Switch L2 IGMP Port Map

1.3.6.1.4.1.171.11.70.5.2.11.5.1.4

This object indicates which ports are belong to the same multicast group, in per-Vlan basis. Each multicast group has a octect string to indicate with port map. The most significant bit represents the lowest numbered port, and the least significant bit represents the highest numbered port . Thus, each port of the switch is represented by a single bit within the value of this object. If that bit has a value of '1' then that port is included in the set of ports; the port is not included if its bit has a value of '0'.(Note that the setting of the bit corresponding to the port from which a frame is received is irrelevant.) . The 4 octets is represent one unit port according its logic port . If the unit less 32 port , the other port don't care just fill zero .