Negative-ACKnowledgment (NACK) Oriented Reliable Multicast (NORM) Parameters 2009-09-17 2009-11-25 NORM Header Extension Types Specification Required Unassigned 0 Unassigned 1 EXT_AUTH 2 Unassigned 3 EXT_CC 4-63 Unassigned 64 EXT_FTI 65-127 Unassigned 128 EXT_RATE 129-255 Unassigned NORM Stream Control Codes Specification Required Unassigned 0 NORM_STREAM_END 1-65535 Unassigned NORM_CMD Message Sub-types Specification Required Unassigned 0 Reserved 1 NORM_CMD(FLUSH) 2 NORM_CMD(EOT) 3 NORM_CMD(SQUELCH) 4 NORM_CMD(CC) 5 NORM_CMD(REPAIR_ADV) 6 NORM_CMD(ACK_REQ) 7 NORM_CMD(APPLICATION) 8-255 Unassigned