What is the maximum number of VLANs supported by the 802.1Q standard?

The 802.1Q standard allows for a maximum of 4096 VLAN identifiers (VIDs). This is a critical aspect of VLAN configuration in Ethernet networks, as it defines the capability to segment and organize a network into different broadcast domains using VLANs. Each VLAN is identified by a unique VID, ranging from 0 to 4095, though the values 0 and 4095 are reserved for special purposes.

The capability to support up to 4096 VIDs enables network administrators to create a large number of separate and isolated networks over the same physical infrastructure. This is particularly useful in larger enterprise settings where numerous departments or user groups need to be segmented for security, performance, or organizational purposes.

Understanding the 802.1Q standard is essential for effective network design and management, as it lays the groundwork for logical network segmentation, which can help in controlling traffic, improving network performance, and enhancing security.