Difference between revisions of "Password Recovery for Nexus Switches"

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* Connect to the Nexus switch ''directly'' via serial console ('''not''' over ssh/telnet/Opengear etc.)
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* On a Windows PC, change the keyboard layout to <code>en-US</code>
 +
* Connect to the Nexus switch ''directly'' via serial console ('''not''' over ssh/telnet/Opengear etc.) using TeraTerm or PuTTY
 +
The above two steps are not required any longer. Issueing the break sequence with a german keyboard through an Opengear console session works fine (<code>Strg + AltGr + 9</code>).
 +
 
 
* Power on the device
 
* Power on the device
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* During system bootup, type <code>Ctrl-]</code> (<code>Ctrl</code>-Key and right square bracket, that's <code>Strg</code> + <code>Alt Gr</code> + <code>9</code> on german keyboards) multiple times and wait until you get to the <code>switch(boot)#</code> prompt.
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* Wait until kickstart image has booted and the POST messages have appeared.
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* Right after the massage <code>Checking all filesystems....r. done.</code> has appeared, issue the break sequence to get to the <code>switch(boot)#</code> prompt.
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** The break sequence is <code>Ctrl + ]</code>, i.e. hold the Control-Key and hit the closing square bracket.
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** On a german keyboard (with US keymap activated) the Control-Key is <code>Strg</code> and the closing square bracket ist on the <code>+ * ~</code> - Key.
 
* Enter the <code>conf t</code> command
 
* Enter the <code>conf t</code> command
 
* Type <code>admin-password Ad123min</code>
 
* Type <code>admin-password Ad123min</code>
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* Type <code>exit</code>
 
* Type <code>dir bootflash:</code> to view bootflash content
 
* Type <code>dir bootflash:</code> to view bootflash content
 
* Boot the system image, for example <code>load bootflash:n5000-uk9.5.1.3.N2.1b.bin</code>
 
* Boot the system image, for example <code>load bootflash:n5000-uk9.5.1.3.N2.1b.bin</code>
 
* Enter the switch with username <code>admin</code> and Password <code>Ad123min</code>
 
* Enter the switch with username <code>admin</code> and Password <code>Ad123min</code>
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* Save configuration:  <code>copy running-config startup-config</code>
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The following steps are if you want to delete all previous added configs.
 +
 +
* Type <code>write erase</code> to delete all configs.
 +
* Type <code>reload</code> to restart system.
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* Save configuration:  <code>copy running-config startup-config</code>

Latest revision as of 15:55, 26 March 2019

  • On a Windows PC, change the keyboard layout to en-US
  • Connect to the Nexus switch directly via serial console (not over ssh/telnet/Opengear etc.) using TeraTerm or PuTTY

The above two steps are not required any longer. Issueing the break sequence with a german keyboard through an Opengear console session works fine (Strg + AltGr + 9).

  • Power on the device
  • Wait until kickstart image has booted and the POST messages have appeared.
  • Right after the massage Checking all filesystems....r. done. has appeared, issue the break sequence to get to the switch(boot)# prompt.
    • The break sequence is Ctrl + ], i.e. hold the Control-Key and hit the closing square bracket.
    • On a german keyboard (with US keymap activated) the Control-Key is Strg and the closing square bracket ist on the + * ~ - Key.
  • Enter the conf t command
  • Type admin-password Ad123min
  • Type exit
  • Type dir bootflash: to view bootflash content
  • Boot the system image, for example load bootflash:n5000-uk9.5.1.3.N2.1b.bin
  • Enter the switch with username admin and Password Ad123min
  • Save configuration: copy running-config startup-config

The following steps are if you want to delete all previous added configs.

  • Type write erase to delete all configs.
  • Type reload to restart system.
  • Save configuration: copy running-config startup-config
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