topic Re: VDX 6740 Boot Prom Password in Data Center (VDX)

VDX 6740 Boot Prom Password

Ozkan — Fri, 01 Nov 2019 15:41:23 GMT

Hi,

Can anybody help me about boot prom password recovery? One of our switches has an error : “Error: Network OS is not ready. Please login later”. I dediced to re-install firmware but when I tried to enter command shell on u-boot, asks me password. We couldnt find the it. How to reset boot prom password?

Thanks,

Re: VDX 6740 Boot Prom Password

Truyen_Phan — Fri, 01 Nov 2019 17:48:35 GMT

Hello,

Can you provide the boot recovery string that is given?

With that, we can provide the recovery string to allow you to reset the password.

Re: VDX 6740 Boot Prom Password

Ozkan — Fri, 01 Nov 2019 17:56:06 GMT

Hi,

Thank you for your reply. Here’s the recovery string;

NpNmUWe.LJy6EKFWnQQ7Zg==

Thanks,

Re: VDX 6740 Boot Prom Password

Truyen_Phan — Fri, 01 Nov 2019 17:59:03 GMT

Please try this to recover the password.

The new boot recovery password is: J3z3l36hmhEUA0ON1qnTWA==

Once it prompts you to set a new password, you can just press enter. The blank password will disable the password requirement until one is set.

Re: VDX 6740 Boot Prom Password

Truyen_Phan — Fri, 01 Nov 2019 18:12:07 GMT

Also, “Error: Network OS is not ready. Please login later” means that the configuration DB is corrupted possibly due to ungraceful shutdown, so NOS didn’t fully initialized.

Once the boot prom password is recovered, you can do the following to default the config which will allow the OS to fully initialize.

Power cycle the switch and get into Boot PROM (Hit ESC during AutoBoot)
Type 3 at the prompt to open the command shell
Enter setenv bootargs 'root=/dev/sda$prt rootfstype=ext4 quiet S'
Enter saveenv
Enter reset
Enter mount -vo remount,rw,noatime /
Enter mount /dev/sda2 /mnt
Enter /fabos/sbin/cfgcleanup to default the configuration on bootup
Enter bootenv bootargs 'root=/dev/sda$prt rootfstype=ext4 quiet'
Enter "partman -r" to reboot

Re: VDX 6740 Boot Prom Password

Ozkan — Fri, 01 Nov 2019 18:57:19 GMT

Hi,

First of all, THANK you for your support. I’ve cleared the boot prom password. I’m upgrading NOS, after that I’ll process your way 🙂

Thanks,