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JNCIP-ENT lab 1 of 19

OSPF areas LSAs stub and NSSA

Bring two Junos routers into a multi-area OSPF network and read every LSA type, then shrink the branch databases with a totally stubby area, an NSSA and summaries.

Run this lab

It needs Standard: its 5 nodes are set to 11 vCPU and 11,776 MB in total.

In your workspace: Shared, then JNCIP-ENT JN0-650 guided labs, then 01 - OSPF areas LSAs stub and NSSA

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 11 vCPU and 11,776 MB together. Every lab plan includes every guided lab.

Level
Advanced
Time
About 90 minutes
Nodes need
11 vCPU, 11,776 MB
Smallest plan
Standard

The scenario

Northmere Logistics runs OSPF between its head office and two depots. R3 (Whitby) and R4 (Selby) are branch routers that already run OSPF, and R5 is the server-room router in the backbone. It redistributes a partner network, so it's an ASBR. R4 also redistributes a static route. You own R1 and R2. You'll bring them in as area border routers, read every LSA type that this causes, then shrink the branch databases with stub and not-so-stubby areas and summaries.

DeviceInterfaceAddressOSPF
R1ge-0/0/010.0.12.1/30Area 0, to R2, point-to-point
R1ge-0/0/110.0.15.1/24Area 0, broadcast, to R5
R1ge-0/0/210.0.13.1/30Area 1, to R3, point-to-point
R1lo010.255.0.1/32Area 0, passive
R2ge-0/0/010.0.12.2/30Area 0, to R1, point-to-point
R2ge-0/0/110.0.24.1/30Area 2, to R4, point-to-point
R2lo010.255.0.2/32Area 0, passive
R3Gi0/0, Lo010.0.13.2/30, 10.255.0.3/32Area 1
R3Lo10, Lo1110.31.1.1/24, 10.31.2.1/24Area 1, Whitby LANs
R4Gi0/0, Lo010.0.24.2/30, 10.255.0.4/32Area 2
R4Lo1010.41.1.1/24Area 2, Selby LAN
R4static172.16.40.0/24Redistributed
R5Gi0/0, Lo010.0.15.5/24, 10.255.0.5/32Area 0
R5static172.16.50.0/24Redistributed

What you’ll practise

  • Read router, network, summary, ASBR summary, external and NSSA LSAs
  • Build totally stubby and not-so-stubby areas on Junos
  • Originate defaults into stub areas and NSSAs
  • Summarise and filter at an ABR with area-range
  • Set a sensible reference bandwidth

The tasks

  1. Build the backbone and read types 1 and 2
  2. Join the areas and read types 3, 4 and 5
  3. Make area 1 totally stubby
  4. Make area 2 an NSSA
  5. Summarise at the ABR
  6. Set a cost that suits gigabit links

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 OSPF areas LSAs stub and NSSA5 nodes, 4 links. Every link is listed as text below the diagram.R1R2R3R4R5ge-0/0/2Gi0/0ge-0/0/1Gi0/0ge-0/0/1Gi0/0ge-0/0/0ge-0/0/0
5 nodes, with the interface names each link uses. On a narrow screen, scroll the diagram sideways.
Every link, as text
  • R1 ge-0/0/0 to R2 ge-0/0/0
  • R1 ge-0/0/1 to R5 Gi0/0
  • R1 ge-0/0/2 to R3 Gi0/0
  • R2 ge-0/0/1 to R4 Gi0/0
Nodes in OSPF areas LSAs stub and NSSA, with the image each runs and the vCPU and RAM it’s set to
NodeDeviceImage in Add NodeSet to
R1Juniper vJunos-routervjunosrouter-24.2R1-S2.54 vCPU, 5,120 MB
R2Juniper vJunos-routervjunosrouter-24.2R1-S2.54 vCPU, 5,120 MB
R3Cisco IOSvvios-adventerprisek9-m.spa.159-3.m91 vCPU, 512 MB
R4Cisco IOSvvios-adventerprisek9-m.spa.159-3.m91 vCPU, 512 MB
R5Cisco IOSvvios-adventerprisek9-m.spa.159-3.m91 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 JNCIP-ENT JN0-650 guided labs.

  3. Open 01 - OSPF areas LSAs stub and NSSA 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 Cisco and Juniper Networks. The lab follows exam topics and isn’t vendor training material; vendor names identify the exams and the images in the workspace.