當配置多個vlan時候，在鍵入exit或apply時候經常會出現下面的出錯信息，使得無法創建新的vlan

SW1(vlan)#exit

% not enough space on flash to store vlan database. trying squeeze...First create squeeze log by erasing the entire device

% error squeezing flash - (Missing Or corrupted log)

Error on database apply 40: NV storage failure

Use /'abort/' command to exit

SW1(vlan)#

sw1#erase flash:

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

Erasing device... eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee ...erased

Erase of flash: complete

解決辦法:出現錯誤時候，鍵入abort先退到特權模式，然后打入erase flash，點確定完，再進入vlan database配置vlan即可。