Network Working Group F. Xia Internet-Draft B. Sarikaya Intended status: Standards Track Huawei USA Expires: October 9, 2009 J. Korhonen Nokia Siemens Networks S. Gundavelli Cisco D. Damic Nokia Siemens Networks April 7, 2009 RADIUS Support for Proxy Mobile IPv6 draft-xia-netlmm-radius-04 Status of this Memo This Internet-Draft is submitted to IETF in full conformance with the provisions of BCP 78 and BCP 79. This document may contain material from IETF Documents or IETF Contributions published or made publicly available before November 10, 2008. The person(s) controlling the copyright in some of this material may not have granted the IETF Trust the right to allow modifications of such material outside the IETF Standards Process. Without obtaining an adequate license from the person(s) controlling the copyright in such materials, this document may not be modified outside the IETF Standards Process, and derivative works of it may not be created outside the IETF Standards Process, except to format it for publication as an RFC or to translate it into languages other than English. 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 October 9, 2009. Xia, et al. Expires October 9, 2009 [Page 1] Internet-Draft RADIUS-PMIPv6 April 2009 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 in effect on the date of publication of this document (http://trustee.ietf.org/license-info). Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Xia, et al. Expires October 9, 2009 [Page 2] Internet-Draft RADIUS-PMIPv6 April 2009 Abstract This document defines new attributes to facilitate Proxy Mobile IPv6 operations using RADIUS infrastructure. The RADIUS interactions take place when the Mobile Node attaches, authenticates and authorizes to a Proxy Mobile IPv6 domain. Furthermore, this document also defines a RADIUS based interface between the Local Mobility Anchor and the RADIUS server for authorizing received initial Proxy Binding Update messages for the mobility service session. In addition to the mobility session setup related RADIUS interaction, this document defines the baseline for both the Mobile Access Gateway and the Local Mobility Anchor generated accounting. Xia, et al. Expires October 9, 2009 [Page 3] Internet-Draft RADIUS-PMIPv6 April 2009 Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 5 2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 5 3. Solution Overview . . . . . . . . . . . . . . . . . . . . . . 6 4. Attribute definitions . . . . . . . . . . . . . . . . . . . . 9 4.1. MIP6-Feature-Vector . . . . . . . . . . . . . . . . . . . 9 4.2. Mobile-Node-Identifier . . . . . . . . . . . . . . . . . . 11 4.3. PMIP6-Home-LMA-IPv6-Address . . . . . . . . . . . . . . . 11 4.4. PMIP6-Visited-LMA-IPv6-Address . . . . . . . . . . . . . . 12 4.5. PMIP6-Home-LMA-IPv4-Address . . . . . . . . . . . . . . . 13 4.6. PMIP6-Visited-LMA-IPv4-Address . . . . . . . . . . . . . . 14 4.7. PMIP6-Home-LMA-FQDN . . . . . . . . . . . . . . . . . . . 15 4.8. PMIP6-Visited-LMA-FQDN . . . . . . . . . . . . . . . . . . 16 4.9. PMIP6-Home-HL-Prefix . . . . . . . . . . . . . . . . . . . 17 4.10. PMIP6-Visited-HL-Prefix . . . . . . . . . . . . . . . . . 18 4.11. PMIP6-Home-Interface-ID . . . . . . . . . . . . . . . . . 19 4.12. PMIP6-Visited-Interface-ID . . . . . . . . . . . . . . . . 19 4.13. PMIP6-Home-IPv4-HoA . . . . . . . . . . . . . . . . . . . 20 4.14. PMIP6-Visited-IPv4-HoA . . . . . . . . . . . . . . . . . . 21 4.15. PMIP6-Home-DHCP4-Server-Address . . . . . . . . . . . . . 22 4.16. PMIP6-Visited-DHCP4-Server-Address . . . . . . . . . . . . 23 4.17. PMIP6-Home-DHCP6-Server-Address . . . . . . . . . . . . . 24 4.18. PMIP6-Visited-DHCP6-Server-Address . . . . . . . . . . . . 25 4.19. Service-Selection . . . . . . . . . . . . . . . . . . . . 26 4.20. Calling-Station-Id . . . . . . . . . . . . . . . . . . . . 27 5. MAG to RADIUS server interface . . . . . . . . . . . . . . . . 27 5.1. General . . . . . . . . . . . . . . . . . . . . . . . . . 27 5.2. Table of Attributes . . . . . . . . . . . . . . . . . . . 27 6. LMA to RADIUS server interface . . . . . . . . . . . . . . . . 28 6.1. General . . . . . . . . . . . . . . . . . . . . . . . . . 28 6.2. Table of Attributes . . . . . . . . . . . . . . . . . . . 28 7. Accounting . . . . . . . . . . . . . . . . . . . . . . . . . . 29 7.1. Accounting at LMA . . . . . . . . . . . . . . . . . . . . 29 7.2. Accounting at MAG . . . . . . . . . . . . . . . . . . . . 29 7.3. Table of Attributes . . . . . . . . . . . . . . . . . . . 29 8. Security Considerations . . . . . . . . . . . . . . . . . . . 30 9. IANA consideration . . . . . . . . . . . . . . . . . . . . . . 30 9.1. Attribute Type Codes . . . . . . . . . . . . . . . . . . . 30 9.2. Namespaces . . . . . . . . . . . . . . . . . . . . . . . . 30 10. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 31 11. References . . . . . . . . . . . . . . . . . . . . . . . . . . 32 11.1. Normative References . . . . . . . . . . . . . . . . . . . 32 11.2. Informative references . . . . . . . . . . . . . . . . . . 32 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 34 Xia, et al. Expires October 9, 2009 [Page 4] Internet-Draft RADIUS-PMIPv6 April 2009 1. Introduction Proxy Mobile IPv6 (PMIPv6) [RFC5213] is network based mobility management protocol which allows IP mobility session continuity for a Mobile Node (MN) without its involvement in mobility management signaling. A Mobile Access Gateway (MAG) represents the MN and is authorized to send mobility management signaling messages on behalf of the MN. Before the MAG is able to perform the required mobility management signaling, it needs to know at minimum a Local Mobility Anchor (LMA) address and the MN Identifier (MN-ID). This per MN Policy Profile (PP) information is stored in a Policy Store (PS), which may be local to the MAG or remote accessible, for example, through an authentication, authorization and accounting (AAA) infrastructure. This document defines a RADIUS [RFC2865] based profile and corresponding attributes to be used on the AAA interface between the MAG and the RADIUS server. The interface that is used to download the per MN Policy Profile from the remote Policy Store. The RADIUS interactions take place when the MN attaches, authenticates and authorizes to a PMIPv6 Domain. Furthermore, this document also defines a RADIUS based interface between the LMA and the RADIUS server for authorizing received initial Proxy Binding Update (PBU) messages for the mobility service session. In addition to the mobility session setup related RADIUS interaction, this document defines the baseline for both the MAG and the LMA generated accounting. 2. Terminology The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in [RFC2119]. The terminology in this document is based on the definitions found in [RFC5213] and [I-D.ietf-netlmm-pmip6-ipv4-support]. The following additional or clarified terms are also used in this document: Network Access Server (NAS): A device that provides an access service for a user to a network. In the context of this document the NAS may be integrated into or co-located to a MAG. The NAS contains a Diameter client function. Xia, et al. Expires October 9, 2009 [Page 5] Internet-Draft RADIUS-PMIPv6 April 2009 Home AAA (HAAA): An Authentication, Authorization, and Accounting (AAA) server located in MN's home network. A HAAA is essentially a RADIUS server in this document. Visited AAA (VAAA): An Authentication, Authorization, and Accounting (AAA) server located in MN's visited network. A VAAA is essentially a RADIUS server in this document. When the MN moves to the visited network, VAAA acting as a proxy receives an authentication (or accounting) request from an AAA client (such as a NAS), forwards the request to a HAAA server, receives the reply from the HAAA, and sends that reply to the client, possibly with changes to reflect local administrative policy. 3. Solution Overview This document defines RADIUS based AAA interactions between the MAG and the AAA, and between the LMA and the AAA. The policy profile is downloaded from the AAA to the MAG during the MN attachment to the PMIPv6 Domain; the LMA request authorization to the RADIUS server when receiving initial Proxy Binding Update (PBU) messages for the mobility service session. When a MN attaches to a PMIPv6 Domain, a network access authentication procedure is usually started. The choice of the authentication mechanism is specific to the access network deployment, but could be based on the Extensible Authentication Protocol (EAP) [RFC3748]. During the network access authentication procedure, the MAG acting as a Network Access Server (NAS) queries the HAAA through the AAA infrastructure using the RADIUS protocol. If the HAAA detects that the subscriber is also authorized for the PMIPv6 service, PMIPv6 specific information is returned along with the successful network access authentication answer to the MAG. After the MN has been successfully authenticated, the MAG sends a PBU to the LMA based on the MN's policy profile information. Upon receiving the PBU, the LMA interacts with the HAAA through the AAA infrastructure,and fetches the relevant parts of the subscriber policy profile and authorization information related to the mobility service session. In this specification, the AAA has the role of the PMIPv6 policy store. Based on administrative domains which the MAG and LMA belong to, Xia, et al. Expires October 9, 2009 [Page 6] Internet-Draft RADIUS-PMIPv6 April 2009 there are three scenarios: the MAG and LMA are both in the home network, The MAG and LMA are both in the visited network, and The MAG is in the visited network while the LMA is in the home network. Figure 1 shows the participating network entities which are in the home network. The MAG and LMA interact with the HAAA. +--------+ | HAAA & | RADIUS +-----+ | Policy |<-------->| LMA | | Profile| +-----+ +--------+ | <--- LMA-Address ^ | | // \\ +---|------------- //---\\----------------+ ( | IPv4/IPv6 // \\ ) ( | Network // \\ ) +---|-----------//---------\\-------------+ | // \\ RADIUS // <- Tunnel1 \\ <- Tunnel2 | // \\ | |- MAG1-Address |- MAG2-Address | +----+ +----+ +---->|MAG1| |MAG2| +----+ +----+ | | | | [MN1] [MN2] Figure 1: The MAG and LMA are both in the home network Figure 2 shows both the LMA and the MAG are in the visited network. The MAG and LMA exchange signaling with the HAAA through the VAAA which acts as a proxy. Some visited network specific information may be added to the replies from HAAA to the MAG and LMA. Xia, et al. Expires October 9, 2009 [Page 7] Internet-Draft RADIUS-PMIPv6 April 2009 +---------------+ | HAAA & | +----------| Policy Profile| | +---------------+ | +--------+ | VAAA & | RADIUS +-----+ | Policy |<-------->| LMA | | Profile| +-----+ +--------+ | <--- LMA-Address ^ // \\ +---|------------- //---\\----------------+ ( | IPv4/IPv6 // \\ ) ( | Network // \\ ) +---|-----------//---------\\-------------+ | // \\ RADIUS // <- Tunnel1 \\ <- Tunnel2 | // \\ | |- MAG1-Address |- MAG2-Address | +----+ +----+ +---->|MAG1| |MAG2| +----+ +----+ | | [MN1] [MN2] Figure 2: The MAG and LMA are both in the visited network Figure 3 illustrates the MAG is in the visited network while the LMA is in the home network. Any message between the MAG and the HAAA is through the VAAA acting as a proxy. Some visited network specific policy may also be downloaded from the VAAA to the MAG. The LMA accesses HAAA without any proxying. Xia, et al. Expires October 9, 2009 [Page 8] Internet-Draft RADIUS-PMIPv6 April 2009 +---------------+ | HAAA & | +----------| Policy Profile| | +---------------+ | | | RADIUS +--------+ | | VAAA & | +-----+ | Policy | | LMA | | Profile| +-----+ +--------+ | <--- LMA-Address ^ // \\ +---|------------- //---\\----------------+ ( | IPv4/IPv6 // \\ ) ( | Network // \\ ) +---|-----------//---------\\-------------+ | // \\ RADIUS // <- Tunnel1 \\ <- Tunnel2 | // \\ | |- MAG1-Address |- MAG2-Address | +----+ +----+ +---->|MAG1| |MAG2| +----+ +----+ | | [MN1] [MN2] Figure 3: Only MAG is in the visited network 4. Attribute definitions 4.1. MIP6-Feature-Vector Diameter [RFC3588] reserves AVP Code space 1-255 as RADIUS attribute compatibility space. The MIP6-Feature-Vector AVP (AVP Code 124) defined in [RFC5447] is of type Unsigned64 and contains a 64-bit flags field of supported mobility capabilities. This document reserves new capability bits according to the rules in [RFC5447], and reuses some of capability bits defined in [I-D.ietf-dime-pmip6]. The following capability flag bits are defined or used in this document: PMIP6_SUPPORTED (0x0000010000000000) This is defined in [I-D.ietf-dime-pmip6]. When the MAG/NAS sets this bit in the MIP6-Feature-Vector attribute, it is an indication to the RADIUS server that the NAS supports PMIPv6. When the RADIUS server sets this bit in the response MIP6-Feature-Vector Xia, et al. Expires October 9, 2009 [Page 9] Internet-Draft RADIUS-PMIPv6 April 2009 AVP, it indicates that the RADIUS server also has PMIPv6 support. This capability flag bit can also be used to allow PMIPv6 mobility support in a subscription granularity. IP4_HOA_SUPPORTED (0x0000020000000000) This is defined in [I-D.ietf-dime-pmip6]. Assignment of the IPv4- HoA is supported [I-D.ietf-netlmm-pmip6-ipv4-support]. When the MAG sets this bit in the MIP6-Feature-Vector attribute, it indicates that the MAG implements a minimal functionality of a DHCP server (and a relay) and is able to deliver IPv4-HoA to the MN. When the RADIUS server sets this flag bit in the response MIP6-Feature-Vector attribute, it indicates that the RADIUS server has authorized the use of IPv4-HoA for the MN. If this bit is unset in the returned MIP6-Feature-Vector attribute, the RADIUS server does not authorize the configuration of IPv4 address. LOCAL_MAG_ROUTING_SUPPORTED (0x0000040000000000) This is defined in [I-D.ietf-dime-pmip6]. Direct routing of IP packets between MNs anchored to the same MAG is supported. When a MAG sets this flag bit in the MIP6-Feature-Vector, it indicates that routing IP packets between MNs anchored to the same MAG is supported, without reverse tunneling packets via the LMA or requiring any Route Optimization related signaling (e.g. the Return Routability Procedure in [RFC3775]) prior to direct routing. If this flag bit is unset in the returned MIP6-Feature- Vector AVP, the RADIUS server does not authorize direct routing of packets between MNs anchored to the same MAG. This policy feature MUST be supported per MN and subscription basis. IP4_TRANSPORT_SUPPORTED (0x0000080000000000) This document defines this bit for IPv4 transport support negotiation between the MAG and AAA. When the MAG sets this flag bit in the MIP6-Feature-Vector, it indicates that IPv4 transport is used for traffic between the MAG and the LMA. If this flag bit is unset in the returned MIP6-Feature-Vector AVP, the AAA does not authorize IPv4 transport. The MIP6-Feature-Vector attribute is also used on the LMA to the RADIUS server interface. Using the capability announcement attribute it is possible to perform a simple capability negotiation between the LMA and the RADIUS server. Those capabilities that are announced by both parties are also known to be mutually supported. Xia, et al. Expires October 9, 2009 [Page 10] Internet-Draft RADIUS-PMIPv6 April 2009 4.2. Mobile-Node-Identifier The Mobile-Node-Identifier attribute is of String and contains the mobile node identifier (MN-Identifier, see [RFC5213]) in a NAI [RFC4282] format. This AVP is used on the MAG to the RADIUS server interface. The Mobile-Node-Identifier attribute is designed for deployments where the MAG does not have a way to find out such MN identity that could be used in subsequent PBU/PBA exchanges (e.g., due to identity hiding during the network access authentication) or the HAAA wants to assign periodically changing identities to the MN. The Mobile-Node-Identifier attribute is returned in the Access-Accept message that ends a successful authentication (and possibly an authorization) exchange between the MAG and the HAAA, assuming the HAAA is also able to provide the MAG with the MN-Identifier in the first place. 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | Mobile Node Identifier... ~ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Type: Mobile-Node-Identifier to be defined by IANA. Length: >= 3 octets Mobile Node Identifier: This field is of type String and contains the MN-ID of the MN to be used in the PBUs. 4.3. PMIP6-Home-LMA-IPv6-Address Before the MAG can engage in Proxy Mobile IPv6 signaling with the LMA, it should either know the IP address of the LMA via pre- configuration, or dynamically discover it. After the MN has been successfully authenticated, the MAG can get the IPv6 address of the LMA by downloading MN's policy profile information from AAA. When the LMA is located in the home network, this attribute MAY be sent by the HAAA to the MAG in an Access-Accept packet. The Xia, et al. Expires October 9, 2009 [Page 11] Internet-Draft RADIUS-PMIPv6 April 2009 attribute carries the home LMA IPv6 address being assigned to the MAG. 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | Reserved | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Home LMA IPv6 address | . ... ... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Type: PMIP6-Home-LMA-IPv6-Address to be defined by IANA. Length: = 20 octets Reserved: Reserved for future use. The bits MUST be set to zero by the sender, and MUST be ignored by the receiver. Home LMA IPv6 address: 128-bit IPv6 address of the assigned home LMA IPv6 address. 4.4. PMIP6-Visited-LMA-IPv6-Address Figure 1 shows the interactions among the MAG, LMA, and AAA server. When the mobile node moves into a visited network, the MAG interacts with the HAAA through a visited AAA, and a visited LMA may be assigned by the visited AAA during the interaction. This attribute MAY be sent by the MAG to the VAAA in an Access- Request packet as a proposal by the MAG to allocate LMAs to the MN. This attribute MAY be sent by the VAAA to the MAG in an Access-Accept packet. The attribute carries the visited LMA IPv6 address being assigned to the MAG. Xia, et al. Expires October 9, 2009 [Page 12] Internet-Draft RADIUS-PMIPv6 April 2009 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | Reserved | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Visited LMA IPv6 address | . ... ... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Type: PMIP6-Visited-LMA-IPv6-Address to be defined by IANA. Length: = 20 octets Reserved: Reserved for future use. The bits MUST be set to zero by the sender, and MUST be ignored by the receiver. Visited LMA IPv6 address: 128-bit IPv6 address of the assigned visited LMA IPv6 address. 4.5. PMIP6-Home-LMA-IPv4-Address [I-D.ietf-netlmm-pmip6-ipv4-support] supports Proxy Mobile IPv6 signaling exchange between the MAG and LMA over IPv4 transport,that is, the LMA has an IPv4 address. The PMIP6-Home-LMA-IPv4-Address attribute contains the IPv4 address of the LMA assigned by the HAAA. When the LMA is located in the home network, this attribute MAY be sent by the HAAA to the MAG in an Access-Accept packet. Xia, et al. Expires October 9, 2009 [Page 13] Internet-Draft RADIUS-PMIPv6 April 2009 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | Reserved | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Home LMA IPv4 address | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Type: PMIP6-Home-LMA-IPv4-Address to be defined by IANA. Length: = 8 octets Reserved: Reserved for future use. The bits MUST be set to zero by the sender, and MUST be ignored by the receiver. Home LMA IPv4 address: 32-bit IPv4 address of the assigned LMA. 4.6. PMIP6-Visited-LMA-IPv4-Address When the LMA with IPv4 address is located in the visited network, the VAAA may assign the LMA to the MAG during MN's authentication. PMIP6-Visited-LMA-IPv4-Address attribute MAY be sent by the MAG to VAAA in an Access-Request packet as a proposal by the MAG to allocate a LMA to the MN. This attribute MAY be sent by the VAAA to the MAG in an Access-Accept packet. Xia, et al. Expires October 9, 2009 [Page 14] Internet-Draft RADIUS-PMIPv6 April 2009 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | Reserved | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Visited LMA IPv4 address | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Type: PMIP6-Visited-LMA-IPv4-Address to be defined by IANA. Length: = 8 octets Reserved: Reserved for future use. The bits MUST be set to zero by the sender, and MUST be ignored by the receiver. IPv4 LMA address: 32-bit IPv4 address of the assigned LMA. 4.7. PMIP6-Home-LMA-FQDN An AAA server may assign an Fully Qualified Domain Name (FQDN) of the LMA to the MAG. The MAG can perform DNS query with the FQDN to derive the LMA address. When the LMA is located in the home network, PMIP6-Home-LMA-FQDN contains FQDN of the LMA. This attribute is sent by the HAAA to the MAG in an Access-Accept packet. The attribute carries the FQDN of the assigned LMA. Xia, et al. Expires October 9, 2009 [Page 15] Internet-Draft RADIUS-PMIPv6 April 2009 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | FQDN of home LMA.... +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Type: PMIP6-Home-LMA-FQDN to be defined by IANA. Length: Variable length. FQDN of the assigned HA: The data field MUST contain a FQDN as described in RFC 1035. 4.8. PMIP6-Visited-LMA-FQDN When the LMA is located in the visited network, PMIP6-Home-LMA-FQDN MAY be sent by the MAG to VAAA in an Access-Request packet as a proposal by the MAG to allocate a LMA to the MN. This attribute is sent by VAAA to the MAG in an Access-Accept packet. The attribute carries the FQDN of the assigned LMA. 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | FQDN of visited LMA.... +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Type: PMIP6-Visited-LMA-FQDN to be defined by IANA. Length: Variable length. FQDN of the assigned HA: The data field MUST contain a FQDN as described in RFC 1035. Xia, et al. Expires October 9, 2009 [Page 16] Internet-Draft RADIUS-PMIPv6 April 2009 4.9. PMIP6-Home-HL-Prefix Mobile Node's Home Network Prefix (MN-HNP) is a prefix assigned to the link between the MN and the MAG. The MN configures its interface from its home network prefix(es). When the LMA is located in the home network, PMIP6-Home-HL-Prefix attribute is used to carry the MN- HNP from the HAAA to the MAG. The low 64 bits of the prefix MUST be all zeroes. The PMIP6-Home-HL-Prefix attribute is also used on the LMA-to-HAAA interface containing the prefix assigned to the MN. If the LMA delegates the assignment of the MN-HNP to the HAAA, the AVP MUST contain all zeroes address (i.e., 0::0) in the request message. If the LMA delegated the MN-HNP assignment to the HAAA, then the AVP contains the HAAA assigned MN-HNP in the response message. 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | Reserved | Prefix-Length | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | | . Home Link Prefix . . . +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Type: PMIP6-Home-HL-Prefix to be defined by IANA. Length: = 20 octets. Reserved: Reserved for future use. The bits MUST be set to zero by the sender, and MUST be ignored by the receiver. Prefix-Length: This field indicates the prefix length of the Home Link Prefix. Home Link Prefix: Home link prefix for the MN's address configuration. Xia, et al. Expires October 9, 2009 [Page 17] Internet-Draft RADIUS-PMIPv6 April 2009 4.10. PMIP6-Visited-HL-Prefix When the LMA is located in the visited network, PMIP6-Visited-HL- Prefix attribute is used to carry the MN-HNP, if available, from the VAAA to the MAG. The low 64 bits of the prefix MUST be all zeroes. The PMIP6-Visited-HL-Prefix attribute is also used on the LMA to VAAA interface containing the prefix assigned to the MN. If the LMA delegates the assignment of the MN-HNP to the VAAA, the AVP MUST contain all zeroes address (i.e., 0::0) in the request message. If the LMA delegated the MN-HNP assignment to the VAAA, then the AVP contains the VAAA assigned MN-HNP in the response message. 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | Reserved | Prefix-Length | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | | . Visited Home Link Prefix . . . +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Type: PMIP6-Visited-HL-Prefix to be defined by IANA. Length: = 20 octets. Reserved: Reserved for future use. The bits MUST be set to zero by the sender, and MUST be ignored by the receiver. Prefix-Length: This field indicates the prefix length of the Home Link. Visited Home Link Prefix: Home link prefix for the MN's address configuration. Xia, et al. Expires October 9, 2009 [Page 18] Internet-Draft RADIUS-PMIPv6 April 2009 4.11. PMIP6-Home-Interface-ID The home link prefixes assigned to the mobile node have to be maintained on a per-interface basis. When the LMA is located in the home network, PMIP6-Home-Interface-ID attribute conveys 64 bits interface identifier representing different interfaces. There can be multiple unique home link prefix for each interface of the mobile node. In some cases, the attribute may be assigned by the HAAA for MN-HoA formulation. This attribute MAY be sent by the LMA or the MAG to the HAAA in an Access-Request packet as a proposal. This attribute MAY be sent by HAAA to the LMA in an Access-Accept packet. 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | Reserved | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | | . Home Interface Identifier . . . +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Type: PMIP6-Home-Interface-ID to be defined by IANA. Length: = 12 octets. Home Interface Identifier: 64 bits long using for differentiating different interfaces of the MN. 4.12. PMIP6-Visited-Interface-ID When the LMA is located in the visited network, PMIP6-Visited- Interface-ID attribute MAY be sent by the LMA or the MAG to the VAAA in an Access-Request packet as a proposal. This attribute MAY be sent by the VAAA to the LMA in an Access-Accept packet. Xia, et al. Expires October 9, 2009 [Page 19] Internet-Draft RADIUS-PMIPv6 April 2009 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | Reserved | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | | . Visited Interface Identifier . . . +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Type: PMIP6-Home-Interface-ID to be defined by IANA. Length: = 12 octets. Visited Interface Identifier: 64 bits long using for differentiating different interfaces of the mobile node. 4.13. PMIP6-Home-IPv4-HoA [I-D.ietf-netlmm-pmip6-ipv4-support] specifies extensions to Proxy Mobile IPv6 protocol which enable IPv4 home address mobility support to the MN. The PMIP6-Home-IPv4-HoA attribute is of type Address and contains the IPv4-HoA of the MN. The primary use of this attribute is to carry the IPv4-HoA from the HAAA to the MAG. The PMIP6-Home-IPv4-HoA is also used on the LMA-to-HAAA interface. If the LMA in the home network delegates the assignment of the IPv4- HoA to the HAAA, the attribute MUST contain all zeroes address in the request message, and then the attribute contains the HAAA assigned IPv4-HoA in the response message. Xia, et al. Expires October 9, 2009 [Page 20] Internet-Draft RADIUS-PMIPv6 April 2009 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | Reserved | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Home IPv4 HoA | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Type: PMIP6-Home-IPv4-HoA to be defined by IANA. Length: = 8 octets Reserved: Reserved for future use. The bits MUST be set to zero by the sender, and MUST be ignored by the receiver. Home IPv4 HoA: This field is of type Address and contains the IPv4 home address of the MN in the home network. 4.14. PMIP6-Visited-IPv4-HoA When both the MAG and the LMA are in the visited network, the PMIP6- Visited-IPv4-HoA is used for containing IPv4-HoA of the MN. This attribute is of type Address and the primary usage is to carry the IPv4-HoA from VAAA to the MAG. The PMIP6-Visited-IPv4-HoA is also used on the LMA-to-VAAA interface. If the LMA delegates the assignment of the IPv4-HoA to the VAAA, the attribute MUST contain all zeroes address in the request message, and then the attribute contains the VAAA assigned IPv4-HoA in the response message. Xia, et al. Expires October 9, 2009 [Page 21] Internet-Draft RADIUS-PMIPv6 April 2009 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | Reserved | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Visited IPv4 HoA | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Type: PMIP6-Visited-IPv4-HoA to be defined by IANA. Length: = 8 octets Reserved: Reserved for future use. The bits MUST be set to zero by the sender, and MUST be ignored by the receiver. Visited IPv4 HoA: This field is of type Address and contains the IPv4 home address of the MN in the visited network. 4.15. PMIP6-Home-DHCP4-Server-Address The PMIP6-Home-DHCP4-Server-Address contains the IP address of the DHCPv4 server in the home network assigned to the MAG serving the newly attached MN. The HAAA MAY assign a DHCP server to the MAG in deployments where the MAG acts as a DHCP Relay [I-D.ietf-netlmm-pmip6-ipv4-support]. Xia, et al. Expires October 9, 2009 [Page 22] Internet-Draft RADIUS-PMIPv6 April 2009 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | Reserved | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Home DHCPv4 server address | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Type: PMIP6-Home-DHCP4-Server-Address to be defined by IANA. Length: = 8 octets Reserved: Reserved for future use. The bits MUST be set to zero by the sender, and MUST be ignored by the receiver. Home DHCPv4 server address: This field contains 4-octet DHCPv4 server address for the MN in the home network. 4.16. PMIP6-Visited-DHCP4-Server-Address When both the MAG and the LMA are in the visited network, the PMIP6- Visited-DHCP4-Server-Address contains the IP address of the DHCPv4 server in the visited network assigned to the MAG serving the newly attached MN. The VAAA MAY assign a DHCPv4 server to the MAG in deployments where the MAG acts as a DHCP Relay [I-D.ietf-netlmm-pmip6-ipv4-support]. Xia, et al. Expires October 9, 2009 [Page 23] Internet-Draft RADIUS-PMIPv6 April 2009 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | Reserved | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Visited DHCPv4 server address | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Type: PMIP6-Visited-DHCP4-Server-Address to be defined by IANA. Length: = 8 octets Reserved: Reserved for future use. The bits MUST be set to zero by the sender, and MUST be ignored by the receiver. Visited DHCPv4 server address: This field contains 4-octet DHCPv4 server address for the MN in the visited network. 4.17. PMIP6-Home-DHCP6-Server-Address The PMIP6-Home-DHCP6-Server-Address contains the IP address of the DHCPv6 server in the home network assigned to the MAG serving the newly attached MN. The HAAA MAY assign a DHCPv6 server to the MAG in deployments where the MAG acts as a DHCP Relay [RFC5213]. Xia, et al. Expires October 9, 2009 [Page 24] Internet-Draft RADIUS-PMIPv6 April 2009 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | Reserved | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | | . Home DHCPv6 server address . . . +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Type: PMIP6-Home-DHCP6-Server-Address to be defined by IANA. Length: = 20 octets Reserved: Reserved for future use. The bits MUST be set to zero by the sender, and MUST be ignored by the receiver. Home DHCPv6 server address: This field contains 16-octet DHCPv6 server address for the MN in the home network. 4.18. PMIP6-Visited-DHCP6-Server-Address When both the MAG and the LMA are in the visited network, the PMIP6- Visited-DHCP6-Server-Address contains the IP address of the DHCPv6 server in the visited network assigned to the MAG serving the newly attached MN. The VAAA MAY assign a DHCPv6 server to the MAG in deployments where the MAG acts as a DHCP Relay [RFC5213]. Xia, et al. Expires October 9, 2009 [Page 25] Internet-Draft RADIUS-PMIPv6 April 2009 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | Reserved | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | | . Visited DHCPv6 server address . . . +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Type: PMIP6-Visited-DHCP6-Server-Address to be defined by IANA. Length: = 20 octets Reserved: Reserved for future use. The bits MUST be set to zero by the sender, and MUST be ignored by the receiver. Visited DHCPv6 server address: This field contains 16-octet DHCPv6 server address for the MN in the visited network. 4.19. Service-Selection The Service-Selection attribute is of type String and contains the name of the service or the external network that the mobility service should be associated with. The RADIUS server MAY return the Service- Selection attribute to the MAG and in that way indicate the default service to the MAG. Between the LMA to the RADIUS server interface, the LMA MAY populate the Service-Selection attribute with the service information found from the received PBU, if such information is available [RFC5149]. Xia, et al. Expires October 9, 2009 [Page 26] Internet-Draft RADIUS-PMIPv6 April 2009 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | Service Identifier... ~ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Type: Service-Selection to be defined by IANA. Length: >= 3 octets Service Identifier: This field is of type String and contains the Service Identifier the MN MUST be associated with. 4.20. Calling-Station-Id The Calling-Station-Id attribute is of type String and contains a Link-Layer Identifier of the MN. This identifier may correspond to a real physical interface or something that the MAG has generated. 5. MAG to RADIUS server interface 5.1. General The MAG to the RADIUS server interface is primarily used for downloading the Policy Profile (i.e., to bootstrap the PMIPv6 mobility service session) when a MN attaches and authenticates and authorizes to a PMIPv6 domain. Whenever the MAG sends a RADIUS request message to the RADIUS server, the User-Name attribute SHOULD contain the MN identity. At minimum the home realm of the MN MUST be available at the MAG when the network access authentication takes place. Otherwise the MAG is not able to route the RADIUS request messages towards the correct RADIUS server. The MN identity MUST be in Network Access Identifier (NAI) [RFC4282] format. 5.2. Table of Attributes The following table provides a guide to which attributes may be found in authentication and authorization process. Xia, et al. Expires October 9, 2009 [Page 27] Internet-Draft RADIUS-PMIPv6 April 2009 Request Accept Reject Challenge # Attribute 0 0-1 0 0 TBD PMIP6-Home-LMA-IPv6-Address 0-1 0-1 0 0 TBD PMIP6-Visited-LMA-IPv6-Address 0 0-1 0 0 TBD PMIP6-Home-LMA-IPv4-Address 0-1 0-1 0 0 TBD PMIP6-Visited-LMA-IPv4-Address 0 0-1 0 0 TBD PMIP6-Home-LMA-FQDN 0-1 0-1 0 0 TBD PMIP6-Visited-LMA-FQDN 0 0-1 0 0 TBD PMIP6-Home-HL-Prefix 0 0-1 0 0 TBD PMIP6-Visited-HL-Prefix 0 0-1 0 0 TBD PMIP6-Home-Interface-ID 0 0-1 0 0 TBD PMIP6-Visited-Interface-ID 0 0-1 0 0 TBD PMIP6-Home-IPv4-HoA 0 0-1 0 0 TBD PMIP6-Visited-IPv4-HoA 0 0-1 0 0 TBD PMIP6-Home-DHCP4-Server-Address 0-1 0-1 0 0 TBD PMIP6-Visited-DHCP4-Server-Address 0 0-1 0 0 TBD PMIP6-Home-DHCP6-Server-Address 0-1 0-1 0 0 TBD PMIP6-Visited-DHCP6-Server-Address 0 1 0 0 TBD Mobile-Node-Identifier 0-1 0-1 0 0 124 MIP6-Feature-Vector 0-1 0-1 0 0 TBD Service-Selection 0-1 0 0 0 31 Calling-Station-Id 6. LMA to RADIUS server interface 6.1. General The LMA-to-HAAA interface may be used for multiple purposes. These include the authorization of the incoming PBU, updating the LMA address to the HAAA, accounting and PMIPv6 session management. 6.2. Table of Attributes The following table provides a guide to which attributes may be found in authentication and authorization process. Request Accept Reject Challenge # Attribute 0-1 0-1 0 0 TBD PMIP6-Home-HL-Prefix 0-1 0-1 0 0 TBD PMIP6-Home-IPv4-HoA 0 0-1 0 0 TBD PMIP6-Home-Interface-ID 0 0-1 0 0 TBD PMIP6-Visited-Interface-ID 1 0 0 0 TBD Mobile-Node-Identifier 0-1 0-1 0 0 124 MIP6-Feature-Vector 0-1 0-1 0 0 TBD Service-Selection 0-1 0 0 0 31 Calling-Station-Id Xia, et al. Expires October 9, 2009 [Page 28] Internet-Draft RADIUS-PMIPv6 April 2009 7. Accounting 7.1. Accounting at LMA The accounting at the LMA to AAA server interface is based on [RFC2865] and [RFC2866]. The interface must support the transfer of accounting records needed for service control and charging. These include (but may not be limited to): time of binding cache entry creation and deletion, octets sent and received by the MN in bi- directional tunneling, etc. 7.2. Accounting at MAG The accounting at the MAG to AAA server interface is based on [RFC2865] and [RFC2866]. The interface must also support the transfer of accounting records which include: time of binding cache entry creation and deletion, octets sent and received by the MN in bi-directional tunneling, etc. If there is data traffic between a visiting mobile node and a correspondent node that is locally attached to an access link connected to the mobile access gateway, the mobile access gateway MAY optimize on the delivery efforts by locally routing the packets and by not reverse tunneling them to the mobile node's local mobility anchor. In this case, local data traffic MUST be reported to AAA servers through RADIUS protocol. 7.3. Table of Attributes The following table provides a guide to which attributes may be found in accounting messages. Request Interim Stop Attribute 0-1 0 0-1 PMIP6-Home-LMA-IPv6-Address 0-1 0 0-1 PMIP6-Visited-LMA-IPv6-Address 0-1 0 0-1 PMIP6-Home-LMA-IPv4-Address 0-1 0 0-1 PMIP6-Visited-LMA-IPv4-Address 0-1 0 0-1 PMIP6-Home-HL-Prefix 0-1 0 0-1 PMIP6-Visited-HL-Prefix 0-1 0 0-1 PMIP6-Home-IPv4-HoA 0-1 0 0-1 PMIP6-Visited-IPv4-HoA 0-1 0 0-1 Service-Selection 0-1 0 0-1 MIP6-Feature-Vector 0-1 0-1 0-1 Mobile-Node-Identifier 0-1 0 0-1 Calling-Station-Id Xia, et al. Expires October 9, 2009 [Page 29] Internet-Draft RADIUS-PMIPv6 April 2009 8. Security Considerations The RADIUS messages may be transported between the MAG and/or the LMA to the RADIUS server via one or more AAA brokers or RADIUS proxies. In this case the HA to the RADIUS server AAA communication relies on the security properties of the intermediate AAA brokers and RADIUS proxies. 9. IANA consideration 9.1. Attribute Type Codes This specification defines the following new RADIUS attribute type codes: Mobile-Node-Identifier is set to TBD PMIP6-Home-LMA-IPv6-Address is set to TBD PMIP6-Visited-LMA-IPv6-Address is set to TBD PMIP6-Home-LMA-IPv4-Address is set to TBD PMIP6-Visited-LMA-IPv4-Address is set to TBD PMIP6-Home-LMA-FQDN is set to TBD PMIP6-Visited-LMA-FQDN is set to TBD PMIP6-Home-HL-Prefix is set to TBD PMIP6-Visited-HL-Prefix is set to TBD PMIP6-Home-Interface-ID is set to TBD PMIP6-Visited-Interface-ID is set to TBD PMIP6-Home-IPv4-HoA is set to TBD PMIP6-Visited-IPv4-HoA is set to TBD PMIP6-Home-DHCP4-Server-Address is set to TBD PMIP6-Visited-DHCP4-Server-Address is set to TBD PMIP6-Home-DHCP6-Server-Address is set to TBD PMIP6-Visited-DHCP6-Server-Address is set to TBD Service-Selection is set to TBD Calling-Station-Id is set to TBD 9.2. Namespaces This specification defines new values to the Mobility Capability registry (see [RFC5447]) for use with the MIP6- Feature-Vector AVP: Token | Value ----------------------------------+-------------------- PMIP6_SUPPORTED | 0x0000010000000000 IP4_HOA_SUPPORTED | 0x0000020000000000 Xia, et al. Expires October 9, 2009 [Page 30] Internet-Draft RADIUS-PMIPv6 April 2009 LOCAL_MAG_ROUTING_SUPPORTED | 0x0000040000000000 IP4_TRANSPORT_SUPPORTED | 0x0000080000000000 10. Acknowledgements The authors would like to thank Glen Zorn, Avi Lior for reviewing the document. The authors would also like to thank the authors of [I-D.ietf-dime-pmip6] as this document re-uses some procedural ideas of the mentioned specification. Xia, et al. Expires October 9, 2009 [Page 31] Internet-Draft RADIUS-PMIPv6 April 2009 11. References 11.1. Normative References [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. [RFC2865] Rigney, C., Willens, S., Rubens, A., and W. Simpson, "Remote Authentication Dial In User Service (RADIUS)", RFC 2865, June 2000. [RFC5213] Gundavelli, S., Leung, K., Devarapalli, V., Chowdhury, K., and B. Patil, "Proxy Mobile IPv6", RFC 5213, August 2008. [RFC4282] Aboba, B., Beadles, M., Arkko, J., and P. Eronen, "The Network Access Identifier", RFC 4282, December 2005. [RFC5447] Korhonen, J., Bournelle, J., Tschofenig, H., Perkins, C., and K. Chowdhury, "Diameter Mobile IPv6: Support for Network Access Server to Diameter Server Interaction", RFC 5447, February 2009. [RFC3588] Calhoun, P., Loughney, J., Guttman, E., Zorn, G., and J. Arkko, "Diameter Base Protocol", RFC 3588, September 2003. 11.2. Informative references [RFC2866] Rigney, C., "RADIUS Accounting", RFC 2866, June 2000. [RFC3748] Aboba, B., Blunk, L., Vollbrecht, J., Carlson, J., and H. Levkowetz, "Extensible Authentication Protocol (EAP)", RFC 3748, June 2004. [RFC5149] Korhonen, J., Nilsson, U., and V. Devarapalli, "Service Selection for Mobile IPv6", RFC 5149, February 2008. [RFC3775] Johnson, D., Perkins, C., and J. Arkko, "Mobility Support in IPv6", RFC 3775, June 2004. [I-D.ietf-netlmm-pmip6-ipv4-support] Wakikawa, R. and S. Gundavelli, "IPv4 Support for Proxy Mobile IPv6", draft-ietf-netlmm-pmip6-ipv4-support-10 (work in progress), March 2009. [I-D.ietf-dime-pmip6] Korhonen, J., Bournelle, J., Chowdhury, K., Muhanna, A., and U. Meyer, "Diameter Proxy Mobile IPv6: Mobile Access Gateway and Local Mobility Anchor Interaction with Xia, et al. Expires October 9, 2009 [Page 32] Internet-Draft RADIUS-PMIPv6 April 2009 Diameter Server", draft-ietf-dime-pmip6-01 (work in progress), March 2009. Xia, et al. Expires October 9, 2009 [Page 33] Internet-Draft RADIUS-PMIPv6 April 2009 Authors' Addresses Frank Xia Huawei USA 1700 Alma Dr. Suite 500 Plano, TX 75075 Phone: +1 972-509-5599 Email: xiayangsong@huawei.com Behcet Sarikaya Huawei USA 1700 Alma Dr. Suite 500 Plano, TX 75075 Phone: +1 972-509-5599 Email: sarikaya@ieee.org Jouni Korhonen Nokia Siemens Networks Email: jouni.nospam@gmail.com Sri Gundavelli Cisco 170 West Tasman Drive San Jose, CA 95134 Email: sgundave@cisco.com Damjan Damic Nokia Siemens Networks Heinzelova 70a Zagreb 10000, Croatia Email: damjan.damic.ext@nsn.com Xia, et al. Expires October 9, 2009 [Page 34]