CloudLabBox
Try the free demo

Nokia SR OS NRS I lab 7 of 14

MPLS with LDP

Turn on LDP across a three-router core, read the sessions, bindings and tunnel table, and prove an LSP with lsp-ping and lsp-trace.

Run this lab

It needs Standard: its 3 nodes are set to 6 vCPU and 14,400 MB in total.

In your workspace: Shared, then Nokia SR OS NRS I guided labs, then 07 - MPLS with LDP

Run it on Standard from £5 a day

The free demo can’t run it: it has 6 vCPU and 8 GB, and this lab’s nodes need 6 vCPU and 14,400 MB together. Every lab plan includes every guided lab.

Level
Intermediate
Time
About 50 minutes
Nodes need
6 vCPU, 14,400 MB
Smallest plan
Standard

The scenario

Rivermark's core carries IP on OSPF, but every service the company sells needs MPLS tunnels between its edge routers. R1 at Ashby and R3 at Cardew are the edge. R2 at Brenton sits in the middle as a transit router. OSPF is already running, so every system address is reachable.

Your job is to turn on LDP, watch labels get handed out, and prove a tunnel from R1 to R3 with MPLS OAM tools rather than plain ping.

DeviceInterfacePortAddressConnects to
R1system-10.255.0.1/32
R1to-R21/1/c1/110.0.12.1/30R2
R2system-10.255.0.2/32
R2to-R11/1/c1/110.0.12.2/30R1
R2to-R31/1/c2/110.0.23.1/30R3
R3system-10.255.0.3/32
R3to-R21/1/c1/110.0.23.2/30R2

What you’ll practise

  • Explain push, swap, pop and PHP
  • Enable LDP on interfaces in both CLIs
  • Read LDP discovery, sessions and bindings
  • Use the tunnel table
  • Test an LSP with MPLS OAM

The tasks

  1. See what's missing
  2. Turn on LDP
  3. Read the labels
  4. Prove the tunnel

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 MPLS with LDP3 nodes, 2 links. Every link is listed as text below the diagram.R1R2R3p1/1/1p1/1/1p1/1/2p1/1/1
3 nodes, with the interface names each link uses. On a narrow screen, scroll the diagram sideways.
Every link, as text
  • R1 p1/1/1 to R2 p1/1/1
  • R2 p1/1/2 to R3 p1/1/1
Nodes in MPLS with LDP, with the image each runs and the vCPU and RAM it’s set to
NodeDeviceImage in Add NodeSet to
R1Nokia Integrated router (VSR NG template)timos-ng-21.10.R12 vCPU, 4,800 MB
R2Nokia Integrated router (VSR NG template)timos-ng-21.10.R12 vCPU, 4,800 MB
R3Nokia Integrated router (VSR NG template)timos-ng-21.10.R12 vCPU, 4,800 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 Nokia SR OS NRS I guided labs.

  3. Open 07 - MPLS with LDP 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 Nokia SR OS NRS I labs

All Nokia SR OS NRS I labs

Related labs in other courses

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