Layer-3 VPN Import/Export Verification

Document Type Expired Internet-Draft (l3vpn WG)
Author Michael Behringer 
Last updated 2005-03-25 (latest revision 2005-03-24)
Stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Expired & archived
pdf htmlized (tools) htmlized bibtex
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state Expired
Consensus Boilerplate Unknown
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Responsible AD (None)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Configuration errors on Provider Edge (PE) routers in Layer-3 VPN networks based on [RFC2547] can lead to security breaches of the connected VPNs. For example, the PE router could be mistakenly configured such that a connected Customer Edge (CE) router belongs to an incorrect VPN. Here we propose a scheme that verifies local and remote routing information received by the PE router before it installs new VPN routes into the Virtual Routing & Forwarding Instance (VRF). The proposed changes affect only the PE routers.


Michael Behringer (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)