You are deploying a next-generation multicast VPN in your network and must identify which
routers require tunnel services?
A.
DRs closest to the receiver require tunnel services.
B.
DRs closest to the source require tunnel services.
C.
All MVPN PE routers require tunnel services.
D.
All MVPN P routers require tunnel services.
Explanation:
http://www.juniper.net/techpubs/en_US/junos14.1/topics/usage-guidelines/vpns-configuring-multicast-layer-3-vpns.html
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PEs are not obliged to have Tunnel Service, you can use vrf-table-label instead. But DR closest to source should – because it encapsulate PIM Register messages
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C is correct
http://www.juniper.net/documentation/en_US/junos14.1/topics/usage-guidelines/vpns-configuring-multicast-layer-3-vpns.html
Each PE router configured to run multicast over Layer 3 VPNs must have a Tunnel Services PIC. A Tunnel Services PIC is also required on the P routers that act as rendezvous points (RPs). Tunnel Services PICs are also needed on all the CE routers acting as designated routers (first-hop/last-hop routers) or as RPs, just as they are in non-VPN PIM environments
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above link is for Draft Rosen multicast VPNs not for Next generation multicast VPNs.in case of
Next generation multicast VPNs multicast can work even without tunnel PIC and with vrf-table-label only.
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