draft-ietf-mip4-nemo-v4-base-03.txt   draft-ietf-mip4-nemo-v4-base-04.txt 
Network Working Group K. Leung Network Working Group K. Leung
Internet-Draft G. Dommety Internet-Draft G. Dommety
Expires: April 9, 2008 Cisco Systems Expires: April 10, 2008 Cisco Systems
V. Narayanan V. Narayanan
Qualcomm, Inc. Qualcomm, Inc.
A. Petrescu A. Petrescu
Motorola Motorola
October 4, 2007 October 5, 2007
Network Mobility (NEMO) Extensions for Mobile IPv4 Network Mobility (NEMO) Extensions for Mobile IPv4
draft-ietf-mip4-nemo-v4-base-03.txt draft-ietf-mip4-nemo-v4-base-04.txt
Status of this Memo Status of this Memo
By submitting this Internet-Draft, each author represents that any By submitting this Internet-Draft, each author represents that any
applicable patent or other IPR claims of which he or she is aware applicable patent or other IPR claims of which he or she is aware
have been or will be disclosed, and any of which he or she becomes have been or will be disclosed, and any of which he or she becomes
aware will be disclosed, in accordance with Section 6 of BCP 79. aware will be disclosed, in accordance with Section 6 of BCP 79.
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF), its areas, and its working groups. Note that Task Force (IETF), its areas, and its working groups. Note that
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and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
The list of current Internet-Drafts can be accessed at The list of current Internet-Drafts can be accessed at
http://www.ietf.org/ietf/1id-abstracts.txt. http://www.ietf.org/ietf/1id-abstracts.txt.
The list of Internet-Draft Shadow Directories can be accessed at The list of Internet-Draft Shadow Directories can be accessed at
http://www.ietf.org/shadow.html. http://www.ietf.org/shadow.html.
This Internet-Draft will expire on April 9, 2008. This Internet-Draft will expire on April 10, 2008.
Copyright Notice Copyright Notice
Copyright (C) The Internet Society (2007). Copyright (C) The Internet Society (2007).
Abstract Abstract
This document describes a protocol for supporting Mobile Networks This document describes a protocol for supporting Mobile Networks
between a Mobile Router and a Home Agent by extending the Mobile IPv4 between a Mobile Router and a Home Agent by extending the Mobile IPv4
protocol. A Mobile Router is responsible for the mobility of one or protocol. A Mobile Router is responsible for the mobility of one or
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The Mobile Networks (either implicitly configured on the Home Agent The Mobile Networks (either implicitly configured on the Home Agent
or explicitly identified by the Mobile Router) are advertised by or explicitly identified by the Mobile Router) are advertised by
the Home Agent for route propagation. Traffic to and from nodes in the Home Agent for route propagation. Traffic to and from nodes in
the Mobile Network are tunneled by the Home Agent to the Mobile the Mobile Network are tunneled by the Home Agent to the Mobile
Router, and vice versa. Though packets from the Mobile Network can Router, and vice versa. Though packets from the Mobile Network can
be forwarded directly without tunneling (if reverse tunneling is be forwarded directly without tunneling (if reverse tunneling is
not used) packets will be dropped if ingress filtering is turned not used) packets will be dropped if ingress filtering is turned
on. on.
This document specifies an additional tunnel between Mobile Router's This document specifies an additional tunnel between Mobile
Home Address and the Home Agent. This tunnel is encapsulated within Router's Home Address and the Home Agent. This tunnel is
the normal tunnel between the Care-of Address (CoA) and Home Agent. encapsulated within the normal tunnel between the Care-of Address
In Foreign Agent CoA mode, the tunnel between the Mobile Router and (CoA) and Home Agent. In Foreign Agent CoA mode, the tunnel
Home Agent is needed to allow the Foreign Agent to direct the between the Mobile Router and Home Agent is needed to allow the
decapsulated packet to the proper visiting Mobile Router. However, Foreign Agent to direct the decapsulated packet to the proper
in Collocated CoA mode, the additional tunnel is not essential and visiting Mobile Router. However, in Collocated CoA mode, the
can be eliminated because the Mobile Router is the recipient of the additional tunnel is not essential and could be eliminated because
encapsulated packets for the Mobile Network. the Mobile Router is the recipient of the encapsulated packets for
the Mobile Network; a proposal for this feature is in [1].
All traffic between the nodes in the Mobile Network and Correspondent All traffic between the nodes in the Mobile Network and Correspondent
Nodes passes through the Home Agent. This document does not cover Nodes passes through the Home Agent. This document does not cover
route optimization of this traffic. route optimization of this traffic.
A similar protocol has been documented in [RFC3963] for supporting A similar protocol has been documented in [RFC3963] for supporting
IPv6 mobile networks with Mobile IPv6 extensions. IPv6 mobile networks with Mobile IPv6 extensions.
Multihoming for Mobile Routers is outside the scope of this Multihoming for Mobile Routers is outside the scope of this
document. document.
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[2] Perkins, C., Ed., "IP Mobility Support for IPv4, [2] Perkins, C., Ed., "IP Mobility Support for IPv4,
revised", draft-ietf-mip4-rfc3344bis-05.txt, IETF revised", draft-ietf-mip4-rfc3344bis-05.txt, IETF
Internet-Draft, Work in Progress, July 9, 2007. Internet-Draft, Work in Progress, July 9, 2007.
14. Changelog 14. Changelog
The changes are listed in reverse chronological order, most recent The changes are listed in reverse chronological order, most recent
changes appearing at the top of the list: changes appearing at the top of the list:
From draft-ietf-mip4-nemo-v4-base-03.txt to
draft-ietf-mip4-nemo-v4-base-04.txt
-more changes in Introduction to say that with FA mode only the
non-optimized double-encapsulation operation is supported and
[1] proposes optimization.
From draft-ietf-mip4-nemo-v4-base-02.txt to From draft-ietf-mip4-nemo-v4-base-02.txt to
draft-ietf-mip4-nemo-v4-base-03.txt draft-ietf-mip4-nemo-v4-base-03.txt
-changed a sentence in the introduction to say that FA mode _is_ -changed a sentence in the introduction to say that FA mode _is_
supported but unoptimized, and that a reference [1] optimizes supported but unoptimized, and that a reference [1] optimizes
that mode. that mode.
-added reference [2] to the rfc3344bis draft. -added reference [2] to the rfc3344bis draft.
From draft-ietf-mip4-nemo-v4-base-01.txt to From draft-ietf-mip4-nemo-v4-base-01.txt to
draft-ietf-mip4-nemo-v4-base-02.txt draft-ietf-mip4-nemo-v4-base-02.txt
-changed title from "IPv4 Network Mobility (NEMO) Protocol" to -changed title from "IPv4 Network Mobility (NEMO) Protocol" to
 End of changes. 6 change blocks. 
13 lines changed or deleted 20 lines changed or added

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