snVLanByPortPortList 1.3.6.1.4.1.11.2.3.7.11.12.1.3.2.1.1.28

A list of port indices which are the port membership of a VLAN By Port. Each port index is a 16-bit integer in big endian order. 8-bit is the slot number, the other 8-bit is the port number.