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This draft is a work item of the Layer 3 Virtual Private Networks Working Group of the IETF.
Title : Using BGP as an Auto-Discovery Mechanism for VR-based Layer-3 VPNs
Author(s) : H. Ould-Brahim, et al.
Filename : draft-ietf-l3vpn-bgpvpn-auto-09.txt
Pages : 12
Date : 2007-4-25
In any provider-based VPN scheme, the Provider Edge (PE) devices
attached to a common VPN must exchange certain information as a
prerequisite to establish VPN-specific connectivity. The main
purpose of an auto-discovery mechanism is to enable a PE to
dynamically discover the set of remote PEs having VPN members in
common. The auto-discovery mechanism proceeds by having a PE
advertises to other PEs, at a minimum, its own IP address and the
list of VPN members configured on that PE. Once that information is
received the remote PEs will then identify the list of VPN sites
members of the same VPN, and use the information
carried within the discovery mechanism to establish VPN
connectivity. This draft defines a BGP based auto-discovery
mechanism for Virtual Router-based layer-3 VPNs. This mechanism is
based on the approach used by BGP/MPLS-IP-VPN for distributing VPN
routing information within the service provider(s).
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