Colt sdn-and-nfv-experience-lernings-and-future-plans

© 2015 Colt Technology Services Group Limited. All rights reserved.

Colt’s SDN & NFV: Experience, Learnings and Future PlansJanuary 2015Javier BenitezStrategy & Architecture, Business Strategy & Development

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Agenda

Colt’s SDN/NFV Strategy

DC Network Virtualization

NFV Use Cases

WAN SDN

MBH & MNO Use Cases

Summary

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Colt – The Information Delivery Platform

• Business customers only !

• 28 countries / 3 continents / 205 connected cities / 47 MANs

• 47,600km EU Fibre network / 120,000 Subsea

• 29 Colt owned data centres / 22,000 connected buildings

• 500+ NNIs / customers in 85 countries

• 520+ connected third party DCs

• MEF / ONF / NFV Member

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Colt vision: IT & Network Integration

The integration of the network and IT platforms from the service, technology, system and process point of view to offer innovative services, reduce provisioning time, automate end-to-end orchestration and offer truly combined network and compute services.

Network automation,

virtualisation, elasticity and

rapid innovation

Modular Carrier Ethernet

Integrated Networks

Next Gen Data Centre Fabric

SDN/NFV

SDN/NFV

SDN/NFVwill be the glue that binds the elements together

Key elements of Colt’s IT & Networking

Strategy

Investment programme

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Colt’s SDN/NFV Infrastructure Development

Network Functions

Virtualisation(NFV)

DC Fabric & Network

virtualisation(CCN)

DC Fabric• OpenFlow DC Fabric evaluation (2012, not mature enough)

DC Network virtualisation & Architecture: • SDN Overlay: L2-L4 DC Network Virtualisation & DC Architecture

WAN SDN

Live Feb’14

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Colt DC – Gen 3 vs Gen 4Gen 3

IP Core(Internet)

L3 PE(IP VPN)

L2 PE(L2 VPN)WAN

Access(traditionalEthernet)

Customer

Services

VLAN

Cust 1 Cust 2

Cust 2 Cust 3

Cloud Platform

Backup Management

Gen 4

IP Core(Internet)

L3 PE(IP VPN)

L2 PE(L2 VPN)

WAN

ModularMSP

Cust 3

Cloud Platform

Cust 2

Cust 1 Cust 2

SDN Overlay

Leaf (+ Overlay Gateway)

Spine

Leaf

Backup

Management

VXLAN

VLAN

SDN Controller

Overlay Gateway

SDN Orchestrator

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DC Fabric & Network

virtualisation(CCN)



WAN SDN

Live Feb’14

L3 CPE router virtualisation (pre-NFV, PE based)• virtualisation of the L3 CPE functionality (Internet access / IPVPN)

NFV: Formal Evaluation (RFI) & PoC in 2014 • vL3CPE / vDC Appliances (FW/LB) / vControl Plane (BGP RR)

Network Functions

Virtualisation(NFV)

Live Nov’12

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vL3CPE (Internet Access / IPVPN) – Definition

Customer

MSP / L2 CPE

M-MSP

Gen 4 DC

ComputeStorage

PhysicalCompute / Appliance

IP/MPLS(Internet/IPVPN)

Spine

Leaf

L3CPE

• Traditional Managed L3 services (Internet Access and IPVPN ) delivered with dedicated L3 CPE router

• vL3CPE means removing the L3 CPE router and delivering the functionality as Virtual network Functions

vCPEvCPE

vCPE

vCPE

vCPEvCPE

vCPE

PRE-NFV

NFV

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Pre-NFV vL3CPE: lessons learnt

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Lessons learnt

vCPE is complex !! QoS, NAT, security ??

Engineering

Our enterprise customerswill not like it !!

ProductManagement

I can’t configure thisservice !! The processdoesn’t work.

ServiceDelivery

I don’t know how to troubleshootthis service !!

ServiceOperations

Our inventorytool cannot representa virtual CPE …

IT

I can’t designthis service !!

Presales

Our customerswill want a discount !!Sales

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M-MSP

vL3CPE – the NFV chapter

Customer

MSP / L2 CPE

Gen 4 DC

VNF VNF

ComputeStorage


VNF

VNF

VNF


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• L3CPE functionality virtualised– Main target location: Colt

DC (NFV Platform / SDN Overlay)

– Optional additional location: L2 CPE (distributed NFV)

• Network Segment 1: – MSP (Ethernet) from

customer to DC• Network Segment 2

– DC Gen 4: SDN Overlay– DC Gen 3: traditional

Ethernet (Vlan) – Includes Service Chaining

• Network Segment 3:– MSP (Ethernet) from DC

to L3 service instance on the PE

VNF

VNF

Spine

Leaf

Leaf

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vDC Appliances (vFW, vLB) - Definition

M-MSP

Gen 4 DCNFV Compute

Storage PhysicalCompute / Appliance


Spine

Leaf

Leaf

• Traditional DC Solutions (both Colo & Cloud) deploy dedicated, per-customer FW and LB– In some cases Contextual

FWs are also used, shared across different customers

• vFW and vLB means removing dedicated FW & LB appliances router and delivering the functionality as Virtual network Functions

vFW vLB

vFW

IaaS Compute

Colo Cust 1

IaaSCust 2

FW

LB

LB FW

vLB

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vDC Appliances (vFW, vLB) - Setup

M-MSP

Gen 4 DCNFV Compute

Storage PhysicalCompute / Appliance


Spine

Leaf

Leaf

vFW vLB

vFW

IaaS Compute

Colo Cust 1

IaaSCust 2

vLB

• DC Appliance functionality virtualised– Target location: Colt DC

(NFV Platform / SDN Overlay)

• Network Segment – DC Gen 4: SDN Overlay– DC Gen 3: traditional

Ethernet (Vlan) – Includes Service Chaining

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vBGP Route Reflector – Definition

Customer

MSP / L2 CPE

M-MSP

Gen 4 DC

ComputeStorage



Spine

Leaf

Leaf

• Traditional BGP RR (Internet Access and IPVPN ) delivered with dedicated routers– Internet: embedded in IP

Core routers– IPVPN: dedicated,

centralised routers

• vBGP RR means removing the dedicated routers and delivering the functionality as Virtual network Functions

vRR vRR

BGP RR

BGP RR

iBGP

iBGP

iBGP

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vBGP Route Reflector – Setup

Customer

MSP / L2 CPE

M-MSP

Gen 4 DC

ComputeStorage



Spine

Leaf

Leaf

vRR vRR

• BGP RR functionality virtualised– Target location: Colt DC (NFV

Platform / SDN Overlay)• Network Segment 1

– MSP (Ethernet) from PE/P to DC

• Network Segment 2– DC Gen 4: SDN Overlay– DC Gen 3: traditional Ethernet

(Vlan) – Includes Service Chaining

• BGP Sessions – iBGP sessions both to create

full-mesh as well as to RR clients

• Design– All Address families in scope:

Internet/IPVPN/Multicast/IPv4/IPv6

– Centralised designed (LON/FRA/PAR) both for Internet and IPVPN

iBGP

iBGP

iBGP

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2

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DC Fabric & Network

virtualisation(CCN)



Live Feb’14

L3 CPE router virtualisation (PE based): NLI Project• virtualisation of the L3 CPE functionality (Internet access / IPVPN)

NFV: Formal Evaluation (RFI) & PoC in 2014• vL3CPE / vDC Appliances (FW/LB) / vControl Plane (BGP RR)

Network Functions

Virtualisation(NFV)

Live Nov’12

WAN SDN Network (Optical/Ethernet/IP):PoC/Field Trial Q1’15• Modular MSP (Integrated L2/L3 WAN Network)• End to end WAN network abstraction & full automation in a multi-

vendor, multi-layer environment• Flexible connectivity, i.e., ability to dynamically / on-demand change the

connectivity attributes of the service (BW, QoS profile, etc).

WAN SDN

Live Nov’13

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Building on top of Colt Modular MSP: Circuits/Bw/QoS on demand

Colt MSP

HN PEModular MSP

10G ring

1G ring Colt MSP

HNPEModular MSP

10G ring

1G ringColtLDN

Cyan

Customer Customer

Customer Colt OSS/BSS

Phase 1 (Live) : London, Frankfurt, Paris, Amsterdam, Brussels, Madrid, Barcelona, Hamburg, Berlin, Munich, Dusseldorf

Colt WAN SDN / PoC Q1’15

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WAN SDN Overlay Vision

L2/L3PCC

L2/L3PCC

L2/L3PCC

L2/L3PCC

WDMOTS

WDMOTS

WDM

WDM

L2

L2

L2

L2Implicit

Provisioning(GMPLS)

NMS Provisioning

MPLS/SR

L2/L3 Packet Optical Legacy

Ethernet

SDN Controller

Legacy Ethernet NMS

Topology Export: • BGP-LS (BGP Link State)

Provisioning - PCEP (Path Computation Element Protocol)- Segment Routing List

BusinessOrchestrator

NMS integration (API)

Set up circuit from A to BWith 1Gbps Bw

A B

PCC: Path Computation ClientSR: Segment RoutingOTS: Optical Transport Switch

Topology Export: • JSON, XMPP

Provisioning- OpenFlow

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Colt MNO/MBH Strategy & Proposition• Mobile traffic is shifting from Macro to Small Cells (SCs)

– Explosion of mobile data will lead to huge # of SCs deployed (typically in cities)

• Fibre preferred by MNOs for street level SCs connectivity– Carrier Ethernet & Dark Fibre options depending on the MNO model

• Colt brings small cells experience at International basis– Dense network to secure a quick roll out of services inside 47 Metropolitan cities – Mobile operators require backhaul and real estate to deploy their network– Colt has partnered to secure turn-key solution for these two requirements (20k+

turn-key locations already identified in 12 cities)– Colt has established a strong relationship with street asset owners

• Colt already delivered fibre based access connectivity up to 300 Mb/s – ready for LTE-Advanced- on sites located at street level

- Gaining experience in European capitals such as Amsterdam or Berlin- Using different Fibre connectivity, Ethernet /Dark Fibre, and different operational

models, lead either by 3rd party or the MNO directly

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Colt SC MBH Architecture – High Level Design

• Protected fibre rings of ~8 sites until DC that can host MNO Network Infrastructure.

• Resiliency provided by the ring topology and relying on protected path

• Colt CPE Modular MSP installed and pre-provisioned in street furniture or street cabinet

• Management of several flows to support several applications on the targeted site

Colt Backbone MNO Hub(Data Centre or Macro Site)

Fibre 10G

Colt Node

Pre-concentration

Main Ring Fibre 10GSub Ring

Fibre 1G

Sub Ring Fibre 1G

Sub Ring Fibre 1G

Sub Ring Fibre 1G

Independent services (e.g. 1x LTE Small Cell + 1x Public Wi-Fi)

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Colt’s SDN/NFV – MNO/MHB Use Cases

Scalability & Agility for MNO/MBH

Access Network

• Challenge: control the cost of the access network connectivity while exponential growth the mobile data traffic (mainly video) and multiplication of end points (due to small cells)

• SDN/NFV value-add:• Virtualise transport elements: vCPE / L4-L7 on demand (e.g. security)• Better Capacity Management: WAN on demand• Self configuration/optimization: WAN automation

Cloud-RAN / FrontHaul

Architecture

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E-Line for S1

L3 VPN (w/ L2 CPE) for X2

E-Line for S1

E-LAN (w/ L2 CPE) for X2

SC MBH Use Case

Evolved Packet Core

L2 CPE

backhaul MNO mobile coreMNO cell sites

small cell/eNB

L2 access &Aggregation(WAN SDN)

S-GW / MMEL2/L3 edge

NFVI

vFW

vCPE

Colocation Cloud (IaaS)

vLB

Colt DC

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Colt’s SDN/NFV – MNO/MHB Use Cases

Scalability & Agility for MNO/MBH

Access Network

• Challenge: control the cost of the access network connectivity while exponential growth the mobile data traffic (mainly video) and multiplication of end points (due to small cells)

• SDN/NFV value-add:• Virtualise transport elements: vCPE / L4-L7 on demand (e.g. security)• Better Capacity Management: WAN on demand• Self configuration/optimization: WAN automation

• Challenge: Transport huge capacity (variation) between pool of BBU’s (BaseBand Unit) and Radio units with very stringent latency (typ. 0,1 ms)

• SDN/NFV value-add:• FrontHaul Packet SDN: WAN on demand/automation• Colt’s NFVI platform for MNOs to implement NFV based BBU’s

Cloud-RAN / FrontHaul

Architecture

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Cloud RAN / FrontHaul Use Case

EPC

packet backhaulMNO super macro cell sites (BBU pools)

super eNB

L2 access &aggregation

L2/L3 edge

S-GWMME

small cell/eNB fibre and

L1 Ethernet(packet

WAN SDN?)

CPRI backhaulMNO cell sites MNOmobile core

L2 CPE

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Cloud RAN / FrontHaul Use Case

EPCL2 CPE

packet backhaulMNO NFV based (BBU pools)

L2 access &aggregation

L2/L3 edge

S-GWMME

small cell/eNB

CPRI backhaulMNO cell sites MNOmobile core

NFVI

BBU

BBU

Colocation Cloud (IaaS)

BBU

Colt connected DC

BBU

fibre andL1 Ethernet

(packet WAN SDN?)

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Summary• SDN and NFV technologies are maturing - few products are GA

(but typically 1.x)

• Consider the business transformation challenges !!

• We have delivered

– Data Centre SDN overlay – Modular MSP with SDN automation– Pre-NFV vL3CPE

• Coming next:

– NFV RFI & PoC (Q4’14-Q1’15): vL3CPE / vLB / vFW / vRR – WAN SDN PoC/Field Trial (Q1’15): L1 Optical / L2-L3 Packet / Inter-DC– FrontHaul Use cases PoC (under discussion)

© 2015 Colt Technology Services Group Limited. All rights reserved.

Thank you

www.colt.net

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