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Nokia SR OS NRS I lab 8 of 14

RSVP-TE paths and protection

Steer an LSP along an explicit path with RSVP-TE, add a standby secondary and fast reroute, and fail the primary to see protection work.

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 08 - RSVP-TE paths and protection

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 60 minutes
Nodes need
6 vCPU, 14,400 MB
Smallest plan
Standard

The scenario

LDP gives Rivermark tunnels, but they always follow the IGP's shortest path. The R1 to R3 link is the short way, but it's a leased circuit the company wants to keep for backup, so traffic between Ashby and Cardew should go the long way round through R2 unless something fails.

OSPF with traffic engineering is already running. You'll turn on MPLS and RSVP, then build an explicit LSP with a primary path, a standby, and fast reroute.

DeviceInterfacePortAddressConnects to
R1system-10.255.0.1/32
R1to-R21/1/c1/110.0.12.1/30R2
R1to-R31/1/c2/110.0.13.1/30R3
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-R11/1/c1/110.0.13.2/30R1
R3to-R21/1/c2/110.0.23.2/30R2

What you’ll practise

  • Enable MPLS and RSVP on interfaces
  • Write strict and dynamic paths
  • Build an LSP with primary and standby secondary paths
  • Add facility fast reroute
  • Test an LSP with OAM and watch a failover

The tasks

  1. Why RSVP-TE
  2. Turn on MPLS and RSVP
  3. Build the LSP
  4. Test it
  5. Fail the primary
  6. Add fast reroute

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 RSVP-TE paths and protection3 nodes, 3 links. Every link is listed as text below the diagram.R1R2R3p1/1/2p1/1/1p1/1/2p1/1/2p1/1/1p1/1/1
3 nodes, with the interface names each link uses.
Every link, as text
  • R1 p1/1/1 to R2 p1/1/1
  • R1 p1/1/2 to R3 p1/1/1
  • R2 p1/1/2 to R3 p1/1/2
Nodes in RSVP-TE paths and protection, 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 08 - RSVP-TE paths and protection 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 Nokia. The lab follows exam topics and isn’t vendor training material; vendor names identify the exams and the images in the workspace.