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Cisco NX-OS data centre lab 12 of 15

Checkpoints, rollback and monitoring

Make a change safely. Take a checkpoint, break something on purpose, read exactly what changed and roll it back in one command. Then look at how a Nexus switch is monitored: SPAN, on-box capture and logs, and what this virtual image can and can't show.

Run this lab

It needs Lite: its 4 nodes are set to 5 vCPU and 7,680 MB in total. That fits the free demo too.

In your workspace: Shared, then Cisco Nexus NX-OS data centre guided labs, then 12 - Checkpoints rollback and monitoring

Try it free for 30 minutesRun it on Lite from £3 a day

The free demo needs no card and no email. Every lab plan includes every guided lab.

Level
Intermediate
Time
About 60 minutes
Nodes need
5 vCPU, 7,680 MB
Smallest plan
Lite

The scenario

Hall 3 has its first change window tonight, and the change manager has one rule: every change must have a way back. You'll rehearse on N1 by making a bad change and undoing it. Then you'll set up the tools the operations team uses to see what's on the wire.

ItemValue
Ethernet1/1Uplink to R1, OSPF area 0, 10.1.1.0/30
H110.10.10.11 in VLAN 10 on Ethernet1/5, gateway .1
H2The analyser, on Ethernet1/6, no address
R1 loopback10.255.0.11

What you’ll practise

  • Create, list and compare checkpoints
  • Roll back atomically, and explain the three rollback modes
  • Save a checkpoint as a file
  • Configure a SPAN session, and read its state
  • Capture control-plane traffic with Ethanalyzer
  • Describe NetFlow, streaming telemetry, Nexus Dashboard and software updates

The tasks

  1. Start the lab
  2. Take a checkpoint
  3. Make a bad change
  4. See what changed
  5. Roll it back
  6. SPAN
  7. See the control plane

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 Checkpoints rollback and monitoring4 nodes, 3 links. Every link is listed as text below the diagram.N1R1H1H2e5eth0e6eth0e1Gi0/0
4 nodes, with the interface names each link uses.
Every link, as text
  • N1 e1 to R1 Gi0/0
  • N1 e5 to H1 eth0
  • N1 e6 to H2 eth0
Nodes in Checkpoints, rollback and monitoring, with the image each runs and the vCPU and RAM it’s set to
NodeDeviceImage in Add NodeSet to
N1Cisco Nexus 9000vnxosv9k-9300v-9.3.102 vCPU, 6,144 MB
R1Cisco IOSvvios-adventerprisek9-m.SPA.159-3.M61 vCPU, 512 MB
H1Alpine Linuxclbalpinebase-alpine-base-3-20-31 vCPU, 512 MB
H2Alpine Linuxclbalpinebase-alpine-base-3-20-31 vCPU, 512 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 Cisco Nexus NX-OS data centre guided labs.

  3. Open 12 - Checkpoints rollback and monitoring 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.

More Cisco NX-OS data centre labs

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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.