Anticipating the future
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1 Anticipating the future End to End Packet Optical Architecture for Convergent Network Modernization. David Bianchi June 2016
2 What s the problem?
3 Smooth migration or overnight swap? Traffic is Growing & Traffic is Growing & Dynamic Dynamic Transport Capacity Planning Transport Capacity Challenges Planning Challenges SONET/SDH EoL SONET/SDH EoL EPL VoD E-LAN EPL E-LAN VoD Business Business Ethernet Ethernet IPTV IPTV EVPL EVPL Service Diversity Service Diversity L3VPN L3VPN Mobile Mobile Backhaul Backhaul DCI L2VPN FTTx HSI DCI L2VPN FTTx HSI CapEx CapEx OpEx ARPU ARPU How to Pay for it? How to Pay for it? OpEx Expenses Revenue Expenses Revenue SONET/SDH SONET/SDH MPLS-TP MPLS-TP OTN 100 Gig OTN 100 Gig IP/MPLS IP/MPLS DWDM GMPLS DWDM GMPLS Technology Confluence Technology Confluence WSON NFV WSON SDN NFV SDN
4 Applications What did SDH do? Mobile Leased line Corporate Utility Microwave links Railways E1 E1/E3/STM1 E1/STM1 STM1/STM4 E1/E3/STM1 PDH / SDH Aggregation Hands off ADM STM4 STM16 SNCP Ring ADM DXC DXC STM-64 Network DXC POS DC E1/STM1 FCoS ADM BSC / MSC /RNC Landing stations STM16/STM64 Packet Network
5 Are you willing to give up something in the name of innovation?
6 What you can t give up no compromise FCAPS & OAM Standard & known PDH Interfaces E1 / E3 Resiliency 50ms SDH Interfaces STM-1 to STM-64 Graceful hands off Customer preserve Predictability Reliability Traffic & bandwidth control Smooth migration No overnight swap Technology agility Multi-protocol Transport friend footprint ETSI Mechanics Density / Scalability / Diversity Network Management E1 ports #? Convergent to SDN
7 So what to do?
8 How to move away from SDH? Circuit Emulation Packet network Expensive? Theoretical? Big Opex investment? Unsure TCO? Present deployments only played with E1 and/or STM1 links
9 Is PMO on CEM enough? Now Missing E1, E3, STM1 (now on STM4) Encapsulation Unassured protection High bit rate CEM (STM16, STM64) Scalable packet protection Bandwidth management
10 Circuit Emulation (CEM) Pseudowire Identifier AIS and RDI Generation on Remote End Transport between CEM Nodes PSN Header PW Mux Control Word Parts of TDM Frame TDM Frames CEM capable Packet Node CEM Packets CEM capable Packet Node TDM Frames Four Different Modes: 1. SAToP = Frame agnostic DS1/DS3 (RFC 4553) 2. CESoP = Frame aware NxDS0 (RFC 5086) 3. CEP = SDH Container (VC12, VC4, VC4-Xc) based (RFC 4842) 4. TSoP = Full SDH Frame + TOH (not a Standard!) Eureka! Ingress CEM Node samples TDM Frames for Packetization Egress CEM Node collects Packets and reconstructs TDM Frames
11 SDH/CEM Service Provisioning Node A Node Z STS or VT1.5 Bi-directional MPLS Tunnel (LSP) STS or VT1.5 CEM VC4 or VC12 Access VC Controller (UNI) Cross Connect PW Uplink Ethernet Port (NNI) Uplink Ethernet Port (NNI) PW Cross Connect CEM VC4 or VC12 Access VC Controller (UNI) Pseudowire (PW) Mapping Mapping Touch Point #1 A Path with Constraints Z Touch Point #2 Provisioning Tool Control Plane (RSVP-TE) for bir-directional Tunnel (LSP) Setup HO High Order (VC4, VC4-Xc, up to 64) LO Low Order (VC12)
12 Low Order Capacity (LO) High Order Capacity (HO) Supported CEM Circuit Types STM-64 Port AUG-64 4x CEP SDH Circuit Emulation over Packet (RFC4842) SAToP Structure agnostic TDM over Packet (RFC4553) STM-16 Port AUG-16 4x VC-4-16c VC-4-16c CEM Circuit (CEP) STM-4 Port AUG-4 4x VC-4-4c VC-4-4c CEM Circuit (CEP) AU-4 VC-4 VC-4 CEM Circuit (CEP) STM-1 Port 3x TUG-3 VC-3 VC-3 CEM Circuit (CEP) 7x E3 E3 CEM Circuit (SAToP) M13 28x E1 E1 CEM Circuit (SAToP) TU 3x VC-12 E1 E1 CEM Circuit (SAToP) VC-12 CEM Circuit (CEP)
13 Here you go
14 Smooth Migration What does will SDH do? Mobile Leased line Corporate Utility Microwave links Railways Landing stations E1 E1/E3/STM1 E1/STM1 STM1/STM4 E1/E3/STM1 STM16/STM64 CEM Capable NE ADM STM4 STM16 SNCP Ring ADM Hands off CEM Capable NE Convergent platform or Router Packet / OTN / DWDM Network Full IP/MPLS network CEM Capable NE Ethernet DC E1/STM1 Ethernet Convergent platform or Router BSC / MSC /RNC DWDM
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