Discovering VPN Information using BGP
Provider Edge Router (PE1)
Backbone
BGP
BGP
BGP
BGP UPDATE
BGP
UPDATE
VPN membership, etc
(No vpn routes, and
no private customer
routing information)
Provider Edge Router (PE2)
BVR
BVR
The virtual router architecture doesn’t require piggybacking VPN reachability information onto the backbone routing instance.
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