An administrator is trying to remove configurations from a switch. After using the command erase startup-config and reloading the switch, the administrator finds that VLANs 10 and 100 still exist on the switch. Why were these VLANs not removed?

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Last Updated on October 29, 2020 by Admin

An administrator is trying to remove configurations from a switch. After using the command erase startup-config and reloading the switch, the administrator finds that VLANs 10 and 100 still exist on the switch. Why were these VLANs not removed?

  • These VLANs cannot be deleted unless the switch is in VTP client mode.
  • These VLANs can only be removed from the switch by using the no vlan 10 and no vlan 100 commands.
  • These VLANs are default VLANs that cannot be removed.
  • Because these VLANs are stored in a file that is called vlan.dat that is located in flash memory, this file must be manually deleted.
    Answers Explanation & Hints:

    Standard range VLANs (1-1005) are stored in a file that is called vlan.dat that is located in flash memory. Erasing the startup configuration and reloading a switch does not automatically remove these VLANs. The vlan.dat file must be manually deleted from flash memory and then the switch must be reloaded.

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