A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Layer 3 Virtual Private Networks Working Group of the IETF.
Title : Use of PE-PE IPsec in RFC2547 VPNs
Author(s) : E. Rosen, J. De Clercq, C. Sargor
Filename : draft-ietf-l3vpn-ipsec-2547-02.txt
Pages : 17
Date : 2004-3-9
In BGP/MPLS IP Virtual Private Networks (VPNs), VPN data packets
traveling from one Provider Edge (PE) router to another generally
carry two MPLS labels, an inner label that corresponds to a VPN-
specific route, and an outer label that corresponds to a Label
Switched Path (LSP) between the PE routers. In some circumstances,
it is desirable to support the same type of VPN architecture, but
using an IPsec Security Association in place of that LSP. The outer
MPLS label would thus be replaced by an IP/IPsec header. This
enables the VPN packets to be carried securely over non-MPLS
networks, using standard IPsec authentication and/or encryption
functions to protect them. This draft specifies the procedures which
are specific to support of BGP/MPLS IP VPNs using the IPsec
encapsulation.
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