IOS upgrade for Cisco IE-3400

Hello,

I am testing netmiko for ios upgrade automation. I wanted to try the script so I can understand it.

The device is a Cisco IE-3400 running IOS-XE. I have tried both cisco_ios and cisco_xe but the end result is the same.

The script in question:

https://github.com/ktbyers/netmiko/blob/develop/EXAMPLES.md#adjusting-delay_factor

from netmiko import ConnectHandler
from getpass import getpass
from datetime import datetime

Traffic_IP = [
	"10.199.0.38",
	]

username = input("USERNAME: ")	
cisco1 = {
"host": Traffic_IP[0],
"username": username,
"device_type": "cisco_ios",
"password": getpass(),
}

command = "copy sftp://SFTPBackup1:kODpYI0Jr)Z8YF5@172.26.3.62/images/IOS/IE/ie3x00-universalk9.17.03.04.SPA.bin flash:/ie3x00-universalk9.17.03.04.SPA.bin"
# Start clock
start_time = datetime.now()

net_connect = ConnectHandler(**cisco1)

# Netmiko normally allows 100 seconds for send_command to complete
# delay_factor=4 would allow 400 seconds.

output = net_connect.send_command_timing(
    command, strip_prompt=False, strip_command=False, delay_factor=7
)
# Router prompted in this example:
# -------
# cisco1
#copy flash:c880data-universalk9-mz.155-3.M8.bin flash:test1.bin# Destination filename [test1.bin]? 
# Copy in progress...CCCCCCC
# -------

if "Destination filename" in output:
    print("Starting copy...")
    output += net_connect.send_command("\n", delay_factor=7, expect_string=r"!")
    net_connect.disconnect()

end_time = datetime.now()
print(f"\n{output}\n")
print("done")
print(f"Execution time: {start_time - end_time}")

The script works as expected, however it finishes without actually copying the image over.

I am wondering what is causing the script to complete but not actually copy over.

Help is greatly appreciated.

Nick

[ktbyers]

For this type of operation, I would use send_command and not send_command_timing:

output = net_connect.send_command(
    command, strip_prompt=False, strip_command=False
)

Also probably should set fast_cli=False as an argument to ConnectHandler.

How long does the transfer normally take i.e. what is the expected execution time?

[ktbyers]

Yeah, this should all be greatly simplified in the next release of Netmiko, but basically you needed to set fast_cli=False so that things get set back to 100 seconds and so that delay_factor works as you would expect (i.e. * 7 = wait for 700 seconds).