TP-Link T1500G-10MPS T1500G-10MPSUN V1 User Guide - Page 98
IPv6 Multicast Address
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IPv6 Multicast Address 1. IPv6 Multicast Address An IPv6 multicast address is an identifier for a group of interfaces, and has the following format: 0XFF at the start of the address identifies the address as being a multicast address. Flags have 4 bits: (1) The high-order flag is reserved, and must be initialized to 0. (2) R: Set to 0 to indicate this IPv6 multicast address does not contain an embedded RP address; set to 1 to indicate this IPv6 multicast address contains an embedded RP address. When this bit is set to 1, the P and T bits must also be set to 1. (3) P: Set to 0 to indicate this IPv6 multicast address is not based on a unicast prefix; set to 1 to indicate this IPv6 multicast address is based on a unicast prefix. When this bit is set to 1, the T bit must also be set to 1. (4) T: Set to 0 to indicate that this address is an IPv6 multicast address permanently assigned by the Internet Assigned Numbers Authority (IANA); set to 1 to indicate that this address is a transient, or dynamically assigned IPv6 multicast address. Scope is a 4-bit value used to limit the scope of the multicast group. The values are as follows: Value 0、3、F 1 2 4 5 6、7、9~D 8 E Indication reserved Interface-Local scope Link-Local scope Admin-Local scope Site-Local scope unassigned Organization-local scope Global scope Table 8-2 Indications of the Scope 89