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Aruba CX lab 2 of 16

VLANs and trunks with the native VLAN and LLDP

Split a flat network into VLANs on two AOS-CX switches, carry them over an 802.1Q trunk with a deliberate native VLAN, document the cabling with LLDP and read the MAC address table.

Run this lab

It needs Lite: its 4 nodes are set to 6 vCPU and 7,168 MB in total. That fits the free demo too.

In your workspace: Shared, then HPE Aruba Networking CX switching guided labs, then 02 - VLANs and trunks with the native VLAN and LLDP

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Level
Beginner
Time
About 50 minutes
Nodes need
6 vCPU, 7,168 MB
Smallest plan
Lite

The scenario

Northwind Logistics' warehouse office is a single flat network. You'll introduce VLANs: users in VLAN 10, label printers in VLAN 20, and switch management in VLAN 99. The access switch acc1 connects to core1 with one cable that must carry all three VLANs, with management travelling untagged as the trunk's native VLAN. Routing between VLANs comes in lab 5; today is pure layer 2.

DevicePortModeVLANsConnects to
core11/1/1trunknative 99, allowed 10, 20, 99acc1 1/1/1
core11/1/2access10h11 (10.10.10.11/24)
acc11/1/1trunknative 99, allowed 10, 20, 99core1 1/1/1
acc11/1/2access10h10 (10.10.10.10/24)
acc11/1/3access20(printer, not connected)
core1 / acc1VLAN 99 interface–10.0.99.1/24 / 10.0.99.2/24–

What you’ll practise

  • Explain why AOS-CX ports may be routed by default and turn them into layer 2 ports
  • Create named VLANs and assign access ports
  • Build a trunk with a native VLAN and an allowed-VLAN list
  • Manage a switch through a VLAN interface in the management VLAN
  • Read LLDP neighbours, the VLAN table and the MAC address table

The tasks

  1. Look before you change: LLDP and port state
  2. Create the VLANs
  3. Access ports
  4. The trunk
  5. Management in VLAN 99
  6. Hosts and the MAC address table

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 VLANs and trunks with the native VLAN and LLDP4 nodes, 3 links. Every link is listed as text below the diagram.core1acc1h11h101/1/11/1/11/1/2eth01/1/2eth0
4 nodes, with the interface names each link uses. On a narrow screen, scroll the diagram sideways.
Every link, as text
  • core1 1/1/1 to acc1 1/1/1
  • core1 1/1/2 to h11 eth0
  • acc1 1/1/2 to h10 eth0
Nodes in VLANs and trunks with the native VLAN and LLDP, with the image each runs and the vCPU and RAM it’s set to
NodeDeviceImage in Add NodeSet to
core1Aruba AOS-CX virtual switcharubacx-10.142 vCPU, 3,072 MB
acc1Aruba AOS-CX virtual switcharubacx-10.142 vCPU, 3,072 MB
h11Alpine Linuxclbalpinebase-alpine-base-3-20-31 vCPU, 512 MB
h10Alpine 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 HPE Aruba Networking CX switching guided labs.

  3. Open 02 - VLANs and trunks with the native VLAN and LLDP 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 Aruba CX labs

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