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I was asked to hunt down an issue where newly-created VLANs were not showing up in the running configuration (or the startup configuration) of the switch. lab3850-sw-1#conf t Enter configuration commands, one per line. End with CNTL/Z. lab3850-sw-1(config)#vlan 2 lab3850-sw-1(config-vlan)#name test lab3850-sw-1#sh run vlan 2 Building configuration... Current configuration: end At first, I thought it was a corrupt VLAN database. To test, I removed the vlan.dat file and then recreated it (by adding a VLAN)....