AutoInstall on the switch

Unanswered Question
Aug 19th, 2011

Hi all,

  It seems like I can't get the "Would you like to terminate AutoInstall" message on the switch when I reloaded it with no config. Any ideas? Is this feature not supported on the switch, or do I need a specific command to enter this mode? I'm running a 3560 with 12.2(58)SE. Thanks.



I have this problem too.
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garapoglou Fri, 08/19/2011 - 01:50


Is the switch connected to the network before reloading it?

Best regards,


ling20125 Fri, 08/19/2011 - 01:53

Yes, it's connected to the network and all configurations, including VLAN.DAT, are erased. But I doubt if it has anything to do with network connectivity.



garapoglou Fri, 08/19/2011 - 01:58

The Autoinstall process begins when a networking device that does not have any files in its NVRAM is connected to the network. It needs network connectivity to work.



CSCO11832637 Fri, 08/19/2011 - 02:37


i don't know why it doesn't launch but you can still run it manually:


          --- System Configuration Dialog ---

Continue with configuration dialog? [yes/no]: yes




garapoglou Fri, 08/19/2011 - 02:46


Autoinstall and Setup are two different things. Autoinstall loads configuration files automatically while Setup provides guidance to configure a device for the first time.

If you want to enter the system configuration dialog (setup) you can also switch to configuration-register 4142:

config t

config-reg 4142



But this is different than Autoinstall.

Best regards,


CSCO11832637 Fri, 08/19/2011 - 07:42

Hi Giorgos,

you're right I missunderstood

But by the way i tried the command:

     Switch(config)#conf-reg 4142

but it doesn't exist and i havn't found the equivalent command furthermore if i do a sh version, my configuration register is 0xF. So That's wired i'll investigate on it later.



garapoglou Fri, 08/19/2011 - 11:37

Oops, my mistake!

This command is used only on routers and the configuration register used to clear is 2142, not 4142 which is a typo.

Sorry about that.

The correct command used on switches, is the one you said in your previous message.

Thanks for the correction!


ling20125 Fri, 08/19/2011 - 02:47

Hi Guillame,

  I see that message "Continue with configuration dialog?", but the message I want is "Do you wish to continue with AutoInstall?". Which should pop up after saying no at the dialog



garapoglou Fri, 08/19/2011 - 02:53

Is there a DHCP server connected to the network? Besides network connectivity, Autoinstall feature, needs DHCP connectivity as well.



CSCO11832637 Fri, 08/19/2011 - 07:22


I tried with my 3560 and here is the result:

-Erase startup

-delete flash:vlan.dat


Model                        SW Version  

----------------                  -------------------              

WS-C3560-24PS         12.2(50)SE5               

Press RETURN to get started!

*Mar  1 00:00:37.396: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed state to down

*Mar  1 00:00:59.433: %SYS-5-RESTART: System restarted --

Technical Support:

Compiled Tue 28-Sep-10 13:21 by prod_rel_team

*Mar  1 00:01:30.437: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed state to up

*Mar  1 00:01:42.626: AUTOINSTALL: Vlan1 is assigned 10.x.x.86

*Mar  1 00:01:52.633: AUTOINSTALL: Obtain tftp server address (opt 150) 10.x.x.66

*Mar  1 00:01:52.633: AUTOINSTALL: Obtain default router (opt 3) 10.x.x.1

%Error opening tftp://10.x.x.66/network-confg (Timed out)

%Error opening tftp://10.x.x.66/cisconet.cfg (Timed out)

So i havn't seen the "Would you like to terminate AutoInstall" message but it run by itself quickly if i don't touch anything. At least we know the normal behavior now.

Do you have this behavior too?


ling20125 Fri, 08/19/2011 - 21:23


  @Giorgos: Yes, there is a Windows 2008 acting as the DHCP server on the network (although not on the same subnet, I have configured the router with helper-address command). And for this scope, I have set the TFTP server (option 150 I believe) and the bootfile name (option 60 something, I believe).

  @Guillame: I'm not sure I have seen this message when the switch boots up with an empty configuration though. However, I may not be paying attention. I will update with new information.



garapoglou Sat, 08/20/2011 - 00:59


Have you verified the DHCP scope is working on that subnet? Have you checked it on another device of that subnet, a PC for example?



ling20125 Sat, 08/20/2011 - 01:27

Yes, there is an AP using the same scope, and it's working fine (registered at the WLC and available with show cdp neighbors)



Leo Laohoo Sun, 08/21/2011 - 14:49
It seems like I can't get the "Would you like to terminate AutoInstall" message on the switch when I reloaded it with no config.

In enable mode, type "setup" and see what happens.

Hmmmm ... 12.2(58)SE ... Do you want to try using Zero-Touch Smart Install?

ling20125 Mon, 08/22/2011 - 02:00

I get it now, it's not I don't get the message, it's because the message is the first to appear, and when I hit "enter" several times to start, it just skips that message because it defaults to "yes" (skip it).

Now, I try to reload the switch and wait for the message, but it never shows up. Using 'setup' only brings the 'Would you like to enter initial configuration?' message, not what I wanted. And the even trickier thing: I try to type 'no' then hit enter, but I never got into AutoInstall. And the Cisco IOS actually tricks me with the message "Press RETURN to get started!". If I press return, it will just skip AutoInstall. What should I do?



PS: leo, how can I choose to use Zero Touch instead of AutoInstall? Thanks.

PPS: I finally successfully said 'no' to the 'Would you like to terminal AutoInstall?' message, but it's useless. The switch never allowed me to enter AutoInstall. See below:

Would you like to terminate autoinstall? [yes]: n

         --- System Configuration Dialog ---

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

Would you like to terminate autoinstall? [yes]: n

Switch>What do I do now?

Message was edited by: angela zou

Leo Laohoo Mon, 08/22/2011 - 15:33
PS: leo, how can I choose to use Zero Touch instead of AutoInstall? Thanks.

Hi Angela,

Follow the attachment.  It's a step-by-step guide about how-to configure Zero-Touch.

ling20125 Mon, 08/22/2011 - 19:24

  Not sure what you mean Leo, the only thing I see is how the file should be stored on the TFTP server, no tips about how to start Zero Touch.



Leo Laohoo Mon, 08/22/2011 - 19:49
no tips about how to start Zero Touch.

If you enable the VStack, this starts up Zero-Touch.  The doco I've attached will teach you how to enable Zero-Touch and implement it.

Leo Laohoo Mon, 08/22/2011 - 20:08
Um, no stackwise in the design plan, yet.

No stackwise.

The main objective where I find Zero Touch useful is when you plan to deploy alot of switches.  When you connect the new switch to your VStack director the new switch will boot up, copy a configuration template and download the correct IOS from the VStack director.  You specify what exact IOS and configuration for a specific switch.

When the new switch boots up, it will have the correct IOS and a configuration.


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