Huawei Telnet Authentication Fails Due to Incorrect Line Ending(\r\n VS \r)

[ningmonguo]

When connecting to certain Huawei devices via Telnet using netmiko, authentication fails if the password is sent with \r\n as the line ending. These huawei devices strictly require \r (carriage return only) for password confirmation, but the current Huawei driver in netmiko sends \r\n (carriage return + newline), causing the password to be rejected.

[evilmonkey19]

Hi! Could you specify the Huawei platform and a sample script?
Thanks :)

[ktbyers]

Did you try changing the TELNET_RETURN to be just \r? You should be able to change this dynamically.

Probably something like set auto_connect=False as argument to ConnectHandler and then.

ssh_conn = ConnectHandler(**device)
ssh_conn.TELNET_RETURN = "\r"
ssh_conn._open()

Note, it would be helpful if you specified which Huawei platform(s) you are seeing this behavior on.