100VG-AnyLAN is a 100-Mbps LAN technology standard that at one time, directly competed with 100BaseT Ethernet (Fast Ethernet). The IEEE 802.12 committee was responsible for investigating this standard. The access method used by this standard is different from the CSMA/CD method used by 10-Mbps Ethernet and Fast Ethernet. However, the MAC frame format stays the same. The access method for this standard was called "demand priority."