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CCNP Service Provider lab 18 of 23

Multicast: PIM-SM, SSM, BIDIR, IGMP and MLD

Build an IPTV-style multicast core. Run PIM sparse mode with an RP, move to SSM with IGMPv3, try BIDIR and PIMv6 with MLD, and see the same control plane on IOS XR.

Run this lab

It needs Lite: its 6 nodes are set to 6 vCPU and 5,120 MB in total. That fits the free demo too.

In your workspace: Shared, then CCNP Service Provider guided labs, then 18 - Multicast - PIM-SM SSM BIDIR IGMP and MLD

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Level
Advanced
Time
About 90 minutes
Nodes need
6 vCPU, 5,120 MB
Smallest plan
Lite

The scenario

Fellgate Carrier's IPTV service sends channels from a headend to thousands of homes. A copy per home would flood the core, so the network has to replicate each stream only where it's needed. That's IP multicast.

SRC is the headend (10.1.1.10) and RCV is a set-top box (10.3.3.10). R1, R2 and R3 run OSPF for IPv4 and IPv6, and R2 will be the rendezvous point. X1 is an IOS XR router hanging off R2.

What this image can't do. XRv forms PIM neighbours, joins groups and builds multicast state, but it doesn't forward multicast packets: traffic fails its RPF check in the MFIB. So the data path in this lab is on IOSv, and X1 is here to show the XR commands and control plane.

DeviceInterfaceAddressConnects to
SRCGi0/010.1.1.10/24, 2001:db8:1:1::10/64R1 Gi0/0
R1Loopback010.255.0.1/32, 2001:db8:255::1/128
R1Gi0/010.1.1.1/24, 2001:db8:1:1::1/64SRC Gi0/0
R1Gi0/110.0.12.1/30, 2001:db8:0:12::1/64R2 Gi0/0
R2Loopback010.255.0.2/32, 2001:db8:255::2/128
R2Loopback110.255.1.2/32
R2Gi0/010.0.12.2/30, 2001:db8:0:12::2/64R1 Gi0/1
R2Gi0/110.0.23.1/30, 2001:db8:0:23::1/64R3 Gi0/0
R2Gi0/210.0.29.1/30, 2001:db8:0:29::1/64X1 Gi0/0/0/0
R3Loopback010.255.0.3/32, 2001:db8:255::3/128
R3Gi0/010.0.23.2/30, 2001:db8:0:23::2/64R2 Gi0/1
R3Gi0/110.3.3.1/24, 2001:db8:3:3::1/64RCV Gi0/0
RCVGi0/010.3.3.10/24, 2001:db8:3:3::10/64R3 Gi0/1
X1Loopback010.255.0.9/32
X1Gi0/0/0/010.0.29.2/30R2 Gi0/2
X1Gi0/0/0/110.9.9.1/24

What you’ll practise

  • Build shared and shortest-path trees with PIM sparse mode
  • Compare IGMP versions
  • Use source-specific multicast
  • Configure bidirectional PIM
  • Enable PIMv6 and MLD
  • Read PIM and IGMP state on IOS XR

The tasks

  1. PIM sparse mode
  2. IGMP versions
  3. Source-specific multicast
  4. Bidirectional PIM
  5. IPv6: PIM and MLD
  6. The same on IOS XR
  7. Multicast VPN, in concept

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 Multicast - PIM-SM SSM BIDIR IGMP and MLD6 nodes, 5 links. Every link is listed as text below the diagram.SRCR1R2R3RCVX1Gi0/0Gi0/0Gi0/1Gi0/0Gi0/2Gi0/0/0/0Gi0/1Gi0/0Gi0/1Gi0/0
6 nodes, with the interface names each link uses. On a narrow screen, scroll the diagram sideways.
Every link, as text
  • SRC Gi0/0 to R1 Gi0/0
  • R1 Gi0/1 to R2 Gi0/0
  • R2 Gi0/1 to R3 Gi0/0
  • R3 Gi0/1 to RCV Gi0/0
  • R2 Gi0/2 to X1 Gi0/0/0/0
Nodes in Multicast: PIM-SM, SSM, BIDIR, IGMP and MLD, with the image each runs and the vCPU and RAM it’s set to
NodeDeviceImage in Add NodeSet to
SRCCisco IOSvvios-adventerprisek9-m.spa.159-3.m91 vCPU, 512 MB
R1Cisco IOSvvios-adventerprisek9-m.spa.159-3.m91 vCPU, 512 MB
R2Cisco IOSvvios-adventerprisek9-m.spa.159-3.m91 vCPU, 512 MB
R3Cisco IOSvvios-adventerprisek9-m.spa.159-3.m91 vCPU, 512 MB
RCVCisco IOSvvios-adventerprisek9-m.spa.159-3.m91 vCPU, 512 MB
X1Cisco IOS XRvxrv-k9-demo-6.3.11 vCPU, 2,560 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 CCNP Service Provider guided labs.

  3. Open 18 - Multicast - PIM-SM SSM BIDIR IGMP and MLD 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. The lab follows exam topics and isn’t vendor training material; vendor names identify the exams and the images in the workspace.