Figure13.5最小长度和最大长度 Minimum payload length:46 bytes Maximum payload length:1500 bytes Destination Source Length address address PDU Data and padding CRC 6 bytes 6 bytes 2 bytes 4 bytes Minimum frame length:512 bits or 64 bytes Maximum frame length:12,144 bits or 1518 bytes 13.813.8 Figure 13.5 最小长度和最大长度