cisco traceroute的python脚本-看不到整个跳数

Question

尝试运行python traceroute脚本跟踪在5-7跳之后卡住(而不是应该的30跳)。附上我的脚本

#!/usr/bin/env python

from netmiko import ConnectHandler
from auto_encrypter_new import *

ios = {
        'device_type': 'cisco_ios',
        'ip': 'my_ip_device',
        'username': user_encrypt,
        'password': passwd_encrypt,
}

net_connect = ConnectHandler(**ios)
output = net_connect.send_command_timing('trace dest_ip')
print (output)

只有6跳，而通过我们的路由器这样做，我得到了更多的跳数，有什么建议吗？

谢谢

Answer 1

这可能是由于超时问题造成的。尝试：

output = net_connect.send_command_timing(f'trace {dest_ip}', delay_factor=4)

here解释了延迟因素

如果它仍然不起作用，请尝试：

import time
from netmiko import ConnectHandler
from auto_encrypter_new import *

ios = {
        'device_type': 'cisco_ios',
        'ip': 'my_ip_device',
        'username': user_encrypt,
        'password': passwd_encrypt,
}

net_connect = ConnectHandler(**ios)
dest_ip = '8.8.8.8'


net_connect.write_channel(f'trace {dest_ip}')
time.sleep(10) # this is needed for the device to send a response. Test it and try to adjust timing if needed
output = net_connect.read_channel()
print(output)