Output of show tech-support on Cisco devices

Hello @ktbyers,

I was wondering what is the right way of getting show tech-support command output from multiple Cisco devices. This output takes from 20-30 minutes depending on many factors (Number of switches in a stack, IOS version, etc.). There is no room for tries as you cannot stop the output. CTRL+C/CTRL+Z/CTRL+SHIFT+6 has no effect on stopping the output from being displayed.

My Code is:

#!usr/bin python3

from netmiko import ConnectHandler

ipaddrs = ["", "", "", "", ""]

devices = []
for ip in ipaddrs:
    devices.append(
        {
            "device_type": "cisco_ios_telnet",
            "ip": ip,
            "username": "cisco",
            "password": "cisco",
            "fast_cli": False,
            "conn_timeout": 15,
            "session_log": f"{ip}-session.log",
        }
    )

for device in devices:
    with ConnectHandler(**device) as net_connect:
        print(f'Connected to {device["ip"]}')
        hostname = net_connect.send_command("show version", use_textfsm=True)[0][
            "hostname"
        ]
        tech_support = net_connect.send_command("show tech-support", delay_factor=20)

    with open(f"{hostname}.txt", "w") as outfile:
        outfile.write(tech_support.lstrip())

    print(f'tech support of {device["ip"]} is saved successfully to {hostname}.txt')

print("Done")

Do you think this code will work in normal conditions: The devices are up and running and there are no issues in connecting to the devices?

My actual code has a try/except block for catching errors.

[Tes3awy]

Yes, it is fixed in 4.x

Thank you Osama Abbas

[ktbyers]

I think this issue is probably fixed in Netmiko version 4.X using the read_timeout argument.

https://pynet.twb-tech.com/blog/netmiko-read-timeout.html