C3650 Login Banner

[CofMHCisco]

I am upgrading a spare WS-C3650-48TQ-S from 03.03.05SE to 16.09.05. This went well.

However when creating the configuration I think I should have created the User then Password then Login Banner.

I did not....I created the Login Banner first now the switch wants a user and password.

Is there a default I can use or what do I need to do?

[balaji.bandi]

Does not matter, as long as you are config mode, you can do any order.

but as soon as you write and logout -- you need to login with new credentials.

[CofMHCisco]

Thanks for your fast response.

I am out of config mode....I get the banner but the switch is asking for credentials....credentials which I have not created yet.

So how do I get around this?

[balaji.bandi]

is this brand new switch? looks like someone has already setup done initially.

if you do not have login credentials you need to reset.

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3560/software/release/12-2_52_se/configuration/guide/3560scg/swtrbl.html

[CofMHCisco]

I have the proper login credentials from before I upgraded the switch...they do not work.

I could not find a config.txt to rename per the password reset procedure (see attached).

Suggestions?

[CofMHCisco]

Also...the switch is not new....it ran for about 5 years before I removed it. I am now upgrading it. As mentioned, the upgrade went well, I was doing the configuration when this happened.

When I let it boot it boots and shows version 16.9.5 now.

The original username/password do not work.

When I interrupt the boot sequence to get to the switch: prompt I cannot complete the password recovery because I do not see a config.txt file to rename.

I did do a copy running-startup during the config process (at least once).

Suggestions? I can re-do the config...I just need to get back into the switch to proceed.

[CofMHCisco · Accepted solution]

You are locked out of a C3650 and need to perform Password Recovery

You will need a laptop with a console cable connected.

Step 1

The first step is to power your switch off

Step 2

Hold the Mode Button down and connect the power – after about 12 seconds the SYST LED will go Amber along with all the other four LEDS. Release the Mode Button

If this step has gone well, you should see the following on your laptop:

You now need to enter the two following command

Next reboot the switch with the following command

I did not get the following prompt...if I did I would have said No

Would you like to enter the initial configuration dialog? [yes/no]:

Enable worked

Step 3

show running-config

copy running-config startup-config

conf t

username name-admin priv 15 secret ________   (enter in plain text)

show running-config

          Verify username is there

          Observed no aaa new-model

Once you have performed those steps you just need to tell the 3650 to check it’s startup config on the next boot again, you do this with the command you used earlier to ignore it.

conf t

no system ignore startupconfig switch all

copy running-config startup-config OR write memory

Reload to reload your switch and you should be able to log back in with your newly created password.

Verify

This is what worked for me