In this talk, Principal architects will share considerations in designing virtual infrastructure to deliver vCPE and vPE based services. The speakers will provide some background on service function chaining, service edge routing, Openstack clouds and discuss virtualized architectures that can solve Service Provider problems to achieve agility and richness of cloud based services
Exploring the Future Potential of AI-Enabled Smartphone Processors
Delivering Composable NFV Services for Business, Residential and Mobile Edge
1. OpenStack Summit | Barcelona, Spain
Delivering Composable NFV Services for
Business, Residential and Mobile Edge
Pere Monclus, CTO @ PLUMgrid
Azhar Sayeed, Telco Chief Architect @ Red Hat
3. • NFV, What, Why, How?
• What is the Problem?
• Composable NFV Services
• Help! Ideas
• Summary
Agenda
3
4. NFV, what, why, how?
Virtual Network Functions Evolution
4
• Optimized for each function
to maximize performance
• Slow to deploy & update
• Fragmented non-commodity
hardware, Vertical Design
• Physical install (per
appliance, per site)
Physical
• Standard high volume Hardware
• Independent Software Vendors
• Open Ecosystem
• Fast on-demand deployment & update
• Variable performance and support for optimization
Virtual Container-based
5. Realizing Value for Technology Providers
Jumpstarting an NFV ecosystem
5
MANAGEMENT
&
ORCHESTRATION
VIM
NFVi
SD-COMPUTE SD-NETWORK SD-STORAGE
VIRTUAL NETWORK FUNCTIONS
ECOSYSTEM
• Standardized Framework
• Proper definition of VNF
• Well understood Insertion approaches
• Well defined management interfaces
• Scale Out model
• Go to market
• Flexible delivery
• Choose & deploy from portfolio of options
• Shorter testing/deployment/upgrade
cycles
Towards a “Market place” of VNFs for the new wave
of SW Network Technology Providers
6. Realizing Value for Operators
Carrier Benefits
6
• Service Creation
• Introduction and monetization of new services
• From concept to production in short timeframes
• Operational Benefits
• Ease of automation and Increased deployment agility
• Scale Out architecture
• Visibility with monitoring and alerting
• Reliable (Self-healing, Highly Available, no SPOFs)
• Cost effective
• Multi-tenant
• Flexible
• Shortened GTM cycle
MANAGEMENT
&
ORCHESTRATION
VIM
NFVi
SD-COMPUTE SD-NETWORK SD-STORAGE
VIRTUAL NETWORK FUNCTIONS
ECOSYSTEM
Provide customers a richer set of services.
Enable a “Marketplace”
7. NFV most common use cases
Flexibility and openness enables innovation in many markets
vCPE/SDWAN
vPE
vEPC, vIMS
GiLAN
7
8. vCPE reference design
Customer Premise Equipment (CPE)
• Management intensive
• Rigid to changes in operational models
• performance limited
• static and immune to demand changes
Virtualizing the Customer Premise Equipment (vCPE)
• Use software implementation on general purpose hardware to
provide services to residential and business customers &
Moore’s law economies of scale
• Low overhead - centralized control and management - No
truck roll
• Performance can scale with the cloud
• Dynamic and flexible with ability to add and drop services
easily
Internet
NFV Cloud
8
9. vCPE reference design
Thin / Thick vCPE Model
9
Enterprise
Software Defined Central Office
NFVI - POP
Internet
Residential vCPE Enterprise vCPE
NFVO
SDN Controller
VNFM(s)
VIM
Residential
VM VM
13. Sizing the reference design
https://en.wikipedia.org/wiki/List_of_countries_by_number_of_households
Residential vCPE Infrastructure Sizing: Number of Servers
Residential
Households:
• China: 455.9 Million
• India: 248.4 Million
• Europe: 218.9 Million
• USA: 133.9 Million
10% vCPE penetration
2 VM per CPE
100 VMs / server
30% vCPE penetration
2 VM per CPE
100 VMs / server
50% vCPE penetration
2 VM per CPE
100 VMs / server
2.1 M Servers
6.3 M Servers
10.5 M Servers
Households vCPE Adoption Servers Needed
13
14. Sizing the reference design
https://en.wikipedia.org/wiki/List_of_countries_by_number_of_households
Residential vCPE Infrastructure Sizing: Bandwidth
Residential
Households:
• China: 455.9 Million
• India: 248.4 Million
• Europe: 218.9 Million
• USA: 133.9 Million
10% vCPE penetration
10 Mbps / CPE
30% vCPE penetration
100 Mbps / CPE
50% vCPE penetration
1 Gbps / CPE
500Mbps / Server
( 2.1M Servers)
5Gbps / Server
(6.3M Servers)
50Gbps / Server
(10.5M Servers)
Households
vCPE Adoption /
Speed
BW per Server
14
15. How big is the pie?
In terms of number of servers
15
10M servers at USD 5,000 per server = USD 50B investment…
NFV
Industry
Cloud
Industry
2 to 10 Million Servers?3 to 10 Million Servers?
17. • NFV, What, Why, How?
• What is the Problem?
• Composable NFV Services
• Help! Ideas
• Summary
Agenda
17
18. We need more…
18
Business vCPE + Other Branch site software
Compute node(s) running the following functionality at the
branch
● vRouter with the following services
● WAN connectivity with IPSec
● Firewall
● Intrusion Protection
● DHCP services
● WAN optimization
● Branch Compute
● DNS
● AD/LDAP agents
● Physical Security applications – Video Monitoring,
Security sensors etc
● PBX
● Wireless LAN Controller
PB
X
Branch
Router
DNS, LDAP
Branch Apps
Wireless LAN Controller
FW
Converged Branch
Virtualized Environment with
vCPE with vRouter+
Compute, Storage and Apps
FW, DHCP, WLAN Controller
Current
Branch
DHCP
19. Service Function Chaining Models
Service Insertion / Service Function Chaining
19
Topology Based Service Insertion
Virtual Domain
Distributed
Policy
Edge Policy
Enforcement Point
Policy Based Service Insertion
Virtual Domain
Distributed
Policy
Service
Chain
20. We need more … Composable NFV Services
More means… many more!!!
Security Services
● vFW - Firewall
● vALF - Application Level Firewall
● vIPS - Intrusion Protection
WAN Access Services
● WAN Optimization
● SDWAN
Virtual VPN concentrator
Residential Services
● vRouting
● vEmail Scrubber
● vIDS - Intrusion Detection - Perimeter Services
● vQuota Management
● vPersonal Firewall
Managed/Business Services
IPAM - IP Address Management
● vDNS -
● vDHCP
● vNAT
Data Services
● vLB - Load Balancer
● vDPI - Deep Packet Inspection
Virtual Content Cache Node
● Video Cache
● Video Optimization
20
21. Redrawing vCPE design
Internet
HFC/GPON
Demarc Point
L2 NID
Ethernet
VMDC Switch
vFW
vFW
Traffic-O
vRouter
QoS
VxLAN
VxLAN
VxLAN
Sub
Configuration
Policy
AAA
VM NATVM
Quota
Management
Parental
Control
VM NAT
vIPS/
Malware
vLB
VM
VM
VM
App or Content
Cache
uCPE
nCPE
21
23. Sizing the reference design
https://en.wikipedia.org/wiki/List_of_countries_by_number_of_households
Residential vCPE Infrastructure Sizing: Number of Servers
Residential
Households:
• China: 455.9 Million
• India: 248.4 Million
• Europe: 218.9 Million
• USA: 133.9 Million
10% vCPE penetration
6 VM per CPE
100 VMs / server
30% vCPE penetration
6 VM per CPE
100 VMs / server
50% vCPE penetration
6 VM per CPE
100 VMs / server
6.3 M Servers
13.2 M Servers
31.5 M Servers
Households vCPE Adoption Servers Needed
23
24. How big is the pie?
In terms of number of servers
24
NFV
Industry
6 to 30 Million Servers?
Cloud
Industry
3 to 10 Million Servers?
30M servers at USD 5,000 per server = USD 150B investment… !!!
26. • NFV, What, Why, How?
• What is the Problem?
• Composable NFV Services
• Help! Ideas
• Summary
Agenda
26
27. 27
Back to the drawing board…
This time with the ruler!!
28. Exploring Solutions
We need to look for efficiencies in multiple dimensions
DensityBandwitdh Architectural
FD.IO/VPP
XDP/IOVisor
DPDK/OVS
Smart NICs
SR-IOV
Multi tenant
VNFs
Containers
Serverless
Computing
New VNF
models
(distributed
Data Path)
Thin/Thick CPE
Policy based
Networking
Service based
Networking
Tethered CPE
Needed Goals: 40-100Gbps / server 100x to 1000x density
improvement
Simplify operations, visibility
and management.
Extensibility/new services.
28
29. About Bandwidth
29
Bandwitdh
FD.IO/VPP
XDP/IOVisor
DPDK/OVS
Smart NICs
SR-IOV
40-100Gbps / server
Things to consider:
• Raw PPS/BW
• Current feature set / Future feature set
• Programmability & Ecosystem of developers
• Solution for VM, Containers or VM & Containers
• Beyond Networking: Security/Policy at all dimensions of
infrastructure
• Part of Linux Kernel / External to Linux Kernel
• Isolation of environments
• HW assist
30. About Architecture
30
Architectural
Thin/Thick CPE
Policy based
Networking
Service based
Networking
Tethered CPE
Simplify operations, visibility and
management. Extensibility/new services.
Things to consider:
• Thin/Thick CPE transition steps
• Alternative models? Tethered CPE or uCPE
• Do we need to change our thinking towards
networking (from topology to policy/services)?
31. About Density
31
Things to consider:
• HW to VNF VM as first transition (1-1)
• Complex Multitenant VMs to Single Tenant VMs (1-N)
• VM to Containers next logical transition (1-1)
• What about other models? Equivalent to AWS Lambda for
networking? (N-0)
• Control Plane – Data Plane Separation (N-1)
• Vendor Ecosystem and Marketplace around the different
technologies
Density
Multi tenant
VNFs
Containers
Serverless
Computing
New VNF
models
(distributed
Data Path)
100x to 1000x density
improvement
32. Red Hat and PLUMgrid Solutions
Overlay
Service
Chain
VNF
PLUMgrid Open Networking Suite
Specific VNFm
(e.g. Tacker)
ManageIQ
ROSP
Openstack
VM and Virtual Infra (RHEL)
Tenant
Networks
Or-Vi
HOT, API
Ansible
API, Or-Vnfm, VNFD
Vi-Vnfm
Vi-Vnfm, HOT
Nf-Vi
REST API
Nf-Vi
IOVisor
32
33. • NFV market is happening, 5G as a potential main
driver in the coming years
• Still some unresolved problems around the overall
solution, but well understood and with active
development on those areas
• No ‘universal solution’ that fits all the NFV use cases
yet. But specific solutions for certain use cases already
in Production
• VNF vendors slow to play nice with the NFV ecosystem
/ marketplace. Need for new generation of start ups
that will deliver VNFs in new form factors
• Try it!
Conclusions
33
