Dell os10 switch fails ssh autodetect

Hi–I’m seeing an issue with SSHDetect.autodetect() on a few dell os10 switches.

Example code:

from netmiko import SSHDetect, ConnectHandler
from getpass import getpass

device = {
    "device_type": "autodetect",
    "host": "switch_ip",
    "username": "admin",
    "password": getpass(),
}

guesser = SSHDetect(**device)
best_match = guesser.autodetect()
print(best_match)  # Name of the best device_type to use further

If switch_ip is an os9 switch best_match is dell_os9; if its an os10 switch I get None. Here is a the full show version output I see when I manually ssh into the os10 switch:

Dell EMC Networking OS10 Enterprise
Copyright (c) 1999-2019 by Dell Inc. All Rights Reserved.
OS Version: 10.5.0.0P1
Build Version: 10.5.0.0P1.342
Build Time: 2019-08-12T22:06:43+0000
System Type: Z9332F-ON
Architecture: x86_64
Up Time: 5 weeks 5 days 20:55:31

I’m not sure exactly at which level this is breaking; I’ll update if I find out anything more.

[sregister]

I guess we could potentially re-order such that show version comes first…and show system comes after that.

Yes I was thinking that too; I’ve confirmed that moving a show version to the top does prevent this from happening. Unfortunately means that with each reordering of that dictionary we risk introducing bugs on some other switch OS. With that said–since this hasn’t been reported before, so dell_os10 could be the only switch that has this issue and a simple reordering (while a less-than ideal solution) might be an appropriate fix.

[ktbyers]

Proposed fix is here:

https://github.com/ktbyers/netmiko/pull/2032

In the PR, the commands are executed based on their frequency (so “show version” is first).