Re: [Dime] Diameter application for PMIP6 (chargeable-User-ID) question

Hi Rafael,

On Jul 16, 2008, at 10:41 PM, Bibi Blocksberg wrote:

>  Hi all,
>
>  I've one question regarding the draft 'korhonen-dime-pmip6-03.txt'
>  (http://tools.ietf.org/id/draft-korhonen-dime-pmip6-03.txt).
>
>
>  If the MAG performs a user-authentication toward the HAAA
>  server, it uses the User-Name AVP to identify the MN. After a
>  successful authentication the HAAA server replies with a
>  Chargeable-User-Identity.
>
>  My question: Should the MAG use the Chargeable-User-Identity
>  for the PBU and its MN-ID option, or should the MAG use the
>  content of the User-Name AVP as MN-ID option in the PBU?

If the Chargeable-User-Identity is returned then that identity
is to be used.

>  Section 6.2 on page 14 says that the User-Name
>  AVP must contain the MN identity if the LMA sends a Diameter
>  message toward the HAAA server. The value for the User-Name
>  AVP the LMA has extracted from the received PBU (MN-ID option).
>
>  In my view it isn't clear if the User-Name AVP toward the HAAA
>  server should contain the Chargeable-User-ID AVP content to  
> authorize the
>  PBU, or if the AA-Request and its User-Name AVP contains
>  the NAI, which was initially used to authenticate the MN by the MAG?

The sequence is as follows:

MN -> MAG: identity1 = some auth method or link specific identity
MAG -> HAAA: User-Name = identity1
MAG <- HAAA: may return a new identity2 in Chargeable-user-Id
MAG -> LMA: PBU MN-ID = identity2, if available, otherwise
             PBU MN-ID = identity1
LMA -> HAAA: User-name = identity from PBU MN-ID i.e. may be
              identity1 or identity2

Hope this clarifies.

>  If the User-Name AVP toward the HAA server contains the Chargeable- 
> User-ID
>  AVP content, then the real identity of the MN can be concealed  
> from the
> LMA, but
>  the HAAA server is able to identify the real identity of MN, as it  
> has
> assigned the
>  Chargeable User-ID.

Yes.

>  I hope, you can provide me with some information on this matter.
>
>  Thanks you in advance
>
>  Rafael

Cheers,
	Jouni

>
>
> _______________________________________________
> DiME mailing list
> DiME@ietf.org
> https://www.ietf.org/mailman/listinfo/dime

_______________________________________________
DiME mailing list
DiME@ietf.org
https://www.ietf.org/mailman/listinfo/dime