,Age (min),Hardware Addr,Type,Interface\n"
        f.write(patt1)
    patt = r'(\w+)\s+(\d+\.\d+\.\d+\.\d+)\s+(\d+)\s+([a-z0-9]*\.[a-z0-9]*\.[a-z0-9]*)\s+([A-Z]*)\s+(.+)'
    with open(path, 'a+') as f:
        m = re.findall(patt,msg)
        if m is not None:
            for i in m:
                patt2 = i[0] + ',' + i[1] + ',' + i[2] + ',' + i[3] + ',' + i[4] + ',' + i[5]
                f.write(patt2)




if __name__ == "__main__":
    HOST = "192.168.xxx.xxx"
    USERNAME = 'xxx'
    PASSWORD = 'xxx'

    do_telnet(HOST,USERNAME,PASSWORD)
    deal_and_uplog()