topic Re: Extreme Switch Telnet asks for Password First in ExtremeSwitching (EXOS/Switch Engine)

Extreme Switch Telnet asks for Password First

vaiku — Wed, 18 Nov 2020 18:28:27 GMT

When i telnet to extreme switch it asks for password first.

Rather than asking for Username/Password.

Escape character is '^]'.

telnet session telnet0 on /dev/ptyb0

password:

Re: Extreme Switch Telnet asks for Password First

Miguel-Angel_RO — Wed, 18 Nov 2020 18:33:23 GMT

press enter

Mig

Re: Extreme Switch Telnet asks for Password First

vaiku — Wed, 18 Nov 2020 19:05:01 GMT

I have some automation build around this. I want it to ask for Login: Then password. Older extremes do that.

Re: Extreme Switch Telnet asks for Password First

davidj_cogliane — Wed, 18 Nov 2020 19:13:59 GMT

What switch and xos are we talking about?

Re: Extreme Switch Telnet asks for Password First

vaiku — Wed, 18 Nov 2020 19:18:13 GMT

System Type: X460G2-48p-10G4

ExtremeXOS version 30.2.1.8

Re: Extreme Switch Telnet asks for Password First

Miguel-Angel_RO — Wed, 18 Nov 2020 19:26:47 GMT

vaiku,

Can you post the result of : show conf detail | in telnet ?

Mig

Re: Extreme Switch Telnet asks for Password First

vaiku — Wed, 18 Nov 2020 19:32:17 GMT

show conf detail | in telnet

# Module telnetd configuration.

enable telnet

configure telnet port 23

configure telnet vr all

Re: Extreme Switch Telnet asks for Password First

Miguel-Angel_RO — Wed, 18 Nov 2020 19:35:58 GMT

Strange,

Are you using a specific telnet client sending the username automatically?

If so, could you test with a command line telnet connection?

Mig

Re: Extreme Switch Telnet asks for Password First

Miguel-Angel_RO — Wed, 18 Nov 2020 19:43:23 GMT

vaiku,

Here my output with the same settings on 30.7.1.1:

telnet session telnet0 on /dev/ptyb0

login: admin password:

ExtremeXOS Copyright (C) 1996-2020 Extreme Networks. All rights reserved. This product is protected by one or more US patents listed at https://www.extremenetworks.com/company/legal/patents/ along with their foreign counterparts. ==========================================================================

Press the <tab> or '?' key at any time for completions. Remember to save your configuration changes.

There have been 3 successful logins since last reboot and 2 failed logins since last successful login Last Successful Login was on: Wed Nov 18 11:13:49 2020

* X435-8P-2T-W.1 #

Is SSH enabled on those switches?

What is the behaviour with SSH?

Did you configured radius authentication?

Mig

Re: Extreme Switch Telnet asks for Password First

vaiku — Wed, 18 Nov 2020 20:01:26 GMT

It's a expect script that does the login and port change.

if I telnet to the switch this is what I see.

Escape character is '^]'.

telnet session telnet0 on /dev/ptyb0

password:

enter key then it asks for sure name and password.

Re: Extreme Switch Telnet asks for Password First

Miguel-Angel_RO — Wed, 18 Nov 2020 20:13:21 GMT

vaiku,

If you try with a telnet client what is the behaviour?

If it is not the same the issue rely on the expect layer.

What you coud do there is check for the input “

telnet session telnet0 on /dev/ptyb0

password:” and if it occurs, just send a carriage return to go to the username password.

Could you share the login part of the script?

Mig

Re: Extreme Switch Telnet asks for Password First

vaiku — Wed, 18 Nov 2020 20:17:57 GMT

So when I login from a terminal

I get

Escape character is '^]'.

telnet session telnet0 on /dev/ptyb0

password:

What I want to do is when I login from the terminal it should ask for login/password

not prompt for a password.

Re: Extreme Switch Telnet asks for Password First

Miguel-Angel_RO — Wed, 18 Nov 2020 20:21:26 GMT

Vaiku,

We miss something.

What is the OS used for telnet and what is the command used?

Can you try it with SSH?

Mig

Re: Extreme Switch Telnet asks for Password First

Miguel-Angel_RO — Wed, 18 Nov 2020 21:12:20 GMT

Vaiku,

This seems similar to your issue: https://extremeportal.force.com/ExtrArticleDetail?an=000088489

Mig

Re: Extreme Switch Telnet asks for Password First

vaiku — Wed, 18 Nov 2020 21:21:21 GMT

Thank you.

This helped https://extremeportal.force.com/ExtrArticleDetail?an=000088489