ValueError：Failed to exit configuration mode

HI dear ktbyers: I have an issue about the netmiko, my code is:

from netmiko import ConnectHandler
import netmiko
import getpass
import socket


username = input('Enter your SSH/Telnet username: ')
password_now = getpass.getpass('Enter your SSH/Telnet password now: ') 
password = getpass.getpass('Enter your new password: ')

cisco_3560_18 = {
                    'device_type':'cisco_ios',
                    'ip':'XXXXXXX',
                    'username':username,
                    'password':password_now
                    }

cisco_3560_19 = {
                    'device_type':'cisco_ios',
                    'ip':'1XXXXXXX9',
                    'username':username,
                    'password':password_now
                    }
devices_cisco = [cisco_3560_18,cisco_3560_19]
for device in devices_cisco:
    try:
        connect = ConnectHandler(**device)
        print('Successfully connected to ' + device['ip'])
        
        config_commands ='username admin secret 12345'
        #connect.send_command('conf t')
        output = connect.send_config_set(config_commands)
        print(output)
    except netmiko.ssh_exception.NetMikoTimeoutException:
        print(device['ip' + 'is not reachable.'])
    except netmiko.ssh_exception.NetmikoAuthenticationException:
        print('username or password incorrect')

and there is an error is :ValueError：Failed to exit configuration mode (output = connect.send_config_set(config_commands))

and i follow your reply for other issue add the ‘exit_config_mode=False’ and ‘delay_factor=4’ there will be another error: username admin secret 12345 ^ %invalid input detected at ‘^’ marker. XXXXX#

this two swtiches is cisco WS-C3560-24TS, and ios is :C3560-IPSERVICESK9-M

and i use netmiko.send_command to show information can works.

[Mic0623]

Adding the parenthesis breaks how Netmiko checks for whether we are in config-mode or not:

https://github.com/ktbyers/netmiko/blob/netmiko4_exp/netmiko/cisco/cisco_ios.py#L26

You can see this argument:

check_string=")#"

So trailing parenthesis and a pound sign is the indicator we are using for determining configuration mode.

Unfortunately, in this case you would have to change the hostname to get Netmiko to work properly…

Regards, Kirk

Thank you！Kirk，when i change the hostname of the device, the problem is solved. Thank you very much!

[ktbyers]

@Mic0623 Yeah, sorry you ran into this…unfortunately, certain string patterns for determining device state (config mode, enable mode, et cetera) are necessary.