i have an MPLS backbone which is running sparse-mode. and i am trying to support Multicast for VRF's.. whats happening at the moment is when i configure MDT. The tunnels come up properlly. end to end ping works fine . but for only 1 icmp echo request. i get th response for first packet. after that packets aregetting dropped and i am getting no response.
any ideas ?
can i use SSM mode in conjunction with sparse-mode ?
amit i can think of a thousand reasons why this could happen. Can you post actual configs of the PE multicast and the CE multicast. Please include pim neighbours and ip mroute if possible. Also a show on the mdt (i cant remember the command as its been too long). First thing that springs to mind is the default mdt is working then it kicks in to the data mdt and this is when you get the issue. RPF check - are your loopbacks being advertised properly?
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