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CCNP ENARSI lab 32 of 35

IP SLA and NetFlow v5, v9 and Flexible NetFlow

Measure voice quality across a WAN with IP SLA UDP jitter and a responder, alert on slow round trips, and see who is using the network with traditional NetFlow v5 and Flexible NetFlow v9, decoded live by a collector.

Run this lab

It needs Lite: its 4 nodes are set to 4 vCPU and 2,560 MB in total. That fits the free demo too.

In your workspace: Shared, then CCNP ENARSI 300-410 guided labs, then 32 - IP SLA and NetFlow v5 v9 and Flexible NetFlow

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Level
Intermediate
Time
About 75 minutes
Nodes need
4 vCPU, 2,560 MB
Smallest plan
Lite

The scenario

Nighthawk Media's branch office (R1) complains that video calls to head office (R3) break up in the afternoons, and nobody knows what else is using the WAN. You'll add measurement (IP SLA, which generates synthetic traffic and measures it) and visibility (NetFlow, which records real traffic) and send the flow records to a collector that decodes them live.

DeviceInterfaceAddressNotes
R1Lo0 / Lo1 / Gi0/010.255.0.1/32 / 10.32.1.1/24 / 10.32.12.1/24branch
R2Lo0 / Gi0/0 / Gi0/110.255.0.2/32 / 10.32.12.2/24 / 10.32.23.2/24WAN router: traditional NetFlow
R3Lo0 / Lo1 / Gi0/0 / Gi0/110.255.0.3/32 / 10.32.3.1/24 / 10.32.23.3/24 / 10.32.100.1/24head office: IP SLA responder, Flexible NetFlow
COLLECTOReth010.32.100.100/24NetFlow collector, UDP 2055

OSPF already connects everything.

What you’ll practise

  • Configure an IP SLA UDP jitter operation with a codec and an IP SLA responder
  • Configure an ICMP echo operation with thresholds and a reaction
  • Read jitter, latency, packet loss and MOS from IP SLA statistics
  • Configure traditional NetFlow with v5 export and read the cache
  • Configure Flexible NetFlow records, exporters and monitors with v9 export

The tasks

  1. Measure voice quality with UDP jitter
  2. Alert on slow round trips
  3. Traditional NetFlow v5 on R2
  4. Flexible NetFlow v9 on R3
  5. Where assurance fits

The Lab Tasks pane has the scenario, these tasks, the checks to run, hints and the full solution.

Topology and devices

The network as it opens in EVE-NG, drawn from the lab’s own canvas, and the image each node runs.

Topology of IP SLA and NetFlow v5 v9 and Flexible NetFlow4 nodes, 3 links. Every link is listed as text below the diagram.R1R2R3COLLECTORGi0/1eth0Gi0/0Gi0/0Gi0/1Gi0/0
4 nodes, with the interface names each link uses. On a narrow screen, scroll the diagram sideways.
Every link, as text
  • R1 Gi0/0 to R2 Gi0/0
  • R2 Gi0/1 to R3 Gi0/0
  • R3 Gi0/1 to COLLECTOR eth0
Nodes in IP SLA and NetFlow v5, v9 and Flexible NetFlow, with the image each runs and the vCPU and RAM it’s set to
NodeDeviceImage in Add NodeSet to
R1Cisco IOSvvios-adventerprisek9-m.spa.159-3.m91 vCPU, 512 MB
R2Cisco IOSvvios-adventerprisek9-m.spa.159-3.m91 vCPU, 512 MB
R3Cisco IOSvvios-adventerprisek9-m.spa.159-3.m91 vCPU, 512 MB
COLLECTOREVE-NG GUI server (Docker)eve-gui-server:latest1 vCPU, 1,024 MB

How to open this lab

  1. Sign in to your workspace at lab.cloudlabbox.com.

  2. In File Manager, open Shared, then the folder CCNP ENARSI 300-410 guided labs.

  3. Open 32 - IP SLA and NetFlow v5 v9 and Flexible NetFlow and start its nodes, then open Lab Tasks for the scenario and the steps.

The lab is read-only. You can start the nodes and configure the devices, but changes to the topology can’t be saved. To change it, rebuild it in your own folder.

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CloudLabBox is independent of Cisco. The lab follows exam topics and isn’t vendor training material; vendor names identify the exams and the images in the workspace.