There is a bug in DYNAGEN that after restarting a switch when we create VALN, it gives the following error:

%  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)

To solve this problem, we need to erase flash. After this, you can create new VLANs successfully. Remember , after removing the flash:vlan.dat file, the current configuration of VLANs remain there until the switch has been restarted. So, just save running configuration to statup before closing the Dynagen. This will create a new vlan.dat file having old as well as new config. The following snapshot shows the flash erasing process: