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HCIP-Datacom Core lab 3 of 14

IS-IS levels and route control

Build a two-area IS-IS network from scratch: NETs, levels, DIS election, point-to-point links, the default route from the attached bit, route leaking into Level-1, summarisation and authentication.

Run this lab

It needs Standard: its 6 nodes are set to 6 vCPU and 10,240 MB in total.

In your workspace: Shared, then HCIP-Datacom Core H12-821 guided labs, then 03 - IS-IS levels and route control

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 10,240 MB together. Every lab plan includes every guided lab.

Level
Advanced
Time
About 85 minutes
Nodes need
6 vCPU, 10,240 MB
Smallest plan
Standard

The scenario

Northwind has bought a regional carrier whose engineers swear by IS-IS, and the new Scotland network is to run it. There are two areas. Glasgow (49.0001) has R1 and its boundary router R2. Edinburgh (49.0002) has R3 and R4. Only the addresses are in place: you build the whole of IS-IS, and tune it so small Level-1 routers stay small.

RouterNETLevelLoopBack0GE0/0/0GE0/0/1
R149.0001.0000.0000.0001.00Level-11.1.1.110.0.12.1/24192.168.1.1/24 (PC1 .10)
R249.0001.0000.0000.0002.00Level-1-22.2.2.210.0.12.2/2410.0.23.2/24
R349.0002.0000.0000.0003.00Level-1-23.3.3.310.0.23.3/2410.0.34.3/24
R449.0002.0000.0000.0004.00Level-14.4.4.410.0.34.4/24192.168.4.1/24 (PC2 .10)

R4 also has LoopBack1-3, 192.168.5.1/24 to 192.168.7.1/24, for the Edinburgh offices.

What you’ll practise

  • Read and write a NET, and pick the right level for each router
  • Explain which adjacencies form between Level-1, Level-2 and Level-1-2 routers
  • Control the DIS on a LAN, and change a link to point-to-point
  • Follow the ATT bit to a Level-1 default route, and leak a specific route down to Level-1
  • Summarise at the level boundary, and authenticate IS-IS

The tasks

  • Task 0: Load the starting configuration
  • Concept: NETs and levels
  • Task 1: Build IS-IS
  • Concept: DIS on a LAN
  • Task 2: Fix the DIS and tidy the R2 to R3 link
  • Concept: how Level-1 gets out
  • Task 3: Read the Level-1 view
  • Concept: leaking routes down
  • Task 4: Leak Edinburgh's loopback to R1
  • Concept: summarising in IS-IS
  • Task 5: Summarise the Edinburgh offices
  • Concept: authentication
  • Task 6: Authenticate the backbone

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 IS-IS levels and route control6 nodes, 5 links. Every link is listed as text below the diagram.R1R2R3R4PC1PC2GE0/0/1eth0GE0/0/1eth0GE0/0/0GE0/0/0GE0/0/1GE0/0/0GE0/0/1GE0/0/0
6 nodes, with the interface names each link uses. On a narrow screen, scroll the diagram sideways.
Every link, as text
  • R1 GE0/0/0 to R2 GE0/0/0
  • R2 GE0/0/1 to R3 GE0/0/0
  • R3 GE0/0/1 to R4 GE0/0/0
  • R1 GE0/0/1 to PC1 eth0
  • R4 GE0/0/1 to PC2 eth0
Nodes in IS-IS levels and route control, with the image each runs and the vCPU and RAM it’s set to
NodeDeviceImage in Add NodeSet to
R1Huawei AR1000V routerhuaweiar1k-5.170-V300R022C00SPC100-Auto-update-esn1 vCPU, 2,048 MB
R2Huawei AR1000V routerhuaweiar1k-5.170-V300R022C00SPC100-Auto-update-esn1 vCPU, 2,048 MB
R3Huawei AR1000V routerhuaweiar1k-5.170-V300R022C00SPC100-Auto-update-esn1 vCPU, 2,048 MB
R4Huawei AR1000V routerhuaweiar1k-5.170-V300R022C00SPC100-Auto-update-esn1 vCPU, 2,048 MB
PC1VPCS hostBuilt in to EVE-NGCounted as 1 vCPU, 1,024 MB
PC2VPCS hostBuilt in to EVE-NGCounted as 1 vCPU, 1,024 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 HCIP-Datacom Core H12-821 guided labs.

  3. Open 03 - IS-IS levels and route control 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 Huawei. The lab follows exam topics and isn’t vendor training material; vendor names identify the exams and the images in the workspace.