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Forum Replies

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

  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 239.1.1.1.

    Is it because any specific reason?

    PIM debugging is on
    *Jul 28 05:39:47.672: PIM(0): Building Graft message for 239.1.1.1, Eth                                                               ernet0/0: no entries
    *Jul 28 05:39:47.672: PIM(0): Building Graft message for 239.1.1.1, 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.

    Rene

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