rfc9634v2.txt   rfc9634.txt 
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+---------------------------------+ | +---------------------------------+ |
| IP Header | | | IP Header | |
+---------------------------------+ <--/ +---------------------------------+ <--/
| Data-Link | | Data-Link |
+---------------------------------+ +---------------------------------+
| Physical | | Physical |
+---------------------------------+ +---------------------------------+
Figure 1: DetNet Associated Channel Header Format Figure 1: DetNet Associated Channel Header Format
Where: * DetNet ACH - the DetNet Associated Channel Header as defined in
DetNet ACH is the DetNet Associated Channel Header defined in
[RFC9546]. [RFC9546].
PREOF - Packet Replication, Elimination, and Ordering Functions * PREOF - Packet Replication, Elimination, and Ordering Functions
used in the DetNet service sub-layer as defined in [RFC8655]. used in the DetNet service sub-layer as defined in [RFC8655].
3.4. The Application of Y.1731/G.8013 Using GRE-in-UDP Encapsulation 3.4. The Application of Y.1731/G.8013 Using GRE-in-UDP Encapsulation
[RFC8086] has defined the method of encapsulating GRE (Generic [RFC8086] has defined the method of encapsulating GRE (Generic
Routing Encapsulation) headers in UDP. GRE-in-UDP encapsulation can Routing Encapsulation) headers in UDP. GRE-in-UDP encapsulation can
be used for IP DetNet OAM, as it eases the task of mapping an OAM be used for IP DetNet OAM, as it eases the task of mapping an OAM
test session to a particular IP DetNet flow that is identified by an test session to a particular IP DetNet flow that is identified by an
N-tuple. Matching a GRE-in-UDP tunnel to the monitored IP DetNet N-tuple. Matching a GRE-in-UDP tunnel to the monitored IP DetNet
flow enables the use of Y.1731/G.8013 [ITU.Y1731] as a comprehensive flow enables the use of Y.1731/G.8013 [ITU.Y1731] as a comprehensive
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