We're Sorry, Full Content Access is for Members Only...

If you like to keep on reading, Become a Member Now! Here is why:

  • Learn any CCNA, CCNP and CCIE R&S Topic. Explained As Simple As Possible.
  • Try for Just $1. The Best Dollar You've Ever Spent on Your Cisco Career!
  • Full Access to our 651 Lessons. More Lessons Added Every Week!
  • Content created by Rene Molenaar (CCIE #41726)

451 Sign Ups in the last 30 days

100% Satisfaction Guaranteed!
You may cancel your monthly membership at any time.
No Questions Asked!

Tags: ,

Forum Replies

  1. Hi,
    What ios you are using for H1 ,H2 and routers ?

  2. Just to let you know, if your image is a layer 3 device, then for the config to work as Rene has put it, with default-gateway, you need to “no ip routing”.
    Otherwise, just do a default route.

    Usually the method used in the lab is for Layer 2 devices.

  3. “We’ll discuss sparse-dense mode in another lesson”

    Did you create a lesson yet for this?

  4. Hi Rene, Thanks for briefing us on dense mode, graft message, etc.

    I dont see graft v2 msg while doing the same lab while connect H3 to igmp group

    Is it because any specific reason?

    PIM debugging is on
    *Jul 28 05:39:47.672: PIM(0): Building Graft message for, Eth                                                               ernet0/0: no entries
    *Jul 28 05:39:47.672: PIM(0): Building Graft message for, Eth                                                               ernet0/3: no entries
    *Jul 28 05:39:47.672: PIM(0): Building Graf
    ... Continue reading in our forum

  5. Hi Vinod,

    In your output I see it is building the graft message but it doesn’t show anything about sending/receiving it.

    Couple of things to check:

    • R1 and R3 are PIM neighbors?
    • Is the interface between R1-R3 currently pruned?
    • Does R1 show anything in its debugs?
    • Try a packet capture between R1-R3 to check if you see any graft messages.


8 more replies! Ask a question or join the discussion by visiting our Community Forum