A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Network-based Inter-domain handover Support for Proxy Mobile IPv6
Author(s) : Zhengming Ma
Ke Wang
Fei Zhang
Filename : draft-ma-netext-pmip-handover-02.txt
Pages : 28
Date : 2012-01-04
[RFC5213] prompts the Inner-domain handover of the MN in Proxy Mobile
IPv6(PMIPv6).This document describes network-based Inter-domain
handover functionality and corresponding mobility options for
PMIPv6.This document strictly abides by the three principle describes
in PMIPv6:
(a)The movement of MN is transparent to CN.
(b)MN doesn't participate in any mobility-related signaling.LMA and
MAG are responsible for managing IP mobility on behalf of the host.
(c)This document is compatible with RFC5213.
The points of this document are as follows:
(1) Concepts: The MN's Home Agent(HA) ,Home Address (HoA) and Care-of
address(CoA) is not only for user but also for the specific
session.MN initiating a session uses the address assigned by the LMA
which the MN is registered at the moment as the HoA for the
session.The user initiating a session uses the address assigned by
the LMA which the MN moves to as the CoA for the session.
(2) Binding Cache:Every local mobility anchor must maintain two
Binding Cache entries for each currently registered mobile node. One
is Inner-domain BCE,the other is Inter-domain BCE. Inner-domain BCE
maintains the binding between MN's Proxy-CoA and MN's HoA. Inter-
domain BCE maintains the bingding between CN's HoA and CN's CoA.
(3)Communication:For the user initiating a session or accepting a
session,no matter how it moves,the HoA for the session is
unchanged,the source address of the data packets is the user's own
HoA,and the destination address of the the data packets is the HoA of
CN.The local mobility anchor will check all the packets received from
the mobile access gateway.If both the source address of the data
packets is the MN's HoA recorded in Inner-domain BCE,and the CN's HoA
and CoA recorded in Inter-domain BCE are the same,the LMA will route
the packets directly to CN as described in RFC5213.Otherwise,
according to looking up the Inter-domain BCE,LMA gets the CoA of CN.
Then ,LMA encapsulates the packets to route to CN.On receiving a
packet from a correspondent node with the destination address
matching a mobile node's home network prefix(es), the CN's LMA MUST
first check the source address and the destination address of the
data packets,if the source address of the data packets is MN's HoA
recorded in Inter-domain BCE and the destination address is CN's HoA
recorded in Inner-domain BCE ,the CN'LMA will forward the packets to
the right MAG directly as described in RFC5213.Otherwise, CN'LMA will
remove the outer header before forwarding the packet. Then,LMA looks
up the Inner-domain BCE to forward the packets to the right MAG.
(4)Updates:When MN moves to visited LMA(MN-vLMA),MN-vLMA will do
three things.
Firstly MN-vLMA will assign a MN-CoA for MN and build up the Inner-
domain BCE for MN. Secondly,MN-vLMA will sends message to MN-hLMA to
get the HoA of CN .Then,MN-vLMA builds up the binding between CN-HoA
and CN-HoA in the Inter-domain BCE.Thirdly, MN-vLMA sends message to
CN-LMA wiht the MN-CoA and MN-HoA included in the message to help CN-
LMA updating the Inter-domain BCE for MN.
Compared with "draft-ma-netext-pmip-handover-00.txt", this document
is compatible with RFC5213 and the LMA described in this document
should decide if it is necessary to encapsulate the packets.In other
word,if MN and CN are both in their home domain,they will communicate
just as the way described in RFC5213 and otherwise they will
communicate in the way described in this document.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ma-netext-pmip-handover-02.txt
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
This Internet-Draft can be retrieved at:
ftp://ftp.ietf.org/internet-drafts/draft-ma-netext-pmip-handover-02.txt
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