global_cmd_verify needs disabled on cisco_ios if terminal width command fails

I have a telnet session with limited command access. It appears the ‘terminal width 511’ is failing due to command authorization and the ConnectHandler() call returns None.

Is there a way to avoid this behavior/startup sequence? I may not be able to have access to the terminal commands in this environment.

net_connect = ConnectHandler(device_type=device_type,
                                    host=dev['ip_address'],
                                    username=credentials['username'],
                                    password=credentials['password'],
                                    secret=credentials['secret'],
                                    port=3001,
                                    timeout=timeout_value)

Timed-out reading channel, pattern not found in output: terminal\ length\ 0
Traceback (most recent call last):
  File "xxxxxxxx_sh_ip_route.py", line 65, in <module>
    update(xxxxxx)
  File "xxxxxxxxxx_sh_ip_route.py", line 48, in update
    if not dev['conn'].is_alive():
AttributeError: 'NoneType' object has no attribute 'is_alive'

Username: 
DEBUG:netmiko:write_channel: b'xxxxxxxxx\r'
DEBUG:netmiko:read_channel: xxxxxxxxx
Password: 
DEBUG:netmiko:write_channel: b'xxxxxxxxx\r'
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:write_channel: b'\r\n'
DEBUG:netmiko:read_channel: 
C
xxxxxxxxxxxxxxxxxx 

xxxxxxx#
xxxxxxx#
DEBUG:netmiko:write_channel: b'terminal width 511\r\n'
DEBUG:netmiko:Pattern is: terminal width 511
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: termi
DEBUG:netmiko:read_channel: nal wi
DEBUG:netmiko:read_channel: dth 51
DEBUG:netmiko:read_channel: 1

DEBUG:netmiko:Pattern found: terminal width 511 terminal width 511

DEBUG:netmiko:In disable_paging
DEBUG:netmiko:Command: terminal length 0

DEBUG:netmiko:write_channel: b'terminal length 0\r\n'
DEBUG:netmiko:Pattern is: terminal\ length\ 0
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: Command authorization failed.

xxxxxxxx#te
DEBUG:netmiko:write_channel: b'\r\n'
DEBUG:netmiko:read_channel: rminal length 0

DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: xxxxxxxxx#
xxxxxxxxx#
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:write_channel: b'exit\r\n'
DEBUG:netmiko:read_channel: CC

[Suterusu1337]

global_cmd_verify = False

This worked. Also to note, the router was taking terminal length 0 just fine, it was not failing on that part per say, but netmiko was stating not found even though it was the terminal width 511 that was actually having the problem. I had the ability to run terminal length 0 without any AAA issues from the router (when tested manually).

[ktbyers]

Try setting the following argument in your ConnectHandler call

global_cmd_verify = False

Let me know if that fixes your issue.

Note, you are likely going to have significant issues if you cannot disable output paging i.e. execute terminal length 0