I think this problem is already solved in RFC 5549.
RFC 5549 specifies the procedures for creating a route with IPv4 or
VPN-IPv4 NLRI and an IPv6 next hop, which should provide both 4PE and
4vPE functionality.
Your proposal seems to differ, in that it puts the v6 next hop address
in the NLRI, rather than in the next hop field. I don't think it makes
much sense to put the next hop address in the NLRI, as that would then
require a special set of rules for bestpath selection.
On 3/8/2016 10:37 PM, [email protected] wrote:
Hello all,
I update my draft. 4PE is introduced in this doc to meet the gap
pointed out in RFC7439. 4PE routers in IPv6-only MPLS network can use
MP-BGP extended in this doc to connect IPv4-only islands.. Your
comments are very appreciated.
------------------------------------------------------------------------
[email protected]
*From:* internet-drafts <mailto:[email protected]>
*Date:* 2016-03-09 09:54
*To:* Zhenqiang Li <mailto:[email protected]>
*Subject:* New Version Notification for draft-li-bess-4pe-01.txt
A new version of I-D, draft-li-bess-4pe-01.txt
has been successfully submitted by Zhenqiang Li and posted to the
IETF repository.
Name: draft-li-bess-4pe
Revision: 01
Title: Connecting IPv4 Islands over IPv6 MPLS Using IPv4 Provider
Edge Routers (4PE)
Document date: 2016-03-08
Group: Individual Submission
Pages: 9
URL: https://www.ietf.org/internet-drafts/draft-li-bess-4pe-01.txt
Status: https://datatracker.ietf.org/doc/draft-li-bess-4pe/
Htmlized: https://tools.ietf.org/html/draft-li-bess-4pe-01
Diff: https://www.ietf.org/rfcdiff?url2=draft-li-bess-4pe-01
Abstract:
This document explains how to interconnect IPv4 islands over a
Multiprotocol Label Switching (MPLS)-enabled IPv6-only core. This
approach relies on IPv4 Provider Edge routers (4PE), which are Dual
Stacks in order to connect to IPv4 islands and to the MPLS
core. The
4PE routers exchange the IPv4 reachability information
transparently
over the core using the Multiprotocol Border Gateway Protocol (MP-
BGP). MP-BGP is extended to do this. A new Subsequence Address
Family Identifier (SAFI) with corresponding new format Network
Layer
Reachability Information (NLRI), is introduced. The BGP Next Hop
field is used to convey the IPv4 address of the 4PE router, a field
is added in Network Layer Reachability Information (NLRI) to convey
the IPv6 address of the 4PE router, so that dynamically established
IPv6-signaled MPLS Label Switched Paths (LSPs) can be used without
explicit tunnel configuration.
Please note that it may take a couple of minutes from the time of
submission
until the htmlized version and diff are available at tools.ietf.org.
The IETF Secretariat
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