The document discusses Network Function Virtualization (NFV) service assurance, highlighting key aspects such as NFV technology overview, use cases, and a telco NFV case study. It emphasizes challenges in NFV adoption, particularly the cultural barriers and the need for integration between IT and network operations. The document also outlines the benefits of NFV, including operational efficiencies, service elasticity, and dynamic management of virtualized network functions.

1. Demystifying
Network Function Virtualization (NFV)
Service Assurance

2. Session Agenda
• NFV Technology Overview
• NFV Assurance Use Cases
 Branch Office
 SDN
 NFVI
• Telco NFV Case Study
• Summary
2

3. 3

4. 2017 Predictions: NFV makes its move in 2017
http://www.rcrwireless.com/20170105/opinion/2017-predictions-nfv-makes-its-move-in-2017-tag10
“The single biggest barrier to NFV adoption will continue to be culture. Consolidation
between the carrier network and IT operations teams means carriers must adopt cloud-
native operation practices to run their core infrastructure efficiently. Stated differently,
the legacy need for separate groups and frameworks to manage IT and network
services becomes obsolete. It’s a major hurdle in those organizations that are leading
the way in NFV adoption.”
“2017 will see broad-scale adoption among service providers, and the
emergence of an enterprise market for NFV solutions”
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5. 5

6. Network Function Virtualization Infrastructure
6
Non-specialized Hardware Resources
Compute Storage Network
Virtualization Layer

7. Network Function Virtualization Infrastructure
Non-specialized Hardware Resources
7
Compute Storage Network
Virtualization Layer
Virtualized Network Functions
SD-WAN APN CacheURL Ads
EM SD EM APN EM CacheEM URL

8. Network Function Virtualization Infrastructure
Non-specialized Hardware Resources
8
Compute Storage Network
Virtualization Layer
Virtualized Network Functions
SD-WAN APN CacheURL Ads
EM SD EM APN EM CacheEM URL
NFV MANO
Orchestrator
VNF Manager
Virtual Infrastructure
Manager

9. NFV Benefits
Reduction of network elements
to manage & deploy
Operational efficiencies
through virtualization
Service Elasticity
Reduced complexity
for High Availability
Automated network
operations
Deployment of
best-of-breed
OPEX decrease by
reduction of branch visits
Capex reduction by
deployment of standard
x86-based servers
9

10. NFV Assurance Use Cases

11. Zenoss NFV Experience
First virtual network device support shipped in
2013
• Cisco Nexus 1000v, ASAv, CSR 1000v
• Citrix Netscaler VPX
Followed by ACI, UCS E-Series, Viptela
~15% of commercial customers now using
virtual network devices
• with Nexus 1000v, more like 50%
Several telcos in early stage NFV deployments
? ?
? ?
11

12. Branch Office Virtualization

13. vBranch / vCPE: Location Scenarios
1. vCPE & VNFs at premise
• Service functionality is in the Branch, aligns w enterprise
model today. Most popular and well accepted model..
2. Cloud based vCPE & VNFs + basic HW CPE
• Service function is in DC
• SMB market target typically (reduced branch functions)
• Few years ago target, now market moving to #1
3. vCPE & VNFs at premise + VNF in Cloud
• VNFs and Value added services placed where performance, cost,
and policy compliance are optimal.
• Dynamic relocation of functions, based on factors such as
changing network loads, to provide optimal quality of experience
• Futuristic today, #1 is market reality today
13

14. Impact of Network Functions Virtualization in the branch
•Discrete physical Appliances installed and cabled together
•Add/Modify - physical presence of technical staff
•Space/power requirements
•Physical inventory management and low utilization
•Rich and flexible services with a variety of VNFs and even application
VMs
•Multiple functions delivered on one hardware
•Deploy/modify services remotely w virtualization
•Pay for what you use, easy to deploy new VNFs
•Automated deployment & management
Before vBranch solution
SP
WAN
Physical CPE and physical appliances cabled together
Branches
HQ
SP
vBranch Introduction
SP WAN
Same network functions but virtualized + possible Apps
CSR1kv ASAv vWAAS3rd party
Self-service Portal
vBranch VMS
Management platform
14

15. Branch Office Networking with UCS-E Series
UCS E-Series server
• A server in an ISR blade
• Perfect place to run firewalls, VDI, etc.
Zenoss Integration
• Monitored like any UCS Server
• vSphere impact relationships
• 1000s being monitored today
15

16. Partnership: Viptela SD-WAN
Viptela SD-WAN Solution
• Secure data connectivity over any
transport
• Centrally managed routing, policy,
security, segmentation, and
authentication
Zenoss Integration
• Fault and performance monitoring for
branch office network
• Single connection to vManage provides
monitoring for control and data plane
across every device
• Proven scale to 6,000+ Viptela devices
16

17. Datacenter ACI and Virtual Networking

18. Zenoss for ACI
Monitors ACI-defined applications and
automatically tracks the health and
performance of the supporting infrastructure
• Compute and Virtualization
• Storage
• Network and Network Services
• OS workloads and middleware
Proactively evaluates application health and
provides cross-technology stack root cause
identification
Continuously tracks the health and
performance of each ACI tenant application and
its supporting infrastructure
18

19. Fabric Infrastructure Visibility
Efficient Day 2 operations of ACI applications
Tenant and Application health
Spine, leaf, and APIC policy relationships
Network Function Devices monitoring, including
links into supporting infrastructure
19

20. Cisco NFV Infrastructure

21. Zenoss for Cisco NFVI
• Unified view of performance, fault,
and availability for physical and
virtual elements of Cisco NFVI
• Proactive capacity thresholds
• Automatically configured by the
Cisco VIM so monitoring stays in sync
with deployment with no manual
effort
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22. Cisco VIM ZenPack
Automates discovery of all NFVI
elements
•OpenStack
•Cisco UCS
•Nexus Switches
No need to add devices or configure
authentication
Delivers aggregated performance
metrics and provides capacity
thresholds
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23. Identifies NFV Tenant Dependencies
Here, infrastructure that
this tenant relies on
Shows recent KPI
metrics for infrastructure
elements
Faster MTTR with
Health issue
identification
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24. Zenoss NFV / VNF modeling
Live Model Features
• Automatically builds
model of shared
infrastructure supporting
each network service
• Event-driven updates
for as-running accuracy
• Identifies network
services affected by
infrastructure issues
• Drives root cause
analysis to quickly focus
problem resolution on
individual tenant issues
Supports VNF devices
running in virtual machines
OpenStack support for Nova
, Neutron, and Ceph
24

25. Telco NFV

26. the Telco NFV Hype Cycle
past the peak of inflated expectations, exiting the trough of disillusionment and entering the slope of enlightenment
Expectations
201
2
201
3
201
4
201
5
201
6
201
7
201
8
201
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Innovatio
n Trigger
Peak of Inflated
Expectations
Plateau of
Productivity
Trough of
Disillusionment Gartner Hype Cycle
ETSI
initial white
paper
ETSI NFV R1
convergence of vision
for virtualization
ETSI NFV R2
end to end
interworking
ETSI NFV R3
operational
optimization
3GPP 5G Wireless
accelerated
deployment
explosion of
activityearly success
stories of
virtualization
integrating
and
implementing
lab demo’s
harder than
expected
widespread
deployment in
4G networks
core part of
5G
architectures
cloud
native
26

27. Service Assurance in the ETSI VNF Model
ETSI NFV Model
Service
Assurance
vNMS
Fault
Management
Performance
Management
Log
Management
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28. 28
Service Assurance - virtual Network Management System (vNMS)
“Service Assurance (SA) collects alarm and monitoring data.
Applications within SA or interfacing with SA can then use this
data for fault correlation, root cause analysis, service impact
analysis, SLA management, security monitoring and analytics,
etc.”
• Automatic discovery
• Connection with orchestration
• Collect alarm status, events, performance metrics and logs from VNF’s
• Transform/enrich the collected data
• Identify the underlying cause of faults
• Identify which services are affected
• Report on SLA’s and KPI’s
• Automatically detect performance anomalies
• Integrate with OSS/BSS for network wide problem tracking and analytics
Service
Assurance
vNMS
Fault
Management
Performance
Management
Log
Management
OSS/BSS
VNF’s

29. Case Study: implementing Zenoss as a Telco vNMS
vNMS
Fault
Management
Performance
Management
Log
Management
OSS/BSS
VIM
Compute StorageNetwork
Openstack/KVM
NFVI
VNF 1
EM 1
VNF 2
EM 2
VNF 3 VNF 4
VNF’s
vProbe
Orchestrator
Linux
VEM 3
VNF 5
COMP 1 COMP 2 COMP 3
local
dashboards
collected data enriched events
Service
inventory
scripts
Telco
Network
29

30. 30
Case Study: implementing Zenoss as a Telco vNMS
Differences between VNF architecture’s
• Monolithic (ported from appliance)
• Disaggregated into functional modules
Different ways to communicate
• Direct to module, through a management agent
or using an EMS
• snmp, REST api, sftp, CORBA
Orchestration systems maturing
NFVI and VNF being managed by different
teams (IT and Network)
Deciding if the vNMS should be a just
another VNF or deliberately separated
Challenges Zenoss Advantages
Integration with OSS/BSS shielding from
complexity of different VNF architectures
Quick to build ZenPacks to support a range of
protocols from VNF’s for fault, performance
and logs
Able to import/export inventory information
and work with the Orchestrator to register
VNF’s as they are activated
Manage the VNF and VNFi in one system
mapping the dynamic relationships as
resources scale up and down
Robust and scalable deployment options

31. Summary

32. NFV Assurance Challenges and Requirements Summary
Challenges Requirements
 NFV reliability dependent on the performance and availability of the underlying
infra layers: Compute, Storage, Hypervisor, Op system, networking
 NFVs’ are not aware of NFVI dependencies and dynamic environment
Consolidated NFV Infrastructure and VNF
operations
 Traditional network infrastructure static (dedicated HW/SW)
 NFV operations requires a dynamic mapping of VNFs to the NFV
infrastructure
NFV management tool following infrastructure
changes dynamically
 Quick and easy Multi-vendor adaptation (simple to add any vendor VNFs or
NFV infrastructure)
Open SDK to add multi-vendor devices,
technologies, VNF SW. Broad range of
protocol support: SNMP, syslog, XML,
Netconf, and vendor specific APIs
 Integration with legacy operations infrastructure, ticketing systems for quicker
adaptation to new technologies
Open NB APIs, bi-directional integration
capability
 Dynamic Orchestration system bi-directional integration (exchanging inventory,
services, remediation actions)
Exchanging inventory, service model,
triggering remediation actions with
orchestration
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33. Zenoss perfect fit for NFV Assurance
Match made in heaven
Requirements Zenoss Functionality / Features
Consolidated NFV Infrastructure and VNF operations Single platform covering servers, Openstack, Docker
containers, Linux, VNFs
NFV management tool following infrastructure changes
dynamically
Dynamic mapping of VMs to infrastructure, VNFs on VMs,
interfacing to all NFV levels
Open SDK to add multi-vendor devices, technologies, VNF SW.
Broad range of protocol support: SNMP, syslog, XML, Netconf,
and vendor specific APIs
ZenPacks to cover any VNFs, technologies, interfaces. ZPs
can be developed by anyone.
Open NB APIs, bi-directional integration capability JSON API based integration to orchestration, service desk,
inventory systems
Exchanging inventory, service model, triggering remediation
actions with orchestration
Existing orchestration integrations e.g. Cisco NSO / Tail-F
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34. Questions ?
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35. Culture of Champions
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