You are deploying a next-generation multicast VPN in your network and must identify which
routers require tunnel services?
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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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