8.2.130 Packet Replication and Detection Carry-On Information
29.2443GPPInterface between the Control Plane and the User Plane nodesRelease 17TS
The Packet Replication and Detection Carry-On Information IE shall be encoded as shown in Figure 8.2.130-1.
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Bits |
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Octets |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
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1 to 2 |
Type = 179 (decimal) |
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3 to 4 |
Length = n |
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5 |
Spare |
DCARONI |
PRIN6I |
PRIN19I |
PRIUEAI |
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6 to (n+4) |
These octet(s) is/are present only if explicitly specified |
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Figure 8.2.130-1: Packet Replication and Detection Carry-On Information
The following flags are coded within Octet 5:
– Bit 1 – PRIUEAI (Packet Replication Information – UE/PDU Session Address Indication): This bit shall be set to "1" to indicate that if the packet has been received from the UE’s PDU session (e.g. the source IP address is set to the UE’s PDU IP session address, or the source MAC address is an Ethernet MAC address associated to the PDU session for an Ethernet PDU session), the UP function shall neither create a copy of the packet nor apply the corresponding processing (i.e. FAR, QER, URR). Otherwise the UPF shall perform a copy of the packet and apply the corresponding processing (i.e. FAR, QER, URR).
– Bit 2 – PRIN19I (Packet Replication Information – N19 Indication): This bit shall be set to "1" to indicate that if the packet has been received from a N19 interface (i.e. a "N19 Indication" internal flag is associated with the packet, see clause 8.2.56)), the UP function shall neither create a copy of the packet nor apply the corresponding processing (i.e. FAR, QER, URR). Otherwise the UPF shall perform a copy of the packet and apply the corresponding processing (i.e. FAR, QER, URR).
– Bit 3 – PRIN6I (Packet Replication Information – N6 Indication): This bit shall be set to "1" to indicate that if the packet has been received from a N6 interface (i.e. a "N6 Indication" internal flag is associated with the packet, see clause 8.2.56)), the UP function shall neither create a copy of the packet nor apply the corresponding processing (i.e. FAR, QER, URR). Otherwise the UPF shall perform a copy of the packet and apply the corresponding processing (i.e. FAR, QER, URR).
– Bit 4 – DCARONI (Detection Carry-On Indication): This bit shall be set to "1" to request the UP function to continue the packet detection process, i.e. look up of other PDRs of other PFCP sessions matching the packet (see clause 5.2.1).
– Bit 5 to 8 are spare and reserved for future use.