NHPREP — Hands-On CCNA, CCNP, CCIE Labs & Networking Courses

Objective

This lesson introduces how AI transforms SD‑WAN operations — moving from reactive troubleshooting to predictive recommendations and autonomous policy application. You will learn the architecture and operational flow of predictive path recommendations, Network Wide Path Insights (NWPI) metadata, and the AI Assistant in SD‑WAN Manager. In production, these features let operators forecast application degradation, recommend better paths (e.g., prefer a private link over a degraded MPLS), and safely apply changes via closed‑loop automation to improve user experience.

Real-world scenario: A distributed enterprise with hundreds of sites, mixed MPLS and Internet links, and heavy SaaS usage wants to proactively reduce application issues for Office 365 and Webex by using SD‑WAN analytics to recommend and apply better transport selection automatically.

Topology & Device Table

ASCII topology (interfaces show exact IP addresses used in this lesson):

Device Table

Device	Interface	IP Address	Subnet Mask	Role
EdgeRouter-SiteA	Gig0/0	10.10.1.1	255.255.255.0	Site A LAN gateway
EdgeRouter-SiteA	Gig0/1	172.16.1.1	255.255.255.252	Uplink to ISP / SD‑WAN overlay
EdgeRouter-SiteA	VPN0	169.254.1.1	255.255.255.252	SD‑WAN overlay / NWPI metadata domain
SD-WAN Manager	mgmt0	192.0.2.10	255.255.255.0	Central management & analytics
Admin PC	eth0	192.0.2.11	255.255.255.0	Operator workstation
Analytics Collector	eth0	192.0.2.20	255.255.255.0	SD‑WAN telemetry ingest & processing
ISP Router	eth0	203.0.113.1	255.255.255.0	Upstream Internet
Branch Server	eth0	10.10.1.20	255.255.255.0	Application endpoint (Webex/Office365)

Important: Domain names in examples use lab.nhprep.com and default passwords are Lab@123.

Key Concepts (theory before CLI)

Network Wide Path Insights (NWPI): NWPI inserts metadata into SD‑WAN headers so that each hop in the SD‑WAN fabric can collect flow-level telemetry and correlate it back to the SD‑WAN Manager. In production, NWPI enables per‑flow path visibility (loss, delay, jitter) as traffic traverses multiple transports.
- Protocol behavior: NWPI metadata is written by the ingress router into the SD‑WAN header. Subsequent hops read this metadata and append observational data before forwarding telemetry to the manager for correlation.
Predictive Path Recommendations: Machine learning analyzes historical and streaming telemetry to forecast path degradations and recommends switching traffic to a better path (e.g., prefer private2 over a degraded private1 + private2 load balance).
- Why it matters: Rather than reacting to outages, the system predicts quality drops and suggests policy changes that improve application experience by an estimated percent gain.
Closed‑Loop Automation (AAR Policy application): When a recommendation is applied, the manager creates a copy of the centralized Application Aware Routing (AAR) policy, adjusts site lists and sequences for the affected App group, and applies it to the target site. If you later change the centralized policy, the system may revert recommendations; understanding this lifecycle is crucial in production.
AI Assistant for Networking: An LLM‑based assistant can fetch documentation or operational insights (health, recommendations). It uses RAG (retrieval‑augmented generation) to answer queries from the SD‑WAN Manager dataset for faster operator workflows.
- Practical point: This assistant is for operational guidance; actions that modify policies should be verified by operators before applying closed‑loop changes.
Analogy: Think of NWPI as adding a passport to each packet so each router can stamp observational data — when collected centrally, you get a travel log for the packet's journey.

Step-by-step configuration

Note: The following steps use representative SD‑WAN Manager CLI and show commands to illustrate the workflow. In many real deployments, a GUI is used for these actions; however, equivalent API/CLI commands are shown for completeness.

Step 1: Enable NWPI Trace on the SD‑WAN Manager

What we are doing: Enable NWPI tracing to instruct the fabric to write and collect NWPI metadata. This allows per‑flow telemetry collection required for path insights and predictive models.

sdwan# configure terminal
sdwan(config)# analytics nwpi trace enable
sdwan(config)# analytics nwpi trace capture on
sdwan(config)# exit
sdwan# write memory

What just happened:

analytics nwpi trace enable enables the NWPI trace subsystem on the manager so traces can be created and collected.
analytics nwpi trace capture on starts live capture of NWPI metadata for flows, which will be correlated by the manager.
write memory saves the change to persistent configuration.

Real-world note: Enabling NWPI captures increases telemetry volume; ensure your analytics collectors have capacity to process the additional data.

Verify:

sdwan# show analytics nwpi status
NWPI Trace Status: enabled
Capture: on
Active Traces: 1
Trace Details:
  Trace ID: trace-001
  Created By: admin
  Filters: site=SiteA, appGroup=Office365
  Start Time: 2026-04-02 09:00:00 UTC


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cisco
EdgeRouter-SiteA# show sdwan nwpi status
NWPI Agent: enabled
NWPI Header Write: active
Telemetry Endpoint: 192.0.2.10:443
EdgeRouter-SiteA# exit

What just happened:

The edge router reports NWPI is active, meaning it will write the SD‑WAN header metadata into outgoing packets.
Telemetry endpoint points to the SD‑WAN Manager (192.0.2.10), showing where telemetry will be sent.

Real-world note: If telemetry endpoint is unreachable, NWPI data cannot be correlated; ensure management network reachability to the manager and that firewalls allow telemetry ports.

Verify:

sdwan# show analytics nwpi flows site SiteA
Site: SiteA
Flows:
  Flow ID: f-1001
  Src: 10.10.1.10:5060
  Dst: 52.84.1.10:443
  Path Observations:
    Hop1 (SiteA): loss=0%, latency=2ms, jitter=1ms
    Hop2 (ISP): loss=0.5%, latency=30ms, jitter=8ms
  LastSeen: 2026-04-02 09:05:12 UTC


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</div>

cisco
sdwan# show analytics predictive recommendations app-group Office365
Recommendations for App Group: Office365
Site: SiteA
Current Policy: load-balance private1,private2
Recommendation ID: rec-20260402-01
Recommended Path: private2
Estimated Improvement: 18% app quality gain
Recommendation Rationale:
  - private1 trending increased loss (+6% over 24h)
  - private2 lower jitter and latency
Created: 2026-04-02 09:10:00 UTC

What just happened:

The manager ran predictive analytics against NWPI and other telemetry for the Office365 app group and presented a recommendation to prefer private2.
The output includes estimated improvement and rationale (loss/jitter trends), so operators understand the decision context.

Real-world note: Recommendations are probabilistic; verify the recommendation window and correlating events (maintenance, ISP incidents) before applying changes.

Verify:

sdwan# show analytics predictive recommendations rec-20260402-01 detail
Recommendation ID: rec-20260402-01
App Group: Office365
Affected Sites: SiteA
Current AAR Sequence: LB(private1,private2)
Recommended AAR Sequence: use(private2)
Quality Graphs: attached
Risk Level: medium

Step 4: Apply Recommendation via Closed‑Loop Automation (AAR Policy)

What we are doing: Apply the recommendation to create a copy of the centralized AAR policy and push the modified sequence to SiteA. This demonstrates closed‑loop automation that changes forwarding behavior automatically.

sdwan# configure terminal
sdwan(config)# policy aar clone central-policy name central-policy-rec-20260402-01
sdwan(config)# policy aar central-policy-rec-20260402-01 sequence Office365 use private2
sdwan(config)# policy aar apply central-policy-rec-20260402-01 site-list SiteA
sdwan(config)# exit
sdwan# write memory

What just happened:

policy aar clone created a copy of the centralized AAR policy so the original remains intact.
sequence Office365 use private2 modifies the App Group sequence to prefer private2.
apply ... site-list SiteA deploys the modified policy only to SiteA, implementing the recommendation on the target site.
The manager will track this change and include it in the recommendation lifecycle for potential rollback.

Real-world note: The system will revert recommended changes if the operator later changes the centralized AAR policy; maintain change records and coordinate with policy owners.

Verify:

sdwan# show policy aar applied site SiteA
Site: SiteA
Applied AAR Policy: central-policy-rec-20260402-01
Office365: sequence use private2
Applied Time: 2026-04-02 09:15:30 UTC
Status: success


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</div>

cisco
sdwan# ai assistant query "Show recommendation rec-20260402-01 and site health SiteA"
AI Assistant Response:
  Recommendation rec-20260402-01 recommends switching Office365 to private2 for SiteA
  Estimated improvement: 18%
  SiteA Health Summary:
    Tunnels OK: 2/2
    Recent Loss Events: private1 experienced 3 events in last 6 hours
    NWPI Flows: 127 active
  Suggested Next Steps:
    - Apply recommendation (if approved)
    - Monitor NWPI for 30 minutes post-deploy

What just happened:

The AI Assistant returned a concise, RAG-backed summary combining recommendation details and real-time health metrics. This reduces time to decision for operators.

Real-world note: The AI Assistant is for informational support. Always validate automated recommendations against operational context (maintenance windows, business SLAs).

Verify:

sdwan# show ai assistant history last 5
1) Query: Show recommendation rec-20260402-01 and site health SiteA
   Time: 2026-04-02 09:16:10 UTC
   Response: (see above)

Verification Checklist

Check 1: NWPI tracing is enabled on SD‑WAN Manager — verify with show analytics nwpi status and ensure Capture: on.
Check 2: EdgeRouter-SiteA reports NWPI header writing and telemetry endpoint — verify with show sdwan nwpi status on the edge router.
Check 3: A predictive recommendation exists for Office365 with an estimated improvement — verify with show analytics predictive recommendations app-group Office365.
Check 4: The recommended AAR policy copy is applied to SiteA — verify with show policy aar applied site SiteA.
Check 5: AI Assistant returned a coherent summary for the recommendation — verify with show ai assistant history last 5.

Common Mistakes

Symptom	Cause	Fix
No NWPI flows visible on the manager	NWPI trace not enabled or telemetry blocked	Enable NWPI (`analytics nwpi trace enable`) and allow telemetry to 192.0.2.10 in firewall
Recommendation cites old data / no recent trends	Telemetry ingestion delayed or collector overloaded	Check analytics collector resource usage and confirm real‑time capture (`analytics nwpi trace capture on`)
Applied recommendation reverted unexpectedly	Centralized AAR policy was later modified causing revert action	Coordinate centralized policy changes; reapply recommendations in bulk after central edits
AI Assistant returns incomplete info	Manager lacks connectivity to knowledge sources or RAG index outdated	Ensure manager connectivity to cloud documentation sources if required; refresh RAG index and requery

Key Takeaways

NWPI is the telemetry foundation: It adds metadata to track flow behavior across the SD‑WAN fabric; without NWPI, predictions lack flow‑level detail.
Predictive recommendations are actionable intelligence, not automatic fixes — closed‑loop automation provides a safe way to apply policy changes, but operators must manage policy lifecycle and potential reverts.
AI Assistant accelerates operations by summarizing recommendations and health; however, always validate suggested changes within your operational context (maintenance windows, SLAs).
In production, plan capacity for increased telemetry, audit all automated changes, and maintain a rollback strategy when applying predictive recommendations.

Final tip: Treat predictive recommendations as a modern NOC tool — they surface likely improvements, but successful adoption requires process controls (approval, change management) and verification using NWPI telemetry after changes.

AI in SD-WAN Operations

Objective

Topology & Device Table

Key Concepts (theory before CLI)

Step-by-step configuration

Step 1: Enable NWPI Trace on the SD‑WAN Manager

Step 4: Apply Recommendation via Closed‑Loop Automation (AAR Policy)

Verification Checklist

Common Mistakes

Key Takeaways