The document discusses transitioning to automated, software-driven cloud networks. It outlines how application architectures have evolved from enterprise data centers in the 1990s to hybrid clouds today. This increased complexity calls for network simplification and automation. The document introduces Arista's CloudVision platform which provides turnkey network automation through services like provisioning, change management, and network-wide rollback. CloudVision offers network-wide visibility and control through its centralized database. It allows for easier integration with orchestrators and provides a single pane of glass for network management.

1. Transitioning to an Automated, Software Driven
Cloud Network
David Murray - Systems Engineer EMEA - dm@arista.com

2. Enterprise DC"
1990+
Virtualized DC "
2000+
Private/Public Cloud
2010+
Hybrid Cloud "
Radar
Internet
Applications Architectures are Evolving

3. Enterprise DC"
1990+
Virtualized DC "
2000+
Private/Public Cloud
2010+
Hybrid Cloud "
Radar
Internet
Applications Architectures are Evolving
Solution - More Network Complexity?

4. Simplify

5. Build on Simple Foundations
• Vanilla IP networks
• Leaf-Spine topologies
• Network level redundancy
• Repeatable elastic units
• Robust APIs
Source: facebook.com

6. MLAG / LACP BGP / OSPF + ECMPSpline™ / LACP
VXLAN: Network
Virtualization
100 to 10,000
500 to 100,000+
500 to 100,000+
Host Scale: 0 to 2,000
100,000+
500,000+
1,000,000+
VM Scale: 20,000+
Open standards meet all scaling requirements

7. Automate

8. Why automate (the bad)?
$84,000.00
$168,000.00
$252,000.00
$336,000.00
$420,000.00
$504,000.00
$588,000.00
$672,000.00
15
30
45
60
75
90
105
120
Cost of an outage
Minutes
• 59% of F500s experience ≥1.6hrs downtime per week
– (Dunn & Bradstreet)
• Average outage lasts 200 minutes
– (IT Process Institute)
• Downtime average 87hours/year
– (Gartner)
• Downtime costs $5600/minute
– (Ponemon Institute)
• 49% of outages are caused by human error
– (IEEE)

9. 80% of IT activity, time and dollars are spent
keeping the lights on
- http://www.gartner.com/newsroom/id/497088

10. Key wins for automation:
• Time to delivery/repair
– Zero Touch Provisioning and Replacement of
hardware
• Design stability
– Config validation and application
• Avoiding grey failures
– Automated upgrades
• Pro-active fault management
– Remediation and fault isolation
Source: facebook / nanog.org
Complexity

11. Do-It-Yourself
Custom development for
integration
Software development
resources & approach
DevOps
Leveraging existing tools
(Puppet, Chef etc)
Integration & customization
via scripts
Turnkey
Limited solutions today, focus on
legacy models
Customers need turnkey solution
for cloud-automation!
Approaches to Network Automation
Cloud Titan
High Tech
Enterprise / SP
Traditional
Enterprise / SP
10,000
network elements per engineer
1,000
network elements per engineer
100
network elements per engineer
© 2015 Arista - Confidential

12. Low Inter-Process Communication
Arista EOS Architecture
Efficient Publish/Subscribe
Publish
Notify
PIM
SNMP
BGP
Driver
SysDB
MLAG
STP
eAPI
IGMP
Linear Cloud Scale
Arista EOS: Resilient Cloud Scale Software
© 2015 Arista - Confidential
Open &"
Programmable
Merchant Silicon
SysDB
CLI
SNMP
VXLAN"
VM"
Tracer
OSPF
STP
ASIC"
Driver
SDN"
APIs
LAG
BGP
Modular &"
Resilient
Universal Cloud"
Network
Customer Driven"
Flexibility
Cloud Scale"
Economics
EOS
vEOS
EOSPrinciples

13. § EOS Network Wide Services
§ Single network control point for:
• Third party controllers
• Orchestration services.
§ Turnkey workflow automation
CloudVision
Workflow Automation Services
Workload Orchestration Services
EOS Network Wide Services
Open APIs & Partner Access
Arista’s Universal Cloud Network
Arista EOS CloudVision
© 2015 Arista - Confidential

14. EOS Devices
Workflow Automation
Services
CloudVision Framework
Management, Monitoring
Tools
Orchestrators and Overlay
Controllers
Open APIs
Open RESTful APIs
EOS Core Services
Workload "
Orchestration Services
CloudVision
eXchange (CVX)
OVSDB, eAPI, Plugins
3rd Party
Integration
CloudVision Portal
(CVP)
© 2015 Arista - Confidential

15. CloudVision Exchange

16. Platform for Automation and Visibility across the Network
Network-Wide Database
Aggregation of Network
wide ‘Sysdb’
Abstraction of the "
physical network
Single integration point to
the network
More scalable controller
integration
Realtime data collection
and Historic trending
State-sync

17. Cloud
Orchestrators
Overlay
Controllers
www.arista.com
Network
Services
Network"
Layer
Network Control
Point
OVSDB
JSON
Points of "
Integration
Single point of
integration to the
physical infrastructure
Web-based GUI
CLI
Platform for Automation and Visibility across the Network
Network-Wide Database
State-sync
© 2015 Arista - Confidential

18. Overlay "
Controller
Scaling Controller Integration
18
OVSDB
Overlay "
Controller
Network Layer
Controller Layer
10x
Improvement
OVSDB
SysDB
State Sync
Topology/Device
Dependent
Topology/Device
Abstraction
Traditional
Approach
CloudVision
Approach
© 2015 Arista - Confidential

19. CloudVision Portal

20. CloudVision Portal Key Features
20
Network Rollback
Efficiently revert the network
back to a known good state
Overlay/Underlay Visibility
Physical and logical layout, VNI
mapping and performance
hotspots
Provisioning
Turnkey solution for
automating network
operations
Change Management
Snapshot of pre- and post-
changes for better control
Network-wide Upgrade
Automate software upgrades
across groups of devices
Maintenance
Mode
Production
Mode
Single Pane of Glass
Point and click interface to
simplify bulk tasks
© 2015 Arista - Confidential
Time t
Time t-1
✔
✗

21. CVP - A Single Interface to Automation
© 2015 Arista - Confidential

22. CloudVision Core Services
Manual box-by-box
operations. Difficult to
correlate network-wide.
Network-wide
synchronization for
topology level visibility.
No ability to monitor
code versions and alert
on software bugs
Services Dashboards,
with proactive
notification tools
Separate vendor tools
for Inventory, Syslog,
Management,
Compliance & other
infrastructure reporting
Consolidated reporting
view within a single
application
Typically pair of non-
customizable NMS tools
built for limited sizing,
scale & deployments
Big Data Infrastructure
fully customizable web
GUI
Primary
Secondary
Initial
Node1
Object X
(Active)
Object Y
(Active)
Object Z
(Backup)
Node3
Object Y
(Backup)
Object B
(Active)
Node2
Object X
(Backup)
Object Z
(Active)
Object B
(Backup)
Node1 Failure
Node3Node2
Offline /
Failure
Node1
Object X
(Active)
Object Y
(Active)
Object Z
(Backup)
Object Y
(Backup)
Object B
(Active)
Object X
(Backup)
Object Z
(Active)
Object B
(Backup)
Node1 Node2 Node3
Node1 Node2 Node3 Node4 Node5
Initial
Add 2 Nodes
Before
With CloudVision
© 2015 Arista - Confidential

23. Cloud-like automation for everyone
Turnkey Provisioning
§ Automatically provision switches centrally
from a network wide view
§ Single tool & view to manage code,
configuration, scripts etc.
§ Manage switch throughout switch’s DC
life cycle using single provisioning
process
§ Full configuration coverage, including
VXLAN
§ Configuration compliance validation
© 2015 Arista - Confidential
Scripting
Image
Configuration
Configurations
Images
Scripts
ZTP/ZTR
Existing
Approaches
With Arista EOS
CloudVision

24. Change Management
§ Perform graceful change controls
without impacting applications
§ Automatic snapshots pre & post change
with delta reporting in network wide view
§ Useful for Smart System Upgrades
(SSU) or any change control
§ Integration into Workflow Tools, such as
Service Now
© 2015 Arista - Confidential
Confidence for Change Controls
go-
forward
Productio
n
Maintenanc
e
Roll-
back
Existing
Approaches
With Arista EOS
CloudVision
Configurations
Images
Scripts
✔
✔
✗
✗

25. Availability: Network-wide Rollback
§ Network-wide scope: Images,
configuration, scripts
§ Historical state used to recover to
previous network state.
§ Rolling snapshots during change
controls making it easier to roll-back
during issues
§ Reduce the time-to-recovery during
maintenance windows
Safety tool for maintenance window recovery
A time machine for
your network
© 2015 Arista - Confidential

26. CloudVision: Platform for Partners
Partner for NSX Controller for
overlay networking VROps for
visibility
Partner for Converged System
Reference architecture,
including HP OneView
Partner for Controller integration
for Transport networks
Partner for OpenStack
integration
Partner for L4-7 services
integration
Partner for Converged systems
Partner for L4-7 services
integration
Partner for OpenStack
integration
Partner for Solution integration,
including ASM
Partner for Windows Server
2016 integration for network
controllers
Partner for Controller integration
for overlay networks
© 2015 Arista - Confidential

27. Fast path to Cloud: Turnkey solution for Automation and Orchestration
EOS is now a “Network Wide Service”
Opex Reduction: By enabling automation of simple cloud services
Extends Arista’s EOS Platforms for Software Defined Cloud Networking
1
2
3
4
CloudVision Summary
© 2015 Arista - Confidential

28. Thank You - Any Questions?
dm@arista.com