service assurance in the era of virtualization · ericsson hds-8000 ericsson cloud execution...
TRANSCRIPT
© 2017 TM Forum | 1
Service Assurance in the
Era of Virtualization
Sébastien Grognuz, Swisscom
Dr Vikram Saksena, NetScout
© 2017 TM Forum | 2
23.06.162 We need a story to virtualize our network functions !
SGSN
S-GW
GGSN
P-GW
PCRFAAA
DNS
2G
3G
4G
(P)WLAN
BB W+
ePDG
MSC-SMGW
CGNAT
Proxy
Virtual Router
BBSC
SDN-C
EFS
BNG
HLR-FE HSS-FE
CUDB
RNC
BSC
SPT-Clus.
MPLS-PE
Evolved Packet Core
AAA-FE
DPI
Wireline
Comms/UDM
Comms/CS
CGNAT
Access
Load Balancer
Business CPE
6RD
LDAPDHCP
Firewall
C-RAN
RAS
VPN
PWLAN Core
ISGMCAR
Small cells
DSC
Comms/Solution Factory (Core & Service)
Service Broker
SBG
Device Mgmt
HET ASSIP CoreSIP Trunk
WebRTC
EIR
ENUM-FE
SESM
MS
MMI
VPC
Signal./Roaming
STP
VHE Farew.SMS
Co
mm
s/E
PC
3
4
4
4
5
4
6
6
6
RCARWLC
LI
SIS
MME
NP DB
LI
IP Loc.
LBSGMPC
SMPC
Comms/Regulatory6
MPS
MTAS
BGF
BCON
SMSC
MMSC
NAF
SCCAS
RCS AS
S-CSCF
I-CSCF
P-CSCF
ATCF
IBCF
MRFP
BSF
BGCF
Comms/Volume Factory-Core Comms/Volume
Factory-Service
eSPIN/Srv. B’ker
HET ASUC
IM& P
MMVAS
WebRTC
E-CSCF
DNS
Voice Mail
Televote MVR
AFG
MR
S
6 6
CSC
F
SBG
MRFC
© 2017 TM Forum | 3
23.06.163 Why do we need to virtualize ?
Economy of scale
• One infrastructure for
several organizations
• Consolidate hardware,
power, cooling systems
and cabling
Automation
• Shorter time-to-market
for new services
• Simplified scale-up/down
procedures
• Improved service
resilience
New Business
• Business Network Services
vCPENew Revenue
Lower OPEX
Lower CAPEX
Higher return on investment
More flexibility
Test services with lower risk
More openess
Enable rapid inovation
© 2017 TM Forum | 4
How, can we to virtualize the network functions ?
ETSI NFV Reference Architecture
Ericsson
HDS-8000
Ericsson
Cloud Execution Environment
(ECEE)
Ericsson
SDN-C
Ericsson
Cloud Manager
(ECM)
E///
vEPC
E///
vIMS3PP
VNF
© 2017 TM Forum | 5
Step 1 of the journey : VoLTE Network Slice
• Swisscom aims to migrate its entire mobile
packet core into a carrier-grade cloud provided
by Ericsson. The first stage consists to deploy a
vP-GW, vPCRF and vEPDG to produce the
VoLTE and Wifi-Calling services.
• Swisscom is facing monitoring blind spots
because inter-VM traffic never reaches the top
of the rack. Monitoring of the east-west traffic
prevents security and performance issue.
• NETSCOUT is today a major partner of
Swisscom for the monitoring of the physical
network function. Together with Ericsson we
want to demonstrate that 100% visibility of inter-
VM traffic is possible.
Telco CloudEricsson NFVI (OpenStack based)
GbIuS1
SGi
S2b
Rx
SGSNMME
GiP-GW
HLR-FE AAA PCRF
EricssonvEPDG
Gr S6a Rad Gx
EricssonvP-GW
S5
EricssonvPCRF
Gx
S-GWGn
HSS-FE
SWu
IMS
RadioAccess
Untrusted
Wi-Fi
WWW
© 2017 TM Forum | 6
Service Assurance Challenges in the New Era
Hybrid Networks
Prevail
What’s needed?
A complete view across
your entire network with
end-to-end correlation
between physical &
virtual elements.
Adding virtual network
elements to the mix
raises the level of
complexity.
Visibility Gaps
What’s needed?
A solution that provides
a comprehensive view
of all traffic across VNF
service chains.
How do you get visibility
across intra-host and
inter-host traffic
Real-Time
Monitoring
What’s needed?
A tool that can monitor
and compute metadata
and KPIs in real-time to
enable auto-scaling.
Auto-scaling of VNFs
requires capture and
analysis of KPIs in a timely
manner.
Automation &
Orchestration
What’s needed?
VNFs require well-defined
APIs to enable seamless
integration with open
source and commercial
orchestration tools.
Critical to ensure the
success of NFV
deployments.
© 2017 TM Forum | 7
Virtual Instrumentation Options
Hypervisor
Guest OS
VNF…
vSwitch
Guest OS
VNF
Guest OS
• Smart vTap deployed on the
same Guest OS as VNF
• VNF, vSwitch agnostic
• Provides basic set of KPIs
• Enables visibility in public
cloud
• Virtual Probe runs in its own VM
• Deployed on shared or dedicated
host
• Packet capture through vSwitch
port mirroring (“tap-as-a-service”)
• Smart vTap deployed with vProbe
• Selective packet forwarding from
vTap for full analysis by vProbe
• No mirroring required on the
vSwitch
vProbe
Hypervisor
Guest OS
VN
F
Sm
art
vTap
…
vSwitch
Guest OS
VN
F
Sm
art
vTap
vProbe
Hypervisor
Guest OS
vSwitch
Guest OS Guest OS
…
VN
F
Sm
art
vTap
VN
F
Sm
art
vTap
© 2017 TM Forum | 8
Service Assurance Continuity
IP Backbone
PhysicalGateway& Probe
IMS Core
VirtualGateway& Probe
Service Assurance
End to End VoLTE Call
vProbe
vProbe
• Complete visibility across physical and virtual networks
• Common metadata from all probes facilitates seamless integration at the analytics layer
• Enables disruption-free evolution
© 2017 TM Forum | 9
Assurance of New On-demand Services
Metro EthernetBusiness uCPE
vPERFabricSwitch
Operator Edge Cloud
vProbe
vFW
vDNS vPER
Service Assurance
vProbe
End to End SLA
• Complete visibility from customer premises to the Operator Edge Cloud for SLA enforcement
• A small footprint vProbecan be remotely configured on the uCPE
• Dynamic configuration of instrumentation options as services are spun-up on demand
© 2017 TM Forum | 10
Seamless Migration from Private to Public Cloud
Internet
FabricSwitch
Operator Private Cloud
vProbe
App
App
Service Assurance • Migrate applications into the Public Cloud without losing visibility
• The vProbe in the Public Cloud is deployed as a microservice embedded within the application
• End to end monitoring and assurance across Private and Public Clouds
App
App
App
vProbe
App
App App
App
App
PublicCloud
© 2017 TM Forum | 11
Smart Analytics drives Closed-Loop Assurance
• Descriptive
o “what happened”
• Diagnostic
o “why it happened”
• Predictive
o “what may happen”
• Prescriptive
o “what actions to take”
High-Value Metadata
High-Value Metadata
Smart Instrumentation
Smart Analytics(Rules Engine, Machine Learning,
Artificial Intelligence)
OrchestrationPlatform
Network Auto-Configures without Human Intervention
© 2017 TM Forum | 12
Summary
❖ Virtualized networks is the next major evolution in networking
➢ Operators gain control of service creation and are able to innovate faster in response to customer and market needs
➢ Networks become more agile and elastic, better managed and orchestrated, lowering the total cost of ownership
❖ Service Assurance is a critical bridge to this new network
➢ End-to-end visibility across the physical and virtual network infrastructures as the network makes this transition
➢ Migration to Public Cloud and enablement of new on-demand services
➢ Smart analytics for service delivery automation and just-in-time resource management