MPLS

[TekashiSixNine]

Hello

[Georg Pauwen]

Hello,

not sure what you mean with "my address families are not configured multicast". All C, CE, P, and PE routers need to have 'ip multicast-routing' enabled globally, and all participating interfaces 'ip pim sparse-dense-mode'. You can configure static IGMP join-groups.

[paul driver]

Hello
I assume you are wanting to use MSDP?
When you want to advertise prefixes as multicast you need to enable MBGP as such MC address family IS required, and enabling multicast AF without specifying any peering will not be a problem to your existing network

[Giuseppe Larosa]

Hello @TekashiSixNine ,

>> I have a fully functional MPLS backbone. Each CE router can communicate with the other. I want to configure IGMP and PIM protocols for multicast but my address families are not configured multicast. Is that a problem? 

Yes it is.

To support multicast on L3_VPN you have the following options:

draft Rosen :

it uses point to multipoint GRE in the forwaring plane . PIM messages are exchanged between CE and PE routers

address-family mdt needs to be enabled in MP BGP for each VRF.

NG VPN : it uses multipoint to multipoint LDP in Cisco implentation

it uses RSVP TE p2mp in Juniper implementation

But support is limited to to ASR 1000  XE or ASR 9000 IOS XR.

Finally if you have a VPLS  i.e. a L2 VPN service multipoint to multipoint you don't need to bother at all of the signalling but all BUM traffic Broadcast Multicast and Unknown unicast will be flooded over each p2p LSP.

In this last case using an input policer on  L2 VPN PE ingress side is highly recommended.

IGMP snooping might be supported and H-VPLS can help as well

Hope to help

Giuseppe