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JNCIP-ENT lab 10 of 19

SSM scoping and multicast policy

Take control of multicast: receive a channel with SSM and no RP, map an IGMPv2 host onto it, keep a group inside a scope, and refuse joins with IGMP and PIM policy.

Run this lab

It needs Professional: its 6 nodes are set to 15 vCPU and 18,432 MB in total.

In your workspace: Shared, then JNCIP-ENT JN0-650 guided labs, then 10 - SSM scoping and multicast policy

Run it on Professional from £7.50 a day

The free demo can’t run it: it has 6 vCPU and 8 GB, and this lab’s nodes need 15 vCPU and 18,432 MB together. Every lab plan includes every guided lab.

Level
Advanced
Time
About 80 minutes
Nodes need
15 vCPU, 18,432 MB
Smallest plan
Professional

The scenario

Now Northmere wants control. The video server should reach viewers with no RP at all, and viewers that can't speak IGMPv3 still need the stream. Some groups must stay inside the head office, a depot shouldn't be able to join certain groups, and one router should refuse joins for others. These are the multicast equivalents of routing policy. H1 is the source. H3 is behind R3, whose LAN runs IGMPv3, and H2 is behind R2, which runs the default IGMPv2. R2 is the RP.

DeviceInterfaceAddressLink
R1ge-0/0/0, ge-0/0/110.0.12.1/30, 10.0.13.1/30To R2, to R3
R1ge-0/0/2, lo010.1.1.1/24, 10.255.0.1/32H1's LAN
R2ge-0/0/0, ge-0/0/110.0.12.2/30, 10.0.23.1/30To R1, to R3
R2ge-0/0/2, lo010.2.2.1/24, 10.255.0.2/32H2's LAN
R3ge-0/0/0, ge-0/0/110.0.13.2/30, 10.0.23.2/30To R1, to R2
R3ge-0/0/2, lo010.3.3.1/24, 10.255.0.3/32H3's LAN
H1, H2, H3eth010.1.1.10, 10.2.2.10, 10.3.3.10Gateway is .1 on each LAN

OSPF and PIM sparse mode are running, with R2 as the RP. R3's LAN starts at IGMPv3 so that H3 never falls back to version 2. A Linux host that hears a version 2 query stays in that mode for several minutes.

What you’ll practise

  • Explain ASM and SSM, and use IGMPv3 channels
  • Configure an SSM map
  • Configure a multicast scope
  • Filter with IGMP group policy and PIM import policy

The tasks

  1. Receive a channel with SSM
  2. Map an IGMPv2 host to a source
  3. Set a scope boundary
  4. Filter joins with IGMP and PIM policy

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 SSM scoping and multicast policy6 nodes, 6 links. Every link is listed as text below the diagram.R1R2R3H1H2H3ge-0/0/2eth0ge-0/0/2eth0ge-0/0/2eth0ge-0/0/1ge-0/0/1ge-0/0/0ge-0/0/0ge-0/0/1ge-0/0/0
6 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 R3 ge-0/0/0
  • R2 ge-0/0/1 to R3 ge-0/0/1
  • R1 ge-0/0/2 to H1 eth0
  • R2 ge-0/0/2 to H2 eth0
  • R3 ge-0/0/2 to H3 eth0
Nodes in SSM scoping and multicast policy, 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
R3Juniper vJunos-routervjunosrouter-24.2R1-S2.54 vCPU, 5,120 MB
H1EVE-NG GUI server (Docker)eve-gui-server:latest1 vCPU, 1,024 MB
H2EVE-NG GUI server (Docker)eve-gui-server:latest1 vCPU, 1,024 MB
H3EVE-NG GUI server (Docker)eve-gui-server:latest1 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 JNCIP-ENT JN0-650 guided labs.

  3. Open 10 - SSM scoping and multicast 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 JNCIP-ENT labs

All JNCIP-ENT labs

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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.