Cisco SG300 series breaking on SSH connection

Hello @ktbyers

Thanks for the amazing open source project that NetMiko is. 👍

I would like to get some help on the following issue:

I have a very simple script trying to copy the config of a Cisco SG300 device. My code (I have verbose enabled on Netmiko):

if Device_Model_List[i] == "Cisco":

            #create profile for Juniper for NetMiko
            provision_router_object = {
            'device_type': 'cisco_ios',
            'ip': Public_IP_List[i],
            'username': User_List[i], 
            'password': Password_List[i],
            'port': SSH_Port_List[i],
            'global_delay_factor': 1,
            'verbose': true,
            }

            print(provision_router_object)
            provision_router = ConnectHandler(**provision_router_object)    
            output = provision_router.send_command("show running-config")
            file_name = Name_List[i] + '-' + str(date)
            path = "/Users/sam/Documents/Backup_Router/" + Customer_List[i] + "/" + Customer_Site[i] + "/"
            print(path)
            os.makedirs(os.path.dirname(path), exist_ok=True)

            with open(os.path.join(path,file_name),"w") as file_:
                file_.write(output)   

And here’s the verbose + error I am getting:

SSH connection established to 184.68.129.6:2210
Interactive SSH session established

Traceback (most recent call last):
  File "/usr/local/lib/python3.5/site-packages/paramiko/channel.py", line 613, in recv
    out = self.in_buffer.read(nbytes, self.timeout)
  File "/usr/local/lib/python3.5/site-packages/paramiko/buffered_pipe.py", line 160, in read
    raise PipeTimeout()
paramiko.buffered_pipe.PipeTimeout

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.5/site-packages/netmiko/base_connection.py", line 387, in read_until_pattern
    output += self.remote_conn.recv(MAX_BUFFER).decode('utf-8', 'ignore')
  File "/usr/local/lib/python3.5/site-packages/paramiko/channel.py", line 615, in recv
    raise socket.timeout()
socket.timeout

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/sam/Documents/git/OPS/ops/python/router_backup/Backup_Test.py", line 56, in <module>
    provision_router = ConnectHandler(**provision_router_object)  
  File "/usr/local/lib/python3.5/site-packages/netmiko/ssh_dispatcher.py", line 84, in ConnectHandler
    return ConnectionClass(*args, **kwargs)
  File "/usr/local/lib/python3.5/site-packages/netmiko/base_connection.py", line 69, in __init__
    self.session_preparation()
  File "/usr/local/lib/python3.5/site-packages/netmiko/base_connection.py", line 83, in session_preparation
    self.disable_paging()
  File "/usr/local/lib/python3.5/site-packages/netmiko/base_connection.py", line 212, in disable_paging
    output = self.read_until_prompt()
  File "/usr/local/lib/python3.5/site-packages/netmiko/base_connection.py", line 374, in read_until_prompt
    return self.read_until_pattern()
  File "/usr/local/lib/python3.5/site-packages/netmiko/base_connection.py", line 393, in read_until_pattern
    raise NetMikoTimeoutException("Timed-out reading channel, data not available.")
netmiko.ssh_exception.NetMikoTimeoutException: Timed-out reading channel, data not available.

I’m running the latest version of Netmiko and Paramiko. It is working perfect with Juniper devices.

UPDATE: I have tried my script using a truly Cisco IOS device line and it works with no problem. So I believe the issue is the compatibility with the Cisco SG line. I have also tried to make Paramiko works with this Cisco SG device but it hangs on the connection and never times out. Hope this info will help.

Would you have any idea on whaw to try next?

Thank you so much.

Sam.

[ktbyers]

@samulord Initial work on driver for SG300 is here:

https://github.com/ktbyers/netmiko/commit/c28db41981c3e5b6b2cceec034041d307ad4e573

[ktbyers]

Will try to get to this in dev_1_0 release (i.e. add support for SG300)