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Packet Optical Transport (POT) · PDF file 2/3/2009  · 5 © 2009 ADVA Optical Networking. All rights reserved. ADVA confidential. Packet Optical Transport (POT) Packet Optical Transport

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Text of Packet Optical Transport (POT) · PDF file 2/3/2009  · 5 © 2009 ADVA Optical...

  • Packet Optical Transport (POT)

    Fred Ellefson, 2/3/2009

  • © 2009 ADVA Optical Networking. All rights reserved. ADVA confidential. 2

    Trends and challenges Bandwidth growths and cost reduction

      Annual Internet traffic growth rates: ~ 50-60% US, world

     OPEX/CAPEX reduction  Cost per bit transport (optical): ~ 20% reduction per year

    Continuous scaling and cost reduction:   40G/100G, highly tolerant, ROADMs, …   Reach extension (single, multi-span), eliminate need for offices, …   Ease-of-use, …

    Video enabled

    B an

    dw id

    th

    (multiple web services, millions of users)

    Example: Facebook 73 million active users 1+ million new users/week #1 photo site on Internet 20,000 application

    Source: University of Michigan, end of 2007

  • © 2009 ADVA Optical Networking. All rights reserved. ADVA confidential. 3

    Network/Ethernet evolution

    Best Effort Ethernet

    Carrier Ethernet

    Ethernet over any media

     Ethernet as a service  Ubiquity, OAM & SLAs key

    challenges

     EoSONET, EoTDM, EoDSL, etc

    Any media over Ethernet

     Fiber dominant in core, regional & campus  Transport requirements added to Ethernet

     Frame relay, ATM, private line carried over Ethernet

    Ethernet as Transport

    Early adopters

    Mass market

    Total domination

  • © 2009 ADVA Optical Networking. All rights reserved. ADVA confidential. 4

    Ethernet & transport evolution

    Ethernet evolves to replace SONET

    Optical layer

    SONET Layer

    Ethernet Layer

    IP Layer

    Optical layer

    Ethernet Layer

    IP Layer

    Transport requirement

    Ethernet as service

    Ethernet as Transport

    Operations, admin. & maintenance (OAM)

    IP Ping, echo, traceroute

    full set including SLA monitoring (802.1ag, Y.1731, RFC-2544)

    Protection switching LAG/STP 50msec (G.8031)

    Synchronization No Synchronous Ethernet (G.8261/2/4)

    Services supported IP/Ethernet IP/Ethernet + T1, T3, FR, ATM, etc (PWE3)

    Access topologies Point to point 1+1, tree, ring (G.8031 & G.8032)

    Traffic engineering Switched mesh Provisioned (PBB-TE, MPLS-TP)

    Control Plane None GMPLS for Ethernet Label Switching (GELs)

  • © 2009 ADVA Optical Networking. All rights reserved. ADVA confidential. 5

    Packet Optical Transport (POT)

      Packet Optical Transport is the combination of wavelength and EVC (VLAN) level switching   Provides high order and low order switching similar to SONET

      Optimizes fill within transport network

      Enables separating users/applications in either the optical or EVC (VLAN) domain

      Reduces O-E-O conversions to reduce capital and energy costs

    + = ROADM

    WDM transport Layer 2 switch Packet Optical

    Transport (POT)

  • © 2009 ADVA Optical Networking. All rights reserved. ADVA confidential. 6

    Layered traffic management

    VT1.5

    STS-1

    Legacy TDM (SONET/SDH)

    NGN transition

    Low order

    High order

    EVC/VLAN

    Wavelength

    Packet Optical Transport (POT)

    ROADM

    L2 card

    Highly efficient Carrier Ethernet transport

    POT

  • © 2009 ADVA Optical Networking. All rights reserved. ADVA confidential. 7

    More granularity

    Duct Cable Fiber Wavelength Pipe Subpipe

  • © 2009 ADVA Optical Networking. All rights reserved. ADVA confidential. 8

    Pipe vs. sub-pipe aggregation

    (Full) pipe aggregation

    10 * GE port into 10G uplink

    Sub-pipe aggregation

    20 * GE port (partly filled) into 10GE uplink

    1 2 4 3 5 6

    7 8 9 10

    12

    1 2 3 4 5 6 7

    8 9 10 11 13 14

    15 16 17 18 19 20

    1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

    “only” aggregation

    to be used with filled pipes

    aggregation + consolidation

    to be used with just partially filled pipes

  • © 2009 ADVA Optical Networking. All rights reserved. ADVA confidential. 9

    EVC/VLAN switching

    :

    GbE links 10GbE links

    L2 C

    ard

    1 2

    20

    1

    2

    1 GbE 10GbE

    L2 C

    ard

    1 2

    20

    1

    2

    1 GbE 10GbE

    :

    L2 Card

    10GbE 10GbE

    1 1

    2 2

    EVC/VLAN cross-connection

    Wavelength and VLAN switching simplifies nodal design

  • © 2009 ADVA Optical Networking. All rights reserved. ADVA confidential. 10

    Today

    End users eg RESNET, researchers, labs, classrooms etc

    Campus network

    Aggregation layer eg Regional Optical Network (RON)

    R&E backbone eg Internet2

    GE pipes only

  • © 2009 ADVA Optical Networking. All rights reserved. ADVA confidential. 11

    POT solution

    “VLAN/EVC Cross-Connect”

    10GE pipes

    End users eg RESNET, researchers, labs, classrooms etc

    Campus network

    Aggregation layer eg Regional Optical Network (RON)

    R&E backbone eg Internet2

    “VLAN/EVC Mux”

    “VLAN/EVC Cross-Connect”

  • © 2009 ADVA Optical Networking. All rights reserved. ADVA confidential. 12

    End-to-end protected services

     Reconfigurable optical core network  CIR trails set up through network  Protection managed by edge device  Performance monitoring & OAM functions

    provided by edge device

    S-VLAN 1

    S-VLAN 2 (protection)

    CORE ITU-T G.8031 or LAG

  • © 2009 ADVA Optical Networking. All rights reserved. ADVA confidential. 13

    Business case (Why)

      EVC/VLAN based networking / aggregation & transport is more efficient than full pipe / circuit based transport

      Less overhead, less unused capacity even overbooking possible

      Lower cost than SONET/SDH

      More flexible than pipe or wavelength based connectivity

      …

  • © 2009 ADVA Optical Networking. All rights reserved. ADVA confidential. 14

    Logical connection

    OADM ring plus Ethernet switching

    L2 switch

    L2 switch

    L2 switch

    L2 switch

    Eth Aggr. 2

    Cost analysis components: 10 Gbit/s transponder

    Cost analysis components: L2 switch

    Cost analysis components: 10 Gbit/s IF module,

    transceiver

    DSLAM

    Eth

    Aggr. 1

  • © 2009 ADVA Optical Networking. All rights reserved. ADVA confidential. 15

    Logical connection

    OADM ring with integrated L2 card (POT)

    L2 card

    1 ..... 20

    Cost analysis components: L2 card

    Cost analysis components: 10 Gbit/s XFP

    FRN Eth Aggr. 2

  • © 2009 ADVA Optical Networking. All rights reserved. ADVA confidential. 16

    External L2 switch vs. L2 card

    0,00% 10,00% 20,00% 30,00% 40,00% 50,00% 60,00% 70,00% 80,00% 90,00%

    100,00%

    external L2 switch integrated L2 card (POT)

    Transponder Transceiver 10G IF module L2 switch

  • © 2009 ADVA Optical Networking. All rights reserved. ADVA confidential. 17

    CAPEX / OPEX analysis

      WDM with integrated Ethernet aggregation saves   Network elements (= number of boxes)   Interfaces   Power consumption   Space consumption

      … and reduces   NMS effort   OPEX

      … and increases   MTBF   Network availability/reliability

  • © 2009 ADVA Optical Networking. All rights reserved. ADVA confidential. 18

    POT deployment drivers

    Source: Infonetics, 2008

    %

  • © 2009 ADVA Optical Networking. All rights reserved. ADVA confidential. 19

    POT market forecast

    Source: Heavy Reading, Packet-Enabled Optical Networking Quarterly Market Tracker, June 2008

    $M

  • © 2009 ADVA Optical Networking. All rights reserved. ADVA confidential. 20

    Summary

     Marriage of optics and Ethernet (VLANs) is synergistic – provides layered management

      POT offers savings in OPEX and CAPEX while increasing reliability

      POT will be a key technology for future R&E network designs

  • Thank you

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