State of Packet Optical Integration

1. State of Packet Optical Integration Valéry Augais, Office of the CTO 24 June 2015 State of Packet Optical Integration
2. Who are we? 01 24 June 2015 State of Packet Optical Integration 2
3. Underpinned by an unrivalled network, data centre services and enterprise cloud platform footprint - 168,160 km of LDN, metro fibre and subsea & terrestrial leased capacity connecting 28 countries across 3 continents. - 205 connected cities; Metropolitan area networks in 47 cities - 22,500+ buildings directly connected - Single end to end SLA - Consistent user experience - Single view of service activity and performance - Ability to rapidly change your network and IT services as business needs change - 24/7 operational management 24 June 2015 State of Packet Optical Integration 3
4. Underpinned by an unrivalled network, data centre services and enterprise cloud platform footprint - 168,160 km of LDN, metro fibre and subsea & terrestrial leased capacity connecting 28 countries across 3 continents. - 205 connected cities; Metropolitan area networks in 47 cities - 22,500+ buildings directly connected - Single end to end SLA - Consistent user experience - Single view of service activity and performance - Ability to rapidly change your network and IT services as business needs change - 24/7 operational management 24 June 2015 State of Packet Optical Integration 4 168k+ LDN, metro fibre and subsea & terrestrial leased capacity 29 Carrier neutral Colt owned and / or managed data centres 500+ Network to Network interfaces 20k+ Buildings directly connected 205 Cities connected 28 Countries 25k+ Customers 5k+ Employees 16 Languages supported by 24/7 customer service 50+ Industry awards 521 Colt-connected data centres 3 Continents
5. What was the vision a few years ago? 02 24 June 2015 State of Packet Optical Integration 5
6. Reference architecture in the metro and core 6 Business customers only Enterprise Wholesale (SP, CP) Media and government Site typology Technical nodes (1 to 5) Data centres (0 to 3) 3rd party sites CH, CO, PoP (10 to 10s) Customer premises (100s to 1000s) Access medium Fibre (ring topology) Copper (ULL) Metro technology Carrier Ethernet (packet) C/D-WDM (metro core) Core technology D-WDM, OTN, MPLS Colt Fibre Leased Capacity MAN with Data Centre MAN Central Office, Off-net PoP, POI Customer Premises ULL Copper I/Cs and NNIs Core Metro Core Customer Premises
7. Network layer integration – Historical situation 24 June 2015 State of Packet Optical Integration 7 L2 packet core (MPLS) L3 packet core (MPLS) L3 service L3 CPE IP services over Ethernet access (metro) Ethernet services (metro & inter-metro) L2 access & aggregation (Ethernet) L3 PE L2 PEL2 service L2 CPE L2 CPE L2 service IP NNI • Operations • Architecture Simplification • Service unit costs • Lead times • Hybrid L2-L3 VPN Product• Reduced CAPEX • Reduced OPEX Cost Pre-2012
8. Inter-metro Core Network layer integration – Packet optical case Merging the packet and optical hardware layers in the core Example with tier-1 metro but applicable to most tiers 24 June 2015 State of Packet Optical Integration 8 AN2 AN1 AN2 AN1 Access Aggregation Edge Metro 1G/10G 1G/10G P1 P2 Optical core (OTN & D-WDM) O1 O2 L2 CPE L3 CPE L2 CPE PE1 PE2 AG1 AG2L2 CPE L2 CPE
9. Network layer integration – Packet optical case Merging the packet and optical hardware layers in the core Example with tier-1 metro but applicable to most tiers 24 June 2015 State of Packet Optical Integration 9 AN2 AN1 AN2 AN1 Access Aggregation Edge Metro 1G/10G 1G/10G L2 CPE L3 CPE L2 CPE PE1 PE2 AG1 AG2L2 CPE L2 CPE Packet optical core (MPLS, OTN & D-WDM) PO1 PO2 Inter-metro Core
10. Inter-metro Core Network layer integration – Packet optical case Merging the packet and optical hardware layers in the core Example with tier-1 metro but applicable to most tiers 24 June 2015 State of Packet Optical Integration 10 AN2 AN1 AN2 AN1 Access Aggregation Edge Metro 1G/10G 1G/10G P1 P2 Optical core (OTN & D-WDM) O1 O2 L2 CPE L3 CPE L2 CPE PE1 PE2 AG1 AG2L2 CPE L2 CPE Packet optical core (MPLS, OTN & D-WDM) PO1 PO2 • Multi-layer switching platform – WDM (colour-less, direction-less) – OTN – Packet • OTN switching – Fill-in the high speed 100G waves • Packet switching – MPLS switching (LSR) – CP protocols (IS-IS, OSPF, TE, LDP, RSVP) – No LER (VPN, VPLS, GRE, MC), no BGP Inter-metro Core
11. Network layer integration – Initial design thoughts Network design considerations L2 and L3 services integrated on the same physical infrastructure but kept logically separated through the use of dedicated VLANs ― Service QoS characteristics uncompromised thanks to no queue sharing (8xL2 queues + 8xL3 queues) Key protocols for L2 and L3 services No mandatory requirement of MPLS-TP for L2 services ― To start with MPLS properly tuned seen good for the job (OAM included) ― … but over time MPLS-TP possibly useful for service assurance activities Scope of packet transport ― Ethernet & IP data services only, no Circuit Emulation Services for TDM & OTN ― Only sub-1Gbps services (back in the days of 10Gbps packet switch ports) 24 June 2015 State of Packet Optical Integration 11 Functions L2 services L3 services IGP Path computation Topology discovery Path creation OSPF NMS/OSS based OSPF-TE (booked bandwidth) ERO + RSVP-TE IS-IS IGP (core) IGP IGP + LDP Quoted from 2012
12. What are the state of the industry and the diversity of SP use cases? 03 24 June 2015 State of Packet Optical Integration 12
13. State of packet optical in the industry With a focus on the MPLS switching case 24 June 2015 State of Packet Optical Integration 13 Packet optical & MPLS switching Our packet and optical bits run best with hardware separation System vendors Operators Colt stakeholders Industry forums Networks only need a centralised CP based on openflow (ONF) Our main customers prefer status quo Our packet and optical teams must stay administratively separate Other use cases are top of list Great case and right on-time for Next Gen optical core (100G) We fully support but cannot commit yet We lack packet or optical expertise
14. The diversity of service provider use cases Diversity well captured in Packet Optical Convergence A multi-operator joint WP led by Telefonica and published in 2014 Data plane integration as per IP over WDM Pluggable tunable CFP optics on routers Multi-layer control plane integration models: UNI, E-NNI, peer, etc. From more to less overlay Other multi-layer integration aspects: resilience, planning and management Shared mesh protection, SLA management, resource optimisation, etc. Ethernet switching-enabled optical core Variant of MPLS switching LSR router by-pass Optical express equivalent in the electrical domain Network layers of consideration Metro access, metro core or core 24 June 2015 State of Packet Optical Integration 14
15. What are the various routes taken? 04 24 June 2015 State of Packet Optical Integration 15
16. Regular customer sites Packet optical in the core 24 June 2015 State of Packet Optical Integration 16 AN2 AN1 AN2 AN1 Access Aggregation Edge Metro 1G/10G 1G/10G Inter-metro Core L2 CPE L3 CPE L2 CPE AG1 AG2L2 CPE L2 CPE PE1 PE2 P1 P2 Optical core (OTN & D-WDM) O1 O2 100Gbps packet 2-3Tbps highly reliable packet nodes Collapsing the PE & P packet layers Interim alternative to packet optical
17. Regular customer sites Edge Packet optical in the core 24 June 2015 State of Packet Optical Integration 17 AN2 AN1 AN2 AN1 Access Aggregation Metro 1G/10G 1G/10G L2 CPE L3 CPE L2 CPE AG1 AG2L2 CPE L2 CPE Inter-metro Core 100Gbps packet PE/P1 PE/P2 Optical core (OTN & D-WDM) O1 O2 2-3Tbps highly reliable packet nodes Tier-2 cities AG collapsed with PE & P When scale issue in the long term 1. Activate packet-optical 2. Deploy dedicated P hardware L2/L3-integrated queues but still separate CPs • L2: OSPF & RSVP-TE • L3: IS-IS and LDP Collapsing the PE & P packet layers Interim alternative to packet optical
18. Regular customer sites Edge Packet optical in the core 24 June 2015 State of Packet Optical Integration 18 AN2 AN1 AN2 AN1 Access Aggregation Edge Metro 1G/10G 1G/10G Inter-metro Core L2 CPE L3 CPE L2 CPE AG1 AG2L2 CPE L2 CPE PE1 PE2 P1 P2 Optical core (OTN & D-WDM) O1 O2 Inter-metro Core 100Gbps packet PE/P1 PE/P2 Optical core (OTN & D-WDM) O1 O2 2-3Tbps highly reliable packet nodes Tier-2 cities AG collapsed with PE & P When scale issue in the long term 1. Activate packet-optical 2. Deploy dedicated P hardware L2/L3-integrated queues but still separate CPs • L2: OSPF & RSVP-TE • L3: IS-IS and LDP Collapsing the PE & P packet layers Interim alternative to packet optical 16 cities live to date 3 tier-1 and 13 tier-2
19. The metro case with 3rd-party key business sites (DC & CH) 24 June 2015 State of Packet Optical Integration 19 Edge AN2 AN1 Access Aggregation Metro 100Gbps packet PE/P1 PE/P2 Small business site (tier-3) Typical business site (tier-1 & 2) L2 & L3 services @ 100Mbps & 1/10Gbps 10G L2 CPE L2 CPE AN1 AN2 AG1 AG2 Colt node(s) Nx10Gbps over P2P passive C-WDM Building primarily on 100G packet access Leaving WDM for smallest sites only
20. The metro case with 3rd-party key business sites (DC & CH) 24 June 2015 State of Packet Optical Integration 20 Edge AN2 AN1 Access Aggregation Metro 100Gbps packet PE/P1 PE/P2 Small business site (tier-3) Typical business site (tier-1 & 2) L2 & L3 services @ 100Mbps & 1/10Gbps 10G L2 CPE L2 CPE AN1 AN2 AG1 AG2 Colt node(s) Nx10Gbps over P2P passive C-WDM Building primarily on 100G packet access Leaving WDM for smallest sites only 125 top DC/CH sites across EU and APAC 50 in EU by year-end and 75 in APAC today With rapid service turn-up and bandwidth changes (5days) Besides this, direct access to 560 vendor neutral sites
21. vCPE for Internet Pre-NFV PE-based Multi-vendor Single per platform component QoS alignment in the metro DSCP-PCP mapping, queue sharing vCPE for IP-VPN Pre-NFV PE-based Edge integration Core integration Technical capability Core integration Migration of first cities Core integration 100G packet Next Gen optical core 100G coherent Achievements and future plans 24 June 2015 State of Packet Optical Integration 21 2014 2013 2015 2016 Multi-vendor next Per component (CPE, etc.) Core integration Next enhancements (single IGP, dynamic L2 core, packet-optical, SR) SDN in the WAN Customer experience
22. Summary 05 24 June 2015 State of Packet Optical Integration 22
23. Summary Tactical design deployed due to LSR-enabled optical core feature missing But feature still very interesting to efficiently solve scalability issues in the future Leveraging packet transport and statistical multiplexing No WDM to connect regular customer sites and typical business sites ― Only to smallest business sites (with P2P passive C-WDM) Packet platform ready to support sub-10Gbps services End-to-end from access through core Moving next to SDN-type of customer services NaaS, bandwidth flexing, bandwidth calendaring, etc. made available through customer portal & customer API and turned up virtually instantly 24 June 2015 State of Packet Optical Integration 23
24. Thank you For your time [email protected] 24 June 2015 State of Packet Optical Integration 24