Multicast Auto-RP Listener


Gotham City once again needs your help, one of your colleagues decided to change the configuration on all routers to “sparse-mode” instead of “sparse-dense-mode”. Some villain hacked your routers last week and you didn’t notice, the command “sparse-dense-mode” is not available anymore…you will need to fix the network or the citizens won’t be able to watch the latest videos of action replays.


  • All IP addresses have been preconfigured for you.
  • Configure OSPF on all routers, advertise all networks. Achieve full connectivity.
  • Configure sparse-mode multicast on all routers.
  • Configure AutoRP so router Joker is the Rendezvous Point (RP), use the loopback0 interface.
  • Configure AutoRP so router Joker is also the mapping agent (MP), use the loopback0 interface.
  • Configure router Batman to join the multicast group on it’s Fastethernet interface.
  • Make sure you can ping the group address from router Catwoman.
  • You are not allowed to manually configure the RP address on any router.




Multicast AUTO-RP Listener network topology

Video Solution:

Configuration Files

You need to register to download the GNS3 topology file. (Registration is free!)

Once you are logged in you will find the configuration files right here.

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Written by René Molenaar - CCIE #41726

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About the Author: Rene Molenaar

René - CCIE #41726 is the creator of where he shares CCNA, CCNP and CCIE R&S labs. He also blogs about networking on


  1. hi rene

    the GNS3 topology uploaded for this lab doesn’t seem to be the right one. This lab has 5 routers but GNS3 topology has only 4 routers. Can you please check.


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