cisco_lad2004 Mon, 04/09/2007 - 06:18
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try to rename it or change to transparent mode then back.

Amit Singh Mon, 04/09/2007 - 07:18
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When you configure a domain name, it cannot be removed; you can only reassign a switch to a different domain.


-amit singh

To go back to the factory default "null" domain on IOS switches, like the 3750, you have to delete the vlan.dat file in flash. This will also delete all non-default vlans.


Switch#delete flash:vlan.dat

Delete filename [vlan.dat]?

Delete flash:vlan.dat? [confirm]

Switch#reload


System configuration has been modified. Save? [yes/no]: no


This will not delete the non-default configuration file, just the vlans, VTP domain and reset the config rev# to 0


If you want to truly go back to factory defaults (non-configuration file & the vlan and VTP information) then do the following:


Switch#erase start

Erasing the nvram filesystem will remove all files! Continue? [confirm]

[OK]

Erase of nvram: complete

Switch#delete flash:vlan.dat

Delete filename [vlan.dat]?

Delete flash:vlan.dat? [confirm]

Switch#reload


System configuration has been modified. Save? [yes/no]: no

Proceed with reload? [confirm]


Hope this helps


Rody

markwgallagher Mon, 04/09/2007 - 07:59
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The default is a NULL string, just blank.


try setting the domain again with no value, and it should go back to the empty, default setting.

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