Name: draft-ooms-v6ops-bgp-tunnel-04
Title: Connecting IPv6 Islands over IPv4 MPLS using IPv6 Provider Edge Routers (6PE)
State: Active
Authors: Jeremy De Clercq
Group: Individual Submissions (none)
Date: 2004-10-28
This document explains how to interconnect IPv6 islands over a
Multi-Protocol Label Switching (MPLS)-enabled IPv4 cloud. This approach
relies on IPv6 Provider Edge routers (6PE) which are Dual Stack in order to
connect to IPv6 islands and to the MPLS core which is only required to run
IPv4 MPLS. The 6PE routers exchange the IPv6 reachability information
transparently over the core using the Multi-Protocol Border Gateway
Protocol (MP-BGP) over IPv4. In doing so, the BGP Next Hop field is used to
convey the IPv4 address of the 6PE router so that dynamically established
IPv4-signaled MPLS Label Switched Paths (LSPs) can be used without explicit
tunnel configuration.
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