Hello Serhad Ali Turhan,     Description When trying to configure private VLAN, for example on VLAN 1100, you may receive an error stating the VLAN interface is not in default mode.   Command Parameters S4810#configure Enter global configuration mode. S4810(config)# interface vlan 1100 Enter the a specific VLAN interface. S4810(conf-if-vl-1100)#private-vlan mode primary Set the private-vlan mode to primary on the VLAN interface. % Error: Vlan is not in default mode Vl 1100 Error stating VLAN is not in default mode. S4810(conf-if-vl-1100)#exit Return to global configuration.   Solution After checking to make sure the desired VLAN has default configurations, check to see if the switch has ip igmp snooping enabled globally near the bottom of the running configuration:   ! ip igmp snooping enable !   To configure private VLAN, disable IP IGMP snooping on the desired VLAN interface:   Command Parameters S4810#configure Enter global configuration mode. S4810(config)# interface vlan 1100 Enter the a specific VLAN interface. S4810(conf-if-vl-1100)#no ip igmp snooping Disable ip igmp snooping on the VLAN interface. S4810(conf-if-vl-1100)#private-vlan mode primary Set the private-vlan mode to primary on the VLAN interface. S4810(conf-if-vl-1100)#exit Return to global configuration.  
Hi, I'm trying to implement PVLAN in my environment. I've 2 stacked S4048-ON with couple of VMware ESXi hosts. I've created VLAN 3000 to configure it as private-vlan primary. But when I entered "private-vlan mode primary" command under interface vlan 3000, it gives "% Error: Vlan is not in default mode Vl 3000." error. The same error is displayed when I try to configure the VLAN as isolated or community, too. What is the missing part in my configuration? Has anyone encountered this issue before?  Thanks,
Error: Vlan is not in default mode Vl 3000