What are the disadvantages of VLAN?

VLANs can introduce complexity in network management, making configuration and troubleshooting more challenging, especially in larger networks. They may also lead to increased broadcast traffic if not properly segmented, which can degrade performance. Additionally, VLANs can create security risks if not correctly implemented, as misconfigurations might expose sensitive data across VLAN boundaries. Finally, the reliance on switches that support VLANs can increase costs for network infrastructure.