Password Recovery for VDX6740

[80sNRG]

Hi there,

I've inherited some network gear.
Dumb question I fear - may I have some help with password recovery?
2x VDX6740s in VCS Logical Chassis running OS 6.0.2b
Root account is disabled and the admin password has been lost.

I've been reading some of the manuals and Googling around and it looks somewhat more involved than I was expecting.

Failing that, what are the steps to flattening the pair? (While keeping whatever license keys are on device)
I have an old backup of the config and I'm alright(ish) with the Brocade stuff so I could rebuild them.

I'm happy to do whichever is quickest and causes the least amount of sadness.

I really appreciate any help you can provide 

[80sNRG]

Wow, thank you so much!
That's brilliant, I'll arrange a spot of downtime and give the above a go.

I'll let you know how I get on. ?

[Truyen_Phan]

*Re-posting since the format got mangled*

Hello,

You can do below to recover the password.

• If you want to keep the config, then go thru all the steps on one switch
• If you are ok to default the config on both switches (licenses will be retained), complete only steps 1-14 on both switches.

Disable the ISL from selected switch, recover the password, then default the configuration to allow it to rejoin and become principal to make changes to admin password

1. Disconnect all ISL from the selected switch
2. Power cycle the switch and get into Boot PROM (Hit ESC during AutoBoot)
3. Type '3' at the prompt to open the command shell
4. Entersetenv bootargs 'root=/dev/sda$prt rootfstype=ext4 quiet S'
5. Enter saveenv
6. Enter reset
7. Enter mount -vo remount,rw,noatime /
8. Enter mount /dev/sda2 /mnt
9. Enter cp /etc/fabos/user.db /etc/fabos/user.db.bkup
10. Enter cp /etc/fabos/user.db.default /etc/fabos/user.db
11. Enter /sbin/passwddefault -f
12. Enter cfgcleanup to default the configuration on bootup
13. Enter bootenv bootargs 'root=/dev/sda$prt rootfstype=ext4 quiet'
14. Enter "partman -r" to reboot
15. Keep ISL disconnected until the switch fully boots up
16. Once the switch boots up, login as admin/password
17. With admin still logged in, physically connect the ISL to the fabric to let the switch rejoin. The switch rejoin while the admin is still logged in to the switch
18. Once the switch rejoins, go to config t -> RB , enter 'logical-chassis principal-priority 1'to make it the new principal switch
19. Then, run 'logical-chassis principal switchover' to make the new switch the principal switch to reconfigure the admin account.

[Truyen_Phan]

Hello,

You can do below to recover the password.

• If you want to keep the config, then go thru all the steps on one switch
• If you are ok to default the config on both switches (licenses will be retained), complete only steps 1-14 on both switches.

Disable the ISL from selected switch, recover the password, then default the configuration to allow it to rejoin and become principal to make changes to admin password

1. Disconnect all ISL from the selected switch
2. Power cycle the switch and get into Boot PROM (Hit ESC during AutoBoot)
3. Type '

   3' 

   at the prompt to open the command shell
4. Enter

   setenv bootargs 'root=/dev/sda$prt rootfstype=ext4 quiet S'

5. Enter

   saveenv

6. Enter

   reset

7. Enter

   mount -vo remount,rw,noatime /

8. Enter

   mount /dev/sda2 /mnt

9. Enter

   cp /etc/fabos/user.db /etc/fabos/user.db.bkup

10. Enter

    cp /etc/fabos/user.db.default /etc/fabos/user.db

11. Enter

    /sbin/passwddefault -f

12. Enter

    cfgcleanup 

    to default the configuration on bootup
13. Enter

    bootenv bootargs 'root=/dev/sda$prt rootfstype=ext4 quiet'

14. Enter

    "partman -r" to reboot

15. Keep ISL disconnected until the switch fully boots up
16. Once the switch boots up, login as admin/password
17. With admin still logged in, physically connect the ISL to the fabric to let the switch rejoin. The switch rejoin while the admin is still logged in to the switch
18. Once the switch rejoins, go to config t -> RB , enter

    'logical-chassis principal-priority 1'

    to make it the new principal switch
19. Then, run

    'logical-chassis principal switchover'

    to make the new switch the principal switch to reconfigure the admin account.