Using DHCPv6 for Prefix Delegation in Cellular Networks
draft-sarikaya-int-area-prefix-delegation-00

Abstract

According to IPv6 operation in cellular networks, one prefix can only be assigned to one interface of a mobile node by an access router and different mobile nodes can't share a prefix. Managing Per-MN interface prefixes is likely to increase the processing load at the access router. Based on the idea that DHCPv6 servers can manage prefixes as well as addresses, we propose a new technique in which the access router offloads delegation and release tasks of the prefixes to an DHCPv6 server. The access router first requests a prefix for an incoming mobile node to the DHCPv6 server. The access router next advertises the prefix information to the mobile node with a Router Advertisement message. When the mobile node hands off, the prefix is returned to the DHCPv6 server. We also describe how AAA servers can help in prefix delegation. Status of this Memo This Internet-Draft is submitted to IETF in full conformance with the provisions of BCP 78 and BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet- Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." The list of current Internet-Drafts can be accessed at http://www.ietf.org/ietf/1id-abstracts.txt. The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html. This Internet-Draft will expire on June 19, 2010.Copyright Notice Copyright (c) 2009 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the BSD License.

Authors

Behcet Sarikaya
Frank Xia

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