VLAN Tag StripBCM5718 Programmer’s Guide
Broadcom®
January 29, 2016 • 5718-PG108-R Page 99
Ta b le 2 5 shows the frame format with IEEE 802.1Q VLAN tag inserted.
Table 25: Frame Format with 802.1Q VLAN Tag Inserted
Offset Description
0:5 MAC destination address
6:11 MAC source address
12:13 Tag Protocol ID (TPID)—0x8100
14:15 Tag Control Information (TCI):
• Bit 15:13—IEEE 802.1P priority
• Bit 12—CFI bit
• Bit 11:0—VLAN ID
16:17 The original EtherType
18:1517 Payload