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Deterministic Networking SRv6 Data Plane
draft-varga-detnet-srv6-data-plane-01

Document Type Active Internet-Draft (individual)
Authors Balazs Varga , Ferenc Fejes
Last updated 2024-12-18
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draft-varga-detnet-srv6-data-plane-01
DetNet                                                     B. Varga, Ed.
Internet-Draft                                                  F. Fejes
Intended status: Standards Track                                Ericsson
Expires: 21 June 2025                                   18 December 2024

                Deterministic Networking SRv6 Data Plane
                 draft-varga-detnet-srv6-data-plane-01

Abstract

   This document specifies the Deterministic Networking (DetNet) data
   plane when operating over an IPv6/SRv6 Packet Switched Network.  It
   leverages existing IPv6 encapsulations using DetNet specific SIDs and
   optionaly the Traffic Engineering mechanisms provided by SRv6.  This
   document builds on the DetNet architecture and data plane framework.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on 21 June 2025.

Copyright Notice

   Copyright (c) 2024 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents (https://trustee.ietf.org/
   license-info) in effect on the date of publication of this document.
   Please review these documents carefully, as they describe your rights
   and restrictions with respect to this document.  Code Components
   extracted from this document must include Revised BSD License text as
   described in Section 4.e of the Trust Legal Provisions and are
   provided without warranty as described in the Revised BSD License.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
     2.1.  Terms Used in This Document . . . . . . . . . . . . . . .   3
     2.2.  Abbreviations . . . . . . . . . . . . . . . . . . . . . .   3
     2.3.  Requirements Language . . . . . . . . . . . . . . . . . .   4
   3.  DetNet SRv6 Data Plane Overview . . . . . . . . . . . . . . .   4
     3.1.  DetNet sub-layers with SRv6 Data Plane  . . . . . . . . .   4
     3.2.  DetNet SRv6 Data Plane Scenarios  . . . . . . . . . . . .   5
   4.  SRv6-Based DetNet Data Plane Solution . . . . . . . . . . . .   6
     4.1.  DetNet Over SRv6 Encapsulation Components . . . . . . . .   6
     4.2.  SRv6 Data Plane Encapsulation . . . . . . . . . . . . . .   7
       4.2.1.  DetNet specific SID . . . . . . . . . . . . . . . . .   8
       4.2.2.  Flow-ID . . . . . . . . . . . . . . . . . . . . . . .   9
       4.2.3.  SeqNum  . . . . . . . . . . . . . . . . . . . . . . .  10
     4.3.  Service Sub-Layer Related Processing  . . . . . . . . . .  10
       4.3.1.  Packet Replication Function Processing  . . . . . . .  10
       4.3.2.  Packet Elimination Function Processing  . . . . . . .  11
       4.3.3.  Packet Ordering Function Processing . . . . . . . . .  11
     4.4.  Forwarding Sub-Layer Related Processing . . . . . . . . .  12
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .  12
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  12
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  12
   8.  Normative References  . . . . . . . . . . . . . . . . . . . .  12
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  13

1.  Introduction

   Deterministic Networking (DetNet) is a service that can be offered by
   a network to DetNet flows.  DetNet provides a capability for the
   delivery of data flows with extremely low packet loss rates and
   bounded end-to-end delivery latency.  General background and concepts
   of DetNet can be found in the DetNet Architecture [RFC8655].

   The purpose of this document is to describe the use of the IPv6/SRv6
   data plane to establish and support DetNet flows.  The DetNet
   Architecture models the DetNet related data plane functions
   decomposed into two sub-layers: a service sub-layer and a forwarding
   sub-layer.  The service sub-layer is used to provide DetNet service
   functions such as protection and reordering.  At the DetNet data
   plane a new set of functions (PREOF) provide the service sub-layer
   specific tasks.  The forwarding sub-layer is used to provide
   forwarding assurance (low loss, assured latency, and limited out-of-
   order delivery).  The use of the functionalities of the DetNet
   service sub-layer and the DetNet forwarding sub-layer require careful
   design and control by the controller plane in addition to the DetNet
   specific use of SRv6 encapsulation as specified by this document.

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   This document specifies the DetNet data plane operation and the on-
   wire encapsulation of DetNet flows over an IPv6/SRv6-based Packet
   Switched Network (PSN) using the service reference model.

2.  Terminology

2.1.  Terms Used in This Document

   This document uses the terminology established in the DetNet
   architecture [RFC8655] and in the SRv6 Network Programming [RFC8986].
   The reader is assumed to be familiar with that document and its
   terminology.

   The following terminology is introduced in this document:

   Flow-ID       A DetNet "service" identifier that is used between
                 DetNet nodes that implement the DetNet service sub-
                 layer functions.  A Flow-ID is used to identify a
                 DetNet flow at DetNet service sub-layer at a receiving
                 DetNet node.

   SeqNum        A SeqNum is used for sequencing information of a DetNet
                 flow at the DetNet service sub-layer.

2.2.  Abbreviations

   The following abbreviations are used in this document:

   ARG           Arguments.

   DetNet        Deterministic Networking.

   FUNCT         Function.

   LOC           Locator.

   PEF           Packet Elimination Function.

   POF           Packet Ordering Function.

   PREOF         Packet Replication, Elimination and Ordering Functions.

   PRF           Packet Replication Function.

   SeqNum        Sequence Number.

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2.3.  Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in BCP
   14 [RFC2119] [RFC8174] when, and only when, they appear in all
   capitals, as shown here.

3.  DetNet SRv6 Data Plane Overview

3.1.  DetNet sub-layers with SRv6 Data Plane

   A straight forward approach utilizing SRv6 for a DetNet service sub-
   layer is based on the DetNet specific SID
   [I-D.varga-spring-preof-sid] and by optionaly utilizing existing SRv6
   Traffic Engineering encapsulations and mechanisms using SRH between
   the DetNet Relay nodes.  Background on SRv6 Network Programming can
   be found in [RFC8986].

                DetNet        SRv6
                  .
              +------------+
              |  Service   | DetNet specific SID (Flow-ID, SeqNum)
              +------------+
              | Forwarding | SRv6 tunnel (IPv6 header, SRH)
              +------------+
                  .

      Figure 1: DetNet Adaptation to SRv6 Data Plane used in both sub-
                                   layers

   The DetNet SRv6 data plane representation is illustrated in Figure 1.
   The service sub-layer includes a DetNet specific SID that contains
   the Flow-ID and the SeqNum.  More details of DetNet specific SID
   behaviors are described in [I-D.varga-spring-preof-sid].

   A node operating on a received DetNet flow at the Detnet service sub-
   layer terminates the SRv6 encapsulation, uses the local context
   associated with a Flow-ID, to determine which local DetNet
   operation(s) are applied to that packet.  It is important to note
   that Flow-ID values are driven by the receiver, not the sender.

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   Optionaly, the DetNet forwarding sub-layer is supported by the SRv6
   tunnel header (e.g., SRH, TC, Flowlabel).  SRv6 Traffic Engineering
   mechanisms may be utilized to provide a forwarding sub-layer that is
   responsible for providing resource allocation and explicit routes.
   Other forwarding sub-layer solutons (e.g., policy based routing) are
   not precluded.

3.2.  DetNet SRv6 Data Plane Scenarios

   DetNet SRv6       Relay       Transit         Relay       DetNet SRv6
   End System        Node         Node           Node        End System
   +----------+                                             +----------+
   |   Appl.  |<------------ End to End Service ----------->|   Appl.  |
   +----------+   +---------+                 +---------+   +----------+
   | Service  |<--| Service |-- DetNet flow --| Service |-->| Service  |
   +----------+   +---------+  +----------+   +---------+   +----------+
   |Forwarding|   |Fwd| |Fwd|  |Forwarding|   |Fwd| |Fwd|   |Forwarding|
   +-------.--+   +-.-+ +-.-+  +----.---.-+   +-.-+ +-.-+   +---.------+
           :  Link  :    /  ,-----.  \   : Link :    /  ,-----.  \
           +........+    +-[  Sub  ]-+   +......+    +-[  Sub  ]-+
                           [Network]                   [Network]
                            `-----'                     `-----'
           |<- SRv6 ->| |<-------- SRv6 ----------| |<-- SRv6 -->|

           |<--------------- DetNet SRv6 domain ---------------->|

                  Figure 2: A DetNet SRv6 Network example

   Figure 2 illustrates a hypothetical DetNet SRv6 network composed of
   DetNet aware SRv6 enabled end systems, operating over a DetNet aware
   SRv6 network.  In this figure, SRv6 tunnels are used between the
   DetNet nodes implementing the service sub-layer.

   DetNet end systems and relay nodes understand the particular needs of
   DetNet flows and provide both DetNet service and forwarding sub-layer
   functions.  In this illustrative case, DetNet service-aware nodes
   creates/terminates the SRv6 tunnels and add/remove/process SeqNum and
   Flow-ID as needed.

   In a DetNet SRv6 network, transit nodes may be DetNet service aware
   or may be DetNet unaware SRv6 Routers.  In this latter case, such
   Routers would be unaware of the special requirements of the DetNet
   service sub-layer, but would still provide traffic engineering
   functions and the QoS capabilities needed to ensure that the SRv6
   tunnels meet the service requirements of the carried DetNet flows.

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   Figure 3 illustrates how an end-to-end SRv6-based DetNet service is
   provided in more detail.  In this figure, the customer end systems,
   CE1 and CE2, are able to send and receive SRv6 encapsulated DetNet
   flows, and R1, R2 and R3 are relay nodes in the middle of a DetNet
   network.  The SRv6 tunnels between the Relay nodes may include
   transit nodes, which are not illustrated in the figure.  The 'X' in
   the end systems, and relay nodes represents potential DetNet compound
   flow packet replication and elimination points.  In this example,
   service protection is supported by utilizing at least two DetNet
   member flows and TE tunnels.  For a unidirectional flow, R1 supports
   PRF and R3 supports PEF and POF.

           DetNet                                         DetNet
   DetNet  Service        Transit          Transit       Service  DetNet
   SRv6    |             |<-Tnl->|        |<-Tnl->|            |  SRv6
   End     |             V   1   V        V   2   V            |  End
   System  |    +--------+       +--------+       +--------+   |  System
   +---+   |    |   R1   |=======|   R2   |=======|   R3   |   |  +---+
   |  X...DFa...|._X_....|..DF1..|.__ ___.|..DF3..|...._X_.|.DFa...X  |
   |CE1|========|    \   |       |   X    |       |   /    |======|CE2|
   |   |   |    |     \_.|..DF2..|._/ \__.|..DF4..|._/     |   |  |   |
   +---+        |        |=======|        |=======|        |      +---+
       ^        +--------+       +--------+       +--------+      ^
       |        Relay Node       Relay Node       Relay Node      |
       |                                                          |
       |<- SRv6 --> <----- SRv6 ----> <----- SRv6 -----> <- SRv6->|
       |                                                          |
       |<---------------- DetNet SRv6 domain -------------------->|
       |                                                          |
       |<--------------- End to End DetNet Service -------------->|

     --------------------------- Data Flow ------------------------->

   X   = Optional service protection (none, PRF, PREOF, PEF/POF)
   DFx = DetNet member flow x over a TE tunnel

                    Figure 3: SRv6 based DetNet Service

4.  SRv6-Based DetNet Data Plane Solution

4.1.  DetNet Over SRv6 Encapsulation Components

   To carry DetNet over SRv6 the following is required:

   1.  A method of identifying the SRv6 payload type.

   2.  A method of identifying the DetNet flow(s) to the processing
       element.

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   3.  A method of carrying the DetNet sequence number.

   4.  A suitable tunnel to deliver the packet to the egress node.

   5.  A method of carrying queuing and forwarding indication.

   In this design the IPv6 NextHeader or the SRH refers to the payload
   type.  The DetNet specific SID contains the Flow-ID and the SeqNum
   information.  To simplify implementation and to maximize
   interoperability two sequence number sizes are supported: a 16 bit
   sequence number and a 28 bit sequence number.

   The SRv6 encapsulation is used to forward the DetNet packet across
   the IPv6/SRv6 network between the DetNet Relay nodes and to indicate
   (e.g., by the SID(s), TC, Flowlabel) the required queue processing as
   well as the forwarding parameters.

4.2.  SRv6 Data Plane Encapsulation

   Figure 4 illustrates a DetNet data plane SRv6 encapsulation.  The
   SRv6-based encapsulation of the DetNet flows is well suited for the
   scenarios described in [RFC8938].

   The SRv6-based DetNet data plane encapsulation consists of:

   *  DetNet specifc SID containing flow identification and sequencing
      information for packet replication, duplicate elimination and
      ordering purposes.

   *  Zero or more SID(s) used to direct the packet along the SRv6
      tunnel to the next DetNet service sub-layer processing node.

   *  The necessary data-link encapsulation is then applied prior to
      transmission over the physical media.

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        DetNet SRv6-based encapsulation example

      +---------------------------------+
      |                                 |
      |         DetNet App-Flow         |
      |         Payload  Packet         |
      |                                 |
      +---------------------------------+ <--\
      |              SRH                |    |
      |   (SID(s) defining the path)    |    |
      | (Last SID = DetNet specific SID |    |
      |      with Flow-ID + SeqNum)     |    |
      +---------------------------------+    +--> DetNet data plane
      |        IPv6 header (SRv6)       |    |    SRv6 encapsulation
      +---------------------------------+ <--/
      |           Data-Link             |
      +---------------------------------+
      |           Physical              |
      +---------------------------------+

        Figure 4: Encapsulation of a DetNet App-Flow in an SRv6 PSN

   Note: usage of SRv6 as the forwarding sub-layer between the DetNet
   Relay nodes is optional.  In such cases the DetNet specific SID is
   set as the IPv6 destination address during the encapsulation.

4.2.1.  DetNet specific SID

   For PREOF processing, two arguments are needed:

   1.  Flow-ID: defines which DetNet flow the packet belongs to (what is
       used to determine which PREOF instance has to be used on a node).
       Its size is 20 bits for the DetNet MPLS data plane [RFC8986] and
       same size is appropriate for DetNet SRv6 data plane as well.

   2.  SeqNum: defines the sequencing information, it is created at the
       DetNet edge node (or by the first PRF node) and used by PEF/POF
       functionalities.  Same sizes as for the DetNet MPLS data plane
       are defined for the SRV6 case: 0/16/28 bits [RFC8964].

   The required size for these two arguments are maximum 48 bits.  The
   explicit format (size of the three parts) of a DetNet specific SID is
   network addressing design specific.  PREOF specific parameters are
   encoded as follows:

   *  LOC: specifies the DetNet Relay node (same allocation rule applies
      as for any SRv6-enabled node).

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   *  FUNCT: a single value represents all PREOF instances of a DetNet
      Relay node.

   *  ARG: Contains the Flow-ID and the SeqNum parameters.

   The Flow-ID and SeqNum start at the MSB of the ARG.  Unused bits (if
   any) MUST be set to zero (0).

      0                   1                   2                   3
      0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     |                                                               |
     +-                         LOC (64 bits)                       -+
     |                                                               |
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     |         FUNCT (16 bits)       |     Flow-ID (20 bits)         |
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     |Flow-ID|       SeqNum (16 bits)        |0 0 0 0 0 0 0 0 0 0 0 0|
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

    Figure 5: DetNet-specific SID example - LOC(64)+FUNCT(16)+ARG(Flow-
                             ID(20)+SeqNum(16))

   Note: if Function=PREOF, Argument=0 is also a meaningful value and
   does not refer to the lack of arguments.

   The DetNet-specific SID MUST be the last segment in an SR Policy, if
   SRv6 TE tunnels are used between the DetNet Relay nodes.

4.2.2.  Flow-ID

   A DetNet flow at the DetNet service sub-layer is identified by a
   Flow-ID.  SRv6-aware DetNet end systems and edge nodes, which are by
   definition SRv6 ingress and egress nodes, MUST add and remove a
   DetNet service-specific SID and the SRv6 tunnel information (SRH, if
   exists).  Relay nodes MAY swap Flow-ID values when processing a
   DetNet flow, i.e., incoming and outgoing Flow-IDs of a DetNet flow
   can be different.

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   Flow-ID values MUST be provisioned per DetNet service via
   configuration, i.e., via the controller plane described in [RFC8938].
   Note that Flow-IDs provide identification at the downstream DetNet
   service sub-layer receiver, not the sender.  As such, Flow-IDs MUST
   be allocated by the entity that controls the service sub-layer
   receiving node's Flow-ID space.  Because Flow-IDs are local to each
   node rather than being a global identifier within a domain, they MUST
   be advertised to their upstream DetNet service-aware peer nodes
   (i.e., a DetNet SRv6 End System or a DetNet Relay or Edge Node).

   When receiving a DetNet SRv6 packet, an implementation MUST identify
   the DetNet service associated with the incoming packet based on the
   Flow-ID.

4.2.3.  SeqNum

   The sequence number characteristics MUST comply with the requirements
   specified in [RFC8964].

4.3.  Service Sub-Layer Related Processing

   DetNet SRv6 end systems, edge nodes and relay nodes may operate at
   the DetNet service sub-layer with understanding of DetNet services
   and their requirements.  When operating at this layer such nodes can
   push, pop or swap Flow-IDs.  Optionaly, the SRH SID(s) can specify
   the SRv6 tunnel used by the DetNet flow.

   Note, when PRF is supported, the same app-flow data will be sent over
   multiple outgoing DetNet member flows using e.g., forwarding sub-
   layer SRv6 tunnels.  This means that implementation may send
   different sets of SRH SID(s) per DetNet member flow, each with a
   proper Flow-ID in the DetNet specific SID.

4.3.1.  Packet Replication Function Processing

   The Packet Replication Function (PRF) function MAY be supported by an
   implementation for outgoing DetNet flows.  The use of the PRF for a
   particular DetNet service MUST be provisioned via configuration,
   i.e., via the controller plane described in [RFC8938].

   When replication is configured, the same app-flow data will be sent
   over multiple outgoing DetNet member flows using forwarding sub-layer
   tunnels.  An Flow-ID value MUST be configured per outgoing member
   flow.  The same SeqNum field value MUST be used on all outgoing
   member flows for each replicated data packet.

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4.3.2.  Packet Elimination Function Processing

   Implementations MAY support the Packet Elimination Function (PEF) for
   received DetNet SRv6 flows.  When supported, use of the PEF for a
   particular DetNet service MUST be provisioned via configuration,
   i.e., via the controller plane described in [RFC8938].

   After a DetNet service is identified for a received DetNet SRv6
   packet, if PEF is configured for that DetNet service, duplicate
   (replicated) instances of a particular sequence number MUST be
   discarded.  The specific mechanisms used for an implementation to
   identify which received packets are duplicates and which are new is
   an implementation choice.  Note that per Section 4.2.3 the sequence
   number field length may be 16 or 28 bits, and the field value can
   wrap.  PEF MUST NOT be used with DetNet flows configured with a
   sequence number field length of 0 bits.

   An implementation MAY constrain the maximum number of sequence
   numbers that are tracked on either a platform-wide or per flow basis.
   Some implementations MAY support the provisioning of the maximum
   number of sequence numbers that are tracked on either a platform-wide
   or per flow basis.

4.3.3.  Packet Ordering Function Processing

   A function that is related to in-order delivery is the Packet
   Ordering Function (POF).  Implementations MAY support POF.  When
   supported, use of the POF for a particular DetNet service MUST be
   provisioned via configuration, i.e., via the controller plane
   described by [RFC8938].

   Implementations MAY require that PEF and POF be used in combination.
   There is no requirement related to the order of execution of the
   Packet Elimination and Ordering Functions in an implementation.

   After a DetNet service is identified for a received DetNet SRv6
   packet, if POF is configured for that DetNet service, packets MUST be
   processed in the order indicated in the received SeqNum field, which
   may not be in the order the packets are received.  As defined in
   Section 4.2.3 the sequence number field length may be 16 or 28 bits,
   is incremented by one (1) for each new data packet sent for a
   particular DetNet service, and the field value can wrap.

   The specific mechanisms used for an implementation to identify the
   order of received packets is an implementation choice.  Some possible
   implementations are described in [RFC9550]

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4.4.  Forwarding Sub-Layer Related Processing

   Using SRv6 as a forwarding sub-layer between DetNet Relay nodes is
   optional.  Other Traffic Engineering technologies (e.g., policy based
   routing) are NOT precluded.

   If SRv6 is selected for TE, the SRv6 tunnel is used to provide
   connectivity between DetNet service sub-layer processing nodes.  In
   such cases, the DetNet forwarding sub-layer provides explicit routes
   and allocated resources, and the SRv6 tunnel specific header (e.g.,
   SRH, TC, Flowlabel) is used to map to each.  Explicit routes are
   supported based on the SRH.

5.  Security Considerations

   DetNet PREOF related security considerations are described in section
   3.3 of [RFC9055].  SRv6 Network Programming related security
   considerations are described in section 9 of [RFC8986].  There are no
   additional related security considerations originating from this
   document.

6.  IANA Considerations

   This document makes no IANA requests.

7.  Acknowledgements

   Authors extend their appreciation to Janos Farkas, Istvan Moldovan
   and Miklos Mate for their insightful comments and productive
   discussion that helped to improve the document.

8.  Normative References

   [I-D.varga-spring-preof-sid]
              Varga, B. and F. Fejes, "Deterministic Networking specific
              SID", Work in Progress, Internet-Draft, draft-varga-
              spring-preof-sid-00, 19 June 2024,
              <https://datatracker.ietf.org/doc/html/draft-varga-spring-
              preof-sid-00>.

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119,
              DOI 10.17487/RFC2119, March 1997,
              <https://www.rfc-editor.org/info/rfc2119>.

   [RFC8174]  Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC
              2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174,
              May 2017, <https://www.rfc-editor.org/info/rfc8174>.

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   [RFC8402]  Filsfils, C., Ed., Previdi, S., Ed., Ginsberg, L.,
              Decraene, B., Litkowski, S., and R. Shakir, "Segment
              Routing Architecture", RFC 8402, DOI 10.17487/RFC8402,
              July 2018, <https://www.rfc-editor.org/info/rfc8402>.

   [RFC8655]  Finn, N., Thubert, P., Varga, B., and J. Farkas,
              "Deterministic Networking Architecture", RFC 8655,
              DOI 10.17487/RFC8655, October 2019,
              <https://www.rfc-editor.org/info/rfc8655>.

   [RFC8938]  Varga, B., Ed., Farkas, J., Berger, L., Malis, A., and S.
              Bryant, "Deterministic Networking (DetNet) Data Plane
              Framework", RFC 8938, DOI 10.17487/RFC8938, November 2020,
              <https://www.rfc-editor.org/info/rfc8938>.

   [RFC8964]  Varga, B., Ed., Farkas, J., Berger, L., Malis, A., Bryant,
              S., and J. Korhonen, "Deterministic Networking (DetNet)
              Data Plane: MPLS", RFC 8964, DOI 10.17487/RFC8964, January
              2021, <https://www.rfc-editor.org/info/rfc8964>.

   [RFC8986]  Filsfils, C., Ed., Camarillo, P., Ed., Leddy, J., Voyer,
              D., Matsushima, S., and Z. Li, "Segment Routing over IPv6
              (SRv6) Network Programming", RFC 8986,
              DOI 10.17487/RFC8986, February 2021,
              <https://www.rfc-editor.org/info/rfc8986>.

   [RFC9055]  Grossman, E., Ed., Mizrahi, T., and A. Hacker,
              "Deterministic Networking (DetNet) Security
              Considerations", RFC 9055, DOI 10.17487/RFC9055, June
              2021, <https://www.rfc-editor.org/info/rfc9055>.

   [RFC9550]  Varga, B., Ed., Farkas, J., Kehrer, S., and T. Heer,
              "Deterministic Networking (DetNet): Packet Ordering
              Function", RFC 9550, DOI 10.17487/RFC9550, March 2024,
              <https://www.rfc-editor.org/info/rfc9550>.

Authors' Addresses

   Balazs Varga (editor)
   Ericsson
   Budapest
   Magyar Tudosok krt. 11.
   1117
   Hungary
   Email: balazs.a.varga@ericsson.com

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Internet-Draft                 SRv6 DetNet                 December 2024

   Ferenc Fejes
   Ericsson
   Budapest
   Magyar Tudosok krt. 11.
   1117
   Hungary
   Email: ferenc.fejes@ericsson.com

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