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JNCIS-SP lab 3 of 16

OSPF in a provider core with policy

Join a router to a working OSPF core, take over the DR role, read every LSA type, build stub and NSSA areas, and apply OSPF's limited but useful policy tools.

Run this lab

It needs Standard: its 7 nodes are set to 10 vCPU and 15,360 MB in total.

In your workspace: Shared, then JNCIS-SP JN0-364 guided labs, then 03 - OSPF in a provider core with policy

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 10 vCPU and 15,360 MB together. Every lab plan includes every guided lab.

Level
Intermediate
Time
About 90 minutes
Nodes need
10 vCPU, 15,360 MB
Smallest plan
Standard

The scenario

This is Skerry's northern core. R2 and R3 already run OSPF, and ASBR injects two external networks. R1 is new, and isn't in OSPF. You'll bring it in, take over the DR role on the core LAN, read the database, tune two areas and apply policy.

DeviceInterfaceAddressOSPF
R1ge-0/0/010.0.100.1/24Area 0, core LAN (you configure it)
R1ge-0/0/110.0.15.1/30Area 2 (you configure it)
R1ge-0/0/2, lo010.10.1.1/24, 10.255.0.1/32Area 0, passive (you configure it)
R2ge-0/0/0, lo010.0.100.2/24, 10.255.0.2/32Area 0
R2ge-0/0/110.0.23.1/30Area 1
R3ge-0/0/010.0.23.2/30Area 1
R3ge-0/0/1, lo010.30.1.1/24, 10.30.2.1/24, 10.255.0.3/32Area 1, passive
ASBRGi0/010.0.100.3/24Area 0, priority 0, redistributes 172.20.1.0/24 and 172.20.2.0/24
PARTNERGi0/010.0.15.2/30Area 2, an NSSA, redistributes 172.25.1.0/24
H1 / H3eth010.10.1.10/24 / 10.30.1.10/24Gateways .1

What you’ll practise

  • Explain the packet types, the neighbour states and the DR election
  • Read LSA types 1 to 5 and 7 from the database
  • Configure stub and NSSA areas
  • Summarise, export and import with policy
  • Use traceoptions and live captures

The tasks

  1. Neighbours and the DR
  2. Read the link-state database
  3. Stub and NSSA areas
  4. Policy: summarise, export, import
  5. Troubleshooting tools

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 in a provider core with policy7 nodes and 1 network, 7 links. Every link is listed as text below the diagram.ASBRR1R2R3PARTNERH1H3CoreLANGi0/0ge-0/0/0ge-0/0/0ge-0/0/1Gi0/0ge-0/0/1eth0ge-0/0/2eth0ge-0/0/1ge-0/0/0
7 nodes and 1 network, 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 CoreLAN (network)
  • R2 ge-0/0/0 to CoreLAN (network)
  • ASBR Gi0/0 to CoreLAN (network)
  • R2 ge-0/0/1 to R3 ge-0/0/0
  • R1 ge-0/0/1 to PARTNER Gi0/0
  • R1 ge-0/0/2 to H1 eth0
  • R3 ge-0/0/1 to H3 eth0
Nodes in OSPF in a provider core with policy, with the image each runs and the vCPU and RAM it’s set to
NodeDeviceImage in Add NodeSet to
ASBRCisco IOSvvios-adventerprisek9-m.spa.159-3.m91 vCPU, 512 MB
R1Juniper vSRX NextGen templatevsrxng-24.4R1.92 vCPU, 4,096 MB
R2Juniper vSRX NextGen templatevsrxng-24.4R1.92 vCPU, 4,096 MB
R3Juniper vSRX NextGen templatevsrxng-24.4R1.92 vCPU, 4,096 MB
PARTNERCisco IOSvvios-adventerprisek9-m.spa.159-3.m91 vCPU, 512 MB
H1VPCS hostBuilt in to EVE-NGCounted as 1 vCPU, 1,024 MB
H3VPCS 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 JNCIS-SP JN0-364 guided labs.

  3. Open 03 - OSPF in a provider core with policy 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 JNCIS-SP labs

All JNCIS-SP labs

Related labs in other courses

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.