Python Netmiko timesout（尽管延迟系数=4）-操作错误：在发送命令中从未检测到搜索模式

这是我大得多的程序的一部分，但我已将错误隔离到这个简短的示例中：

我正在Cisco IOS XE设备上运行ping命令，ping需要一段时间才能完成。因此，为了避免不必要的超时，我为

netmiko.ConnectHandler.send\u command（）

但是，我仍然得到错误：

[somsinha@cisco-cms.com@unlv1lnxjmpa01 pack_tests]$ time ./wo_thread.py 
Running Command: ping 1.1.1.1 so lo0 r 350 si 1400 df on R1
Traceback (most recent call last):
  File "./wo_thread.py", line 52, in <module>
    exec_cmd(v, 'ping 1.1.1.1 so lo0 r 350 si 1400 df')
  File "./wo_thread.py", line 30, in exec_cmd
    res += net_connect.send_command(cmd, delay_factor=5)
  File "/home/somsinha@cisco-cms.com/pyScripts/dev/devEnv/lib/python3.7/site-packages/netmiko/utilities.py", line 363, in wrapper_decorator
    return func(self, *args, **kwargs)
  File "/home/somsinha@cisco-cms.com/pyScripts/dev/devEnv/lib/python3.7/site-packages/netmiko/base_connection.py", line 1488, in send_command
    search_pattern
OSError: Search pattern never detected in send_command_expect: R1#

real    0m23.647s
user    0m0.582s
sys     0m0.127s

正如您在上面所看到的，开始和结束时间的实际差异是

~24秒

——因此没有理由不起作用。知道怎么回事吗，伙计们

我的代码是：

#!/usr/bin/python3
import os, sys
from netmiko import ConnectHandler
from pprint import pprint
from datetime import datetime, timedelta


dev = {
    "device_type": "cisco_xe",
    "host": '9.9.9.9',
    "username": 'user',
    "password": 'pass',
}


def exec_cmd(out, cmd):
    with ConnectHandler(**dev) as net_connect:
        if type(cmd) != list:
            d_name = net_connect.find_prompt()
            res = d_name + cmd + '\n'
            print(f"Running Command: {cmd} on {d_name.replace('#', '')}", end='', flush=True)
            res += net_connect.send_command(cmd, delay_factor=5)
            out.append(res)
            print('\x1b[2K\r', end = '') # Clear the old 'Running ...' Line
            print(f"Obtained result for {cmd}")
        else:
            out_lst = []
            for c in cmd:
                exec_cmd(out_lst, c)
            out.append(out_lst)


v = []
exec_cmd(v, 'ping 130.24.4.4 so lo0 r 350 si 1400 df')
print(v)
exit(1)

---

这可能是一个bug

见：

修正： 在设备配置中添加

“fast\u cli”：False

。完整代码：

dev = {
    "device_type": "cisco_xe",
    "host": '9.9.9.9',
    "username": 'user',
    "password": 'pass',
    "fast_cli": False,
}

dev = {
    "device_type": "cisco_xe",
    "host": '9.9.9.9',
    "username": 'user',
    "password": 'pass',
    "fast_cli": False,
}