[c-nsp] MPLS TE and PIM

[Ibrahim Abo Zaid]

sorry if my question wasn't clear enough

i tried it with 2 tunnels between two PEs and enabled sparse-mode under
tunnels

so in this case , should traffic flows over the tunnel ?


thanks
swap


On Wed, Jan 13, 2010 at 7:21 PM, swap m <ccie19804 at gmail.com> wrote:

>  ask yourself this way -
> 1. are TE tunnels bi-directional? answer is no
> 2. can a TE tunnel receive traffic? again the answer is no.
>
> A TE tunnel is for sending traffic, not for receiving. PIM neighborship
> hence is established on physical interface, not on the TE interface coz you
> need bidirectional flow between the neighbors.
> RPF failures may happen when you receive multicast traffic via physical
> interface while the routing table has a route via TE interface. Either "mpls
> traffic-eng multicast-intact" or static mroutes can be used to solve these
> RPF issues. Forwarding adj doesnt work with multicast-intact feature.
>
> HTH
>
> Swap
> #19804
>
>   On Tue, Jan 12, 2010 at 11:38 PM, Ibrahim Abo Zaid <
> ibrahim.abozaid at gmail.com> wrote:
>
>>  Hi
>>
>> I have a question about PIM , is PIM messages can flow across MPLS TE
>> Tunnel
>> ? why PIM neighborship can't be established over the tunnel ?
>>
>>
>> thanks
>> --Ibrahim
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