Separation of Control and User Plane for Proxy Mobile IPv6 (RFC7389)
Original Publication Date: 2014-Oct-01
Included in the Prior Art Database: 2014-Oct-31
Internet Society Requests For Comment (RFCs)
R. Wakikawa: AUTHOR [+4]
A Proxy Mobile IPv6 (PMIPv6) infrastructure comprises two primary entities: LMA (local mobility anchor) and MAG (mobile access gateway). The interface between the MAG and LMA consists of the control plane and user plane. The control plane is responsible for signaling messages between the MAG and LMA, such as the Proxy Binding Update (PBU) and Proxy Binding Acknowledgement (PBA) messages to establish a mobility binding. In addition, the control-plane components in the MAG and LMA are also responsible for setting up and tearing down a bidirectional tunnel between the MAG and LMA. The user plane is used for carrying the mobile node's IP traffic between the MAG and the LMA over the bidirectional tunnel.
Internet Engineering Task Force (IETF) R. Wakikawa Request for Comments: 7389 Softbank Mobile Category: Standards Track R. Pazhyannur ISSN: 2070-1721 S. Gundavelli Cisco C. Perkins Futurewei Inc. October 2014
Separation of Control and User Plane for Proxy Mobile IPv6
This document specifies a method to split the control plane (CP) and user plane (UP) for a network infrastructure based on Proxy Mobile IPv6 (PMIPv6). Existing specifications allow a mobile access gateway (MAG) to separate its control and user plane using the Alternate Care-of Address mobility option for IPv6 or Alternate IPv4 Care-of Address option for IPv4. However, the current specification does not provide any mechanism allowing the local mobility anchor (LMA) to perform an analogous functional split. To remedy that shortcoming, this document specifies a mobility option enabling an LMA to provide an alternate LMA address to be used for the bidirectional user-plane traffic between the MAG and LMA. With this new option, an LMA will be able to use an IP address for its user plane that is different than the IP address used for the control plane.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc7389.
Wakikawa, et al. Standards Track [Page 1]
RFC 7389 PMIPv6 CP-UP Split October 2014
Copyright (c) 2014 IETF Trust and the persons identified as the document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Tr...