This read-create BITS value selects which protocol-related fields a basic flow template matches on, with bit positions for l2Potocol, ipv4L3Protocol, ipv6L3Protocol, icmpProtocolType, icmpProtocolCode, icmpv6ProtocolType, icmpv6ProtocolCode, sourceL4Port, and destL4Port. An admin sets these bits to define which protocol layers and fields the template inspects, such as source and destination Layer 4 ports for TCP/UDP classification. An admin building a template to classify traffic by destination port would set the destL4Port(8) bit in hh3cFTBasicGroupProtocolType.