IEEE 1904.1 (SIEPON) Architecture and Model


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Presentation from SIEPON Seminar on 20 April in Czech Republic, sponsored by IEEE-SA & CAG. Opinions presented by the speakers in this presentation are their own, and not necessarily those of their employers or of IEEE.

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IEEE 1904.1 (SIEPON) Architecture and Model

  1. 1. IEEE 1904.1 (SIEPON)Architecture and Model Marek Hajduczenia ZTE Corporation
  2. 2. EPON deployment scenarios Business FTTBiz Cellular Backhaul RiserClock Transport / 1588 v2 ONU MDU EPoC CLT Wiring Closet / Business ONU OLT •Coax Basement MEF over ONU EPON Splitter Fiber FTTN MDU Outside Splitter Cabinet Home ONU FTTH Networking ONU ONU (SFU) HGW Coax / xDSL GE EPON SFU: 1x GE / 4FE SFU: 4FE + 2x POTS STBSFU: Home Gateway MII or Coax Business 2
  3. 3. Service-layer interoperability …• IEEE 802.3 provides solid PHY standard guaranteeing interoperability at physical, MAC and MPCP/OAM levels• Service layer interoperability was enforced by individual operators, defining their own service layer requirements on top of 802.3 specs (e.g. CTC, NTT, KT etc.)• This approach leads to an explosive growth in number of parallel and similar specifications, leading to problems for – operators: equipment has to be customized to their needs, thus becomes more expensive; and – vendors: need to support multiple sets of options, leading to longer development cycles, increased manufacturing cost and incremental software complexity for management platforms• Clearly, this approach is not scalable to a larger number of carriers and prevents smaller operators from adopting EPON as transport solution for their access networks• A solution is needed to facilitate adoption of EPON by creating service layer interoperability standard 3
  4. 4. Various operators – one standard Operator O B pe ra EPON is being used in to C• r B ru e B various environments fo SL F sin nvi S g m s vi O ts Ope SI in e ab R g ro nm in D t en EP en eq E n en C s ir L ro N Operator – Some would like to O u u le ui PO me D for Req ab re N n rator D m C manage EPON as part A en in ts of DOCSIS network t – Some would like to IEEE 802.3ah manage EPON like (1G-EPON) DSL network• Many external specifications IEEE 802.3av (10G-EPON) supply requirements relevant to EPON technology – BBF (WT-200) r G ato O pe E r – CableLabs (DPoE) pe ra O to – Also, deployed solutions reflect r Operator different regulatory or national F environments• The goal of SIEPON project is to address these diverse requirements in a consistent and unified way – Improve system-level interoperability by specifying a common management and provisioning framework. 4
  5. 5. Main focus of SIEPON• SIEPON provides interoperable service-layer specifications for the following features: – frame operations performed on ONU and OLT, including VLAN modes, tunneling modes and multicast distribution – bandwidth reporting and QoS enforcement – power saving – line and device protection and monitoring functions – alarms and warnings, including set and reset conditions and delivery mechanisms – authentication, privacy and encryption mechanisms – maintenance mechanisms, including software update, ONU discovery and registration processes – extended management (eOAM), including definition of protocol requirements, message format and their exchange sequences for specific functions (e.g., during authentication)• These functions are defined in a sets (packages), which eliminate the need for options, facilitating development of compliant equipment and testing 5
  6. 6. SIEPON coverage (I)• SIEPON builds on top of 802.3 EPON specifications – There are no changes to physical layer, MAC and MAC Control specifications developed in 802.3 for 1G-EPON and 10G-EPON – SIEPON defines operation of MAC Client, OAM Client, MAC Control Client and Operation, Administration, and Management functions – SIEPON scope extends between NNI and UNI (when OLT and ONU do not include service- specific functions) or OLT_CI and ONU_CI (when there are service-specific functions included – see next slide) Reference: Figure 5-1, IEEE P1904.1, draft D2.3 6
  7. 7. SIEPON coverage (II)• SIEPON does not specify operation and requirements of any service- specific functions – VoIP (SIP), HGW router, POTS, CES, etc., are outside the scope of this standard – Such functions are typically managed using existing L3 protocols – SIEPON definitions do not prevent or break in any way operation of such protocols, maintaining transparency of their operation Reference: Figure 5-1, IEEE P1904.1, draft D2.3 7
  8. 8. OLT Architecture (1+ Line OLTs) ODN IEEE P1904.1, draft D2.3 Reference: Figure 5-7 1904.1 802.3 8
  9. 9. ONU Architecture (1+ Line ONU) ODNIEEE P1904.1, draft D2.3 Reference: Figure 5-4 802.3 1904.1 9
  10. 10. Line, Client, Service ONU / OLT …• SIEPON clearly delineates bounds of specification – Line device = functions defined in 802.3, providing a set of standardized primitives for interaction with MAC Client, MAC Control Client and OAM Client, Line device cannot establish connectivity with link peer without support of functions defined by SIEPON, – Client device = Line device + additional functions and processes specified in SIEPON; Client device is capable of establishing bidirectional connectivity with link peer, sending and receiving user frames (with necessary processing), participating in MPCP and OAM processes (Discovery & Registration, OAM Discovery, etc.), – Service device = Client device + additional, service-specific functions outside of the scope of this standard, 10
  11. 11. MAC Client Reference: Figure 6-1, IEEE P1904.1, draft D2.3 SIEPON provides unified Legend provisioning model for the MAC Path for data frames Block controls connectivity Client data path: Path for control Block controls performance – [C] = Classifier Path for management – [M] = Modifier – [PS] = Policer/Shaper – [X] = CrossConnect Policer/Shaper [PS] CrossConnect [X] – [Q] = Queues Scheduler [S] Classifier [C] Modifer [M] Queues [Q] Output [O] [S] = Scheduler Input [I] – Each functional block has a dedicated set of functions (examples follow): – Classifier: identifies frames and controls their path through MAC Client Provisioning / Alarms & Status – Modifier: operations on frames, changing VLAN tags, colour marking a) Functional blocks etc., as provisioned – Scheduler: polls queues for frames and delivers them to Output port. [I] [C] [M] [PS] [X] [Q] [S] [O] b) Compact representation 11
  12. 12. SIEPON and BBF TR-200 modelReference: Figure 5A-1, Figure 5A-2, IEEE P1904.1, draft D2.3  SIEPON coverage compared with BBF TR-200 with a single- customer ONU (SFU) • SIEPON coverage compared with BBF TR-200 with a multi- customer ONU (MDU) 12
  13. 13. SIEPON and MEF modelReference: Figure 5A-3, IEEE P1904.1, draft D2.3 • SIEPON coverage versus MEF 10.2 architecture, spanning between E-NNI / I-NNI and UNI interfaces 13
  14. 14. Conclusions• SIEPON addresses multiple requirements from different operators and varied markets, requiring flexibility in the architecture model• The adopted model may address any new requirements brought in the future – Individual functions are separated into MAC Client, OAM Client, MAC Control Client and OAM – Individual clients communicate with each other, sharing variables (when needed) and device status• SIEPON definitions are clearly delineated, building on top of 802.3 and 802.1 specifications, while not affecting any existing L3 management protocols for service-specific functions (VoIP, POTS, CES etc.)• SIEPON coexists, rather than competes, with MEF 10.2 and BBF TR-200 networking models, complementing them when EPON is used as access network transport technology 14
  15. 15. Thanks!