Nexans ANS Switch Example (Using generic device with different default_enter and no config_mode)

[pixeldoc2000]

These are working Examples for Nexans ANS Switch OS v8.

Tested with NetMiko 4.6.0 and Python 3.13 (Debian 13 on WSL)

Device

• Nexans (Aginode) iGigaSwitch 1002 E+ with Firmware hw5-f46-p10-industrial-v8.00M (Industrial)

Send Command Example

#!/usr/bin/env python
from netmiko import ConnectHandler
from getpass import getpass

my_device = {
    "device_type": "generic",
    "host": "NEXANS-00C02926AABB",
    "username": "admin",
    "password": getpass(),
    "default_enter": "\r\n",   # Nexans ANS need different Line termination
}

#command = "show info"
command = "show config sntp"

with ConnectHandler(**my_device) as net_connect:
   output = net_connect.send_command(command)

# Automatically cleans-up the output so that only the show output is returned
print()
print(output)
print()

Send Config from File Example

#!/usr/bin/env python
from netmiko import ConnectHandler
from getpass import getpass

my_device = {
    "device_type": "generic",
    "host": "NEXANS-00C02926AABB",
    "username": "admin",
    "password": getpass(),
    "default_enter": "\r\n",   # Nexans ANS need different Line termination
}

cfg_file = "config_changes.txt"
with ConnectHandler(**my_device) as net_connect:
    # Nexans ANS has no enter / exit config command
    output = net_connect.send_config_from_file(cfg_file, enter_config_mode=False, exit_config_mode=False)
    # Nexans ANS has no save config command

print()
print(output)
print()

Debug Log

Show Command

DEBUG:paramiko.transport:starting thread (client mode): 0x87dc34d0
DEBUG:paramiko.transport:Local version/idstring: SSH-2.0-paramiko_4.0.0
DEBUG:paramiko.transport:EOF in transport thread
DEBUG:paramiko.transport:Remote version/idstring: SSH-2.0-ANS
INFO:paramiko.transport:Connected (version 2.0, client ANS)
DEBUG:paramiko.transport:=== Key exchange possibilities ===
DEBUG:paramiko.transport:kex algos: ecdh-sha2-nistp256, ecdh-sha2-nistp384, ecdh-sha2-nistp521, diffie-hellman-group16-sha512, diffie-hellman-group18-sha512
DEBUG:paramiko.transport:server key: ecdsa-sha2-nistp256, rsa-sha2-512, rsa-sha2-256
DEBUG:paramiko.transport:client encrypt: chacha20-poly1305@openssh.com, aes256-ctr, aes128-ctr, 
DEBUG:paramiko.transport:server encrypt: chacha20-poly1305@openssh.com, aes256-ctr, aes128-ctr, 
DEBUG:paramiko.transport:client mac: hmac-sha2-256, hmac-sha2-512
DEBUG:paramiko.transport:server mac: hmac-sha2-256, hmac-sha2-512
DEBUG:paramiko.transport:client compress: none
DEBUG:paramiko.transport:server compress: none
DEBUG:paramiko.transport:client lang: <none>
DEBUG:paramiko.transport:server lang: <none>
DEBUG:paramiko.transport:kex follows: False
DEBUG:paramiko.transport:=== Key exchange agreements ===
DEBUG:paramiko.transport:Kex: ecdh-sha2-nistp256
DEBUG:paramiko.transport:HostKey: ecdsa-sha2-nistp256
DEBUG:paramiko.transport:Cipher: aes128-ctr
DEBUG:paramiko.transport:MAC: hmac-sha2-256
DEBUG:paramiko.transport:Compression: none
DEBUG:paramiko.transport:=== End of kex handshake ===
DEBUG:paramiko.transport:kex engine KexNistp256 specified hash_algo <built-in function openssl_sha256>
DEBUG:paramiko.transport:Switch to new keys ...
DEBUG:paramiko.transport:Adding ecdsa-sha2-nistp256 host key for NEXANS-00C02926AABB: b'09c28ca88bfd8ce820730a206fxxxxxx'
DEBUG:paramiko.transport:Got EXT_INFO: {'server-sig-algs': b'ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,rsa-sha2-512,rsa-sha2-256,ssh-dss'}
DEBUG:paramiko.transport:userauth is OK
INFO:paramiko.transport:Authentication (password) successful!
DEBUG:paramiko.transport:[chan 0] Max packet in: 32768 bytes
DEBUG:paramiko.transport:[chan 0] Max packet out: 35000 bytes
DEBUG:paramiko.transport:Secsh channel 0 opened.
DEBUG:paramiko.transport:[chan 0] Sesch channel 0 request ok
DEBUG:paramiko.transport:[chan 0] Sesch channel 0 request ok
DEBUG:netmiko:write_channel: b'\r\n'
DEBUG:netmiko:read_channel: 

Enter command '?' or 'help [key-word] [key-word]' to search commands.
Examples:
 ?                   - Lists short description of all commands
 help                - Lists long description of all commands
 help vlan           - Lists only commands with keyword vlan
 help vlan interface - Lists only commands with keyword vlan and interface

NEXANS-00C02926AABB#
NEXANS-00C02926AABB#
DEBUG:netmiko:Clear buffer detects data in the channel
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:write_channel: b'\r\n'
DEBUG:netmiko:read_channel: 
NEXANS-00C02926AABB#
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:[find_prompt()]: prompt is NEXANS-00C02926AABB#
DEBUG:netmiko:write_channel: b'show config sntp\r\n'
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: 
DEBUG:netmiko:read_channel: show config sntp

!--< TIME CLIENT >-------------------------------------------------------
sntp server-ip 0.0.0.0
 
NEXANS-00C02926AABB#
DEBUG:netmiko:Pattern found: (show\ config\ sntp) show config sntp
DEBUG:netmiko:read_channel: 

Send Config

DEBUG:paramiko.transport:starting thread (client mode): 0x3e955400
DEBUG:paramiko.transport:Local version/idstring: SSH-2.0-paramiko_4.0.0
DEBUG:paramiko.transport:Remote version/idstring: SSH-2.0-ANS
INFO:paramiko.transport:Connected (version 2.0, client ANS)
DEBUG:paramiko.transport:=== Key exchange possibilities ===
DEBUG:paramiko.transport:kex algos: ecdh-sha2-nistp256, ecdh-sha2-nistp384, ecdh-sha2-nistp521, diffie-hellman-group16-sha512, diffie-hellman-group18-sha512
DEBUG:paramiko.transport:server key: ecdsa-sha2-nistp256, rsa-sha2-512, rsa-sha2-256
DEBUG:paramiko.transport:client encrypt: chacha20-poly1305@openssh.com, aes256-ctr, aes128-ctr, 
DEBUG:paramiko.transport:server encrypt: chacha20-poly1305@openssh.com, aes256-ctr, aes128-ctr, 
DEBUG:paramiko.transport:client mac: hmac-sha2-256, hmac-sha2-512
DEBUG:paramiko.transport:server mac: hmac-sha2-256, hmac-sha2-512
DEBUG:paramiko.transport:client compress: none
DEBUG:paramiko.transport:server compress: none
DEBUG:paramiko.transport:client lang: <none>
DEBUG:paramiko.transport:server lang: <none>
DEBUG:paramiko.transport:kex follows: False
DEBUG:paramiko.transport:=== Key exchange agreements ===
DEBUG:paramiko.transport:Kex: ecdh-sha2-nistp256
DEBUG:paramiko.transport:HostKey: ecdsa-sha2-nistp256
DEBUG:paramiko.transport:Cipher: aes128-ctr
DEBUG:paramiko.transport:MAC: hmac-sha2-256
DEBUG:paramiko.transport:Compression: none
DEBUG:paramiko.transport:=== End of kex handshake ===
DEBUG:paramiko.transport:kex engine KexNistp256 specified hash_algo <built-in function openssl_sha256>
DEBUG:paramiko.transport:Switch to new keys ...
DEBUG:paramiko.transport:Got EXT_INFO: {'server-sig-algs': b'ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,rsa-sha2-512,rsa-sha2-256,ssh-dss'}
DEBUG:paramiko.transport:Adding ecdsa-sha2-nistp256 host key for NEXANS-00C02926AABB: b'09d03c6050ab7adf17895xxxxxxxxxxx'
DEBUG:paramiko.transport:userauth is OK
INFO:paramiko.transport:Authentication (password) successful!
DEBUG:paramiko.transport:[chan 0] Max packet in: 32768 bytes
DEBUG:paramiko.transport:[chan 0] Max packet out: 35000 bytes
DEBUG:paramiko.transport:Secsh channel 0 opened.
DEBUG:paramiko.transport:[chan 0] Sesch channel 0 request ok
DEBUG:paramiko.transport:[chan 0] Sesch channel 0 request ok
DEBUG:netmiko:write_channel: b'\r\n'
DEBUG:netmiko:write_channel: b'sntp mode disable\r\n'
DEBUG:netmiko:read_channel: 

Enter command '?' or 'help [key-word] [key-word]' to search commands.
Examples:
 ?                   - Lists short description of all commands
 help                - Lists long description of all commands
 help vlan           - Lists only commands with keyword vlan
 help vlan interface - Lists only commands with keyword vlan and interface

NEXANS-00C02926AABB#
NEXANS-00C02926AABB#
DEBUG:netmiko:read_channel: sntp mode disable

NEXANS-00C02926AABB#
DEBUG:netmiko:Pattern found: (sntp\ mode\ disable) 

Enter command '?' or 'help [key-word] [key-word]' to search commands.
Examples:
 ?                   - Lists short description of all commands
 help                - Lists long description of all commands
 help vlan           - Lists only commands with keyword vlan
 help vlan interface - Lists only commands with keyword vlan and interface

NEXANS-00C02926AABB#

[ktbyers]

Typically, the process would be to create a nexans specific driver for this in Netmiko.

Was there some other question or discussion point here?

[pixeldoc2000]

No, I posted this because it works without a custom driver using the following:

• "default_enter": "\r\n"
• net_connect.send_config_from_file(cfg_file, enter_config_mode=False, exit_config_mode=False)

I just want to share this with the community.

I did stuggle for some time to understand how to modify the default behavior to make it happen ;-)