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MVPN extranet
refers to the ability for multicast sources
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in one VPN to
send multicast traffic to multicast receivers
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in other VPN(s).
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Specifically
(see Section 5.1.6 of RFC4834): “it MUST be
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possible to
configure a VRF so that:
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receivers
behind attached CEs can receive multicast traffic
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sourced in the
configured set of extranet VPNs
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sources
behind attached CEs can reach multicast traffic
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receivers located
in the configured set of extranet VPNs”
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Such multicast
sources are referred to as extranet
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sources
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The multicast
groups for which the extranet sources
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generate traffic
are referred to as extranet groups
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The receivers
that receive traffic from extranet sources
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are referred to
as extranet receivers
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