Question: what are extended vlans for?
Answer: Extended VLANs are VLANs within the range of 1006 to 4094. They are mainly used in service provider networks to allow the provisioning of number of customers. ... Extended VLANs are used just like normal VLANs; only different range. Extended VLANs must be configured on Switches that are in VTP Transparent mode only.