[c-nsp] Multicast support in single vrf

[Luc De Ghein]

On 9/03/2011 9:26, Phil Mayers wrote:
> On 03/08/2011 10:54 PM, John Elliot wrote:
>>
>> We have a client wanting us to support multicast across our
>> network(They have multiple tails in single vrf, connected to our
>> P/PE's(All 7200's)
>>
>> (Customer is running there own RP)
>>
>> As we are only provding multicast support to a single customer, On
>> our P/PE routers is it still necessary to enable multicast routing
>> globally, MP-BGP Loop Interfaces and tag-switching/mpls interfaces?
>
> Yes. MVPN encapsulates customer multicast in GRE-over-provider 
> multicast, so you'll need PIM for that to flow.
>

Or, use mLDP in the core.


Luc

>> (I'm guessing it would be as the client has tails terminating on
>> multiple P/PE's?)
>>
>> Client is running sparse-mode on all there CE Ints - So assume we
>> will need to?(Or are there any benefits in us running sparse-dense
>> mode)?
>
> I would generally recommend sparse-mode. But you can run e.g. PIM-SSM 
> in the provider core. All that matters is that the PEs can send 
> multicast to each other.
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