The WAN Automation Engine (WAE) is a software platform that provides multivendor and multilayer visibility and analysis for service provider and large enterprise networks. It plays a critical role in answering key questions of network resource availability, and when appropriate can automate and simplify Traffic Engineering mechanisms such as RSVP-TE and Segment Routing. This session will focus on use-cases and APIs for developers. Watch the DevNet 2035 replay from the Cisco Live On-Demand Library at: https://www.ciscolive.com/online/connect/sessionDetail.ww?SESSION_ID=92720&backBtn=true Check out more and register for Cisco DevNet: http://ow.ly/jCNV3030OfS

1. WAN Automation Engine API
Deep Dive
Josh Peters - Technical Marketing Engineer
Marcelo Silva – Senior Product Manager
DEVNET-2035

2. • Introduction: What is WAE?
• Key Use Cases
• API Walkthrough
Agenda

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Abstraction from Protocols to Applications
“Service Abstraction”
Service models & orchestration
“Network Abstraction”
Path computation, Network model
“Device Abstraction”
Controllers, NED’
Protocols
Southbound network protocols
Applications and Services
Networks and Network Models
Devices and Device Models
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What is WAE ?
• A model-driven path visibility and path
computation engine that can simulate,
optimize and activate paths in the network
supporting a multi-vendor and multi-layer
environment
• Enables applications for planning, peering,
forecasting, traffic engineering to be
developed via a programmatic interface
• WAE is NOT a controller – but leverages
controllers.
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WAN Automation Engine
Evolution: Delivering Optimization and Automation
• Modeling
• What if/predictive
analysis
• Global optimization
• Assess historical and
real-time data
• Find and manage
hot spots
• Network efficiency
analysis
• Programmatic
network control
• Model-driven Path
Activation
• Monitor for path
constraint violations
• Automate network
changes to ensure
path compliance
Predictive Model Time Series Visibility Path Activation
Dynamic SLA
Management
WAE
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Optimization and Prediction Module
WAE Architecture Overview
…
WAN Automation
Engine
Collector DeployerNetwork Interface
Network Model Manager
Service Interface APIs
SNMP NetFlow
Optical
Plug-In
BGP-LS
( ODL) NMS/EMS
NSO
Device
Mgr.
PCEP
( ODL)
Control
ler
Plug-In
WAE
Design
BW
Cal.
BW
OD
Service
Orchestator
Ex: NSO
WAE
Live
Co-ordinated
Maintenance
Third Party
Apps
…Telemetry
Data
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7. Key Use Cases

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Simulation and Impact Visualization
Route Simulation Traffic Simulation
Determine how Demands and LSPs are routed
taking into account network constraints
(MUST consider failure conditions)
Using the Routing Simulation, Determine the
utilization of interfaces and SLA impact to traffic
(MUST consider failure conditions)
Simulate Link Failure See the Impact per Service Class
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Use Case: Evaluate Onboarding of a New Customer
Can a new service using 4Gbps at the San
Francisco PoP be supported?
Model and predict impact of the new service
within minutes
Identify flows for new customer Add 4Gbps to those flows
Simulate results
Scenario Value
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Use Case: Multi-layer Path Diversity
Observations Analysis Recommendations
At Layer three LSP paths look
disjoint
If a fiber cut happens, both
tunnels go down
Account for L1 and L3 in the
disjointness calculation
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Use Case: Optimization based on Capacity
Scenario Value
Ask WAE to find the minimum number of tunnels
needed to get below a utilization threshold
Optimize the network to ensure it is not over-
utilized
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12. WAE API Walkthrough

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WAE Design RPC API Example
WAE Design: WAE RPC API
WAE Design functionality accessible through an API
• Step 1: Get the Latest Model From the WAE Automation Server
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WAE Design RPC API Example
WAE Design: WAE RPC API
WAE Design functionality accessible through an API
• Step 2: Create the LSP
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15. © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Public
WAE Design RPC API Example
WAE Design: WAE RPC API
WAE Design functionality accessible through an API
• Step 3: Create the LSP Path
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16. © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Public
WAE Design RPC API Example
WAE Design: WAE RPC API
WAE Design functionality accessible through an API
• Step 4: Optimize or Define the Segment Hops
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17. © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Public
WAE Design RPC API Example
WAE Design: WAE RPC API
WAE Design functionality accessible through an API
• Step 5: Deploy the model to the WAE Automation server
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WAE Design RPC API Example
WAE RPC API
WAE Design functionality accessible through an API
• Step 6: Putting the functions together
The script will need as inputs the source node, destination
node and a unique tunnel name.
Define the path on the system to store the source and
destination network models.
Import Required Libraries
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19. © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Public
WAE Design RPC API Example
WAE RPC API
WAE Design functionality accessible through an API
• Step 6: Putting the functions together
Next download the plan file and load it in
the WAE Design RPC API service
Create and Optimize the LSP
Save the plan file from the WAE Design RPC API to
the file system, then deploy that plan file to the
Automation server.
Save and Run the script
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Continue Your Education
• Demos in the Cisco campus
• Walk-in Self-Paced Labs
• Lunch & Learn
• Meet the Engineer 1:1 meetings
• Related sessions
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22. Thank you

24. © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Public
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