Not enough IGMP pvc 没有足够的IGMP PVC IGMP abbr.Internet gateway message protocol 因特网网关信息协议; Internet group management protocol 因特网组群管理协议; Internet group membership protocol 因特网组群成员协议; Internet group multicast protocol 因特网组群多播协议; pvc abbr.polyvinyl chloride 聚氯乙烯;
