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RADIUS extensions for PCP

draft-maglione-pcp-radius-ext-02

R. Maglione – Telecom Italia

D. Cheng – Huawei Technologies

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Motivations

draft-bpw-pcp-dhcp defines DHCP and DHCPv6 options which can be used to provision a PCP Server reachability information (FQDN of a PCP Server)

In a broadband network, customer information is usually stored on a AAA/RADIUS server and DHCP/DHCPv6 is used to populate user's configuration information

This document specifies a new RADIUS attribute to carry FQDN of a PCP server

A similar approach for provisioning the FDQN of the AFTR is already defined for DSLite in draft-ietf-softwire-dslite-radius-ext

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DHCPv6 based PCP Configuration

PCP Client

DHCPv6 Client

NAS

DHCPv6 Server

RG

PCP

Server

DHCPv6 ( .. Option_PCP_Server )

DHCPv6 ( … Option_PCP_Server)

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PCP Client

DHCPv6 Client

NAS: DHCPv6 Server

NAS: RADIUS Client

AAA Radius Server

User profile:Username pwdDelegated-prefix...PCP-Server-Name

Access-

Request

Access-Accept ( ..

PCP-Server-Name)

NAS translates PCP-Server-Name

Radius Attribute into DHCPv6 option

RADIUS + DHCPv6 based PCP Configuration

DHCPv6 ( ..Option_PCP_server )

DHCPv6 ( Option_PCP_Server)

PCP

Server

RG

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PCP-Server-Name Radius Attribute

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 | PCP-Server-Name (FQDN) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | PCP-Server-Name (FQDN)(cont) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

The PCP-server-name attribute contains a Fully Qualified Domain Name (FQDN) that refers to a PCP server the client requests to establish a connection to for PCP related service.

The NAS shall use the name returned in the RADIUS PCP-server-name attribute to populate the PCP Server FQDN DHCP Sub-Option in IPv4 addressing context, or the PCP Server FQDN DHCPv6 Option in IPv6 addressing context

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Changes

-00: initial draft -01: refresh of the draft with no change -02: this version integrates the comments

received from Mohamed Boucadair

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Questions?