人厄工营火 HEFEI UNIVERSITY OF TECHNOLOGY 主机A 主机B Ethernet D MAC S MAC Type Data FCS IEEE802.3 D.MAC S MAC Length LLC SNAP Data FCS Length/Type >=1536 (0X0600 Ethernet‖l Length/Type < 1500(0X05DC) IEEE802. 3 age 6帧格式 Ethernet_II IEEE802.3 D.MAC S.MAC Type Data FCS D.MAC S.MAC Length LLC SNAP Data FCS Length/Type >= 1536 (0x0600) Ethernet_II Length/Type <= 1500 (0x05DC) IEEE802.3 Page 6 主机 A 主机 B