What is the header size of 802.1 Q?

and the maximum frame size is extended from 1,518 bytes to 1,522 bytes. Two bytes are used for the tag protocol identifier (TPID), the other two bytes for tag control information (TCI).Click to see full answer. Herein, what is the Ethernet frame size for 802.1 Q?The 802.1Q tag is 4 bytes. Therefore, the resulting Ethernet frame can be as large as 1522 bytes. The minimum size of the Ethernet frame with 802.1Q tagging is 68 bytes.Likewise, what is 802.1 Q in multi switch VLANs? IEEE 802.1Q (sometimes referred to as 1Q or DOT1Q) is a industry standards based implementation of carring traffic for multiple VLANs on a single trunking interface between two Ethernet switches. 802.1Q is for Ethernet networks only. Unlike ISL, 802.1Q does not encapsulate the original Ethernet frame. Also asked, how large is the VLAN ID in the 802.1 Q tag? IEEE 802.1Q adds a 4-byte VLAN tag between the Source/Destination MAC address and Length/Type fields of an Ethernet frame to identify the VLAN to which the frame belongs.What is the difference between 802.1 Q and ISL?ISL is a Cisco proprietary protocol for the interconnection of multiple switches and maintenance of VLAN information as traffic goes between switches. 802.1Q is the IEEE standard for tagging frames on a trunk and supports up to 4096 VLANs.