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MikroTik MTCINE lab 11 of 12

Traffic engineering with RSVP-TE - static and CSPF paths

Fernvale's IGP sends everything over the south path while the north path sits idle. Advertise link bandwidth with OSPF TE, build an RSVP-TE tunnel on an explicit path with a reservation for a broadcaster's VPLS, watch the pseudowire move onto it, then let CSPF place more tunnels and refuse one that doesn't fit.

Run this lab

It needs Lite: its 6 nodes are set to 6 vCPU and 1,536 MB in total. That fits the free demo too.

In your workspace: Shared, then MikroTik MTCINE RouterOS v7 guided labs, then 11 - Traffic engineering with RSVP-TE - static and CSPF paths

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

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Level
Advanced
Time
About 90 minutes
Nodes need
6 vCPU, 1,536 MB
Smallest plan
Lite

The scenario

Kestrel Media, a regional broadcaster, rents a layer 2 contribution link from its studio (CE1, on PE1) to its transmitter site (CE4, on PE4). It is an LDP VPLS (lab 7), and it already works. Kestrel's contract says 10 Mbit/s guaranteed, on a path kept away from Fernvale's busy south links. Today OSPF sends everything, Kestrel included, over the south path (cost 1 per link), and the north path (cost 10) is idle. You'll fix that with RSVP-TE.

RouterLoopbackNorth linkSouth link
PE110.255.255.1ether1 10.0.12.1/30 to P2ether2 10.0.13.1/30 to P3
P210.255.255.2ether1 10.0.12.2/30, ether2 10.0.24.1/30
P310.255.255.3ether1 10.0.13.2/30, ether2 10.0.34.1/30
PE410.255.255.4ether1 10.0.24.2/30 to P2ether2 10.0.34.2/30 to P3

Every core link counts as 100 Mbit/s for traffic engineering.

What you’ll practise

  • Explain what traffic engineering adds to IGP routing: constraints, explicit paths and reservations
  • Advertise TE link information with /mpls traffic-eng interface and OSPF TE extensions
  • Build RSVP-TE tunnels on a static explicit path and on a dynamic CSPF path
  • Read tunnel, RSVP flow and remaining-bandwidth state, and explain admission control
  • Steer a VPLS pseudowire onto a TE tunnel, and explain bandwidth allocation versus bandwidth limitation

The tasks

  1. See where the traffic goes today
  2. Tell the network about bandwidth
  3. A tunnel on an explicit path
  4. Put Kestrel's pseudowire on the tunnel, in both directions
  5. Allocation and limitation
  6. Let CSPF place the next tunnels, and watch admission control

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 Traffic engineering with RSVP-TE - static and CSPF paths6 nodes, 6 links. Every link is listed as text below the diagram.PE1P2P3PE4CE1CE4ether3ether1ether3ether1ether1ether1ether2ether1ether2ether1ether2ether2
6 nodes, with the interface names each link uses. On a narrow screen, scroll the diagram sideways.
Every link, as text
  • PE1 ether1 to P2 ether1
  • PE1 ether2 to P3 ether1
  • P2 ether2 to PE4 ether1
  • P3 ether2 to PE4 ether2
  • PE1 ether3 to CE1 ether1
  • PE4 ether3 to CE4 ether1
Nodes in Traffic engineering with RSVP-TE - static and CSPF paths, with the image each runs and the vCPU and RAM it’s set to
NodeDeviceImage in Add NodeSet to
PE1MikroTik RouterOSmikrotik-7.14.21 vCPU, 256 MB
P2MikroTik RouterOSmikrotik-7.14.21 vCPU, 256 MB
P3MikroTik RouterOSmikrotik-7.14.21 vCPU, 256 MB
PE4MikroTik RouterOSmikrotik-7.14.21 vCPU, 256 MB
CE1MikroTik RouterOSmikrotik-7.14.21 vCPU, 256 MB
CE4MikroTik RouterOSmikrotik-7.14.21 vCPU, 256 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 MikroTik MTCINE RouterOS v7 guided labs.

  3. Open 11 - Traffic engineering with RSVP-TE - static and CSPF paths 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 MikroTik. The lab follows exam topics and isn’t vendor training material; vendor names identify the exams and the images in the workspace.