On 16 July 2014 09:11, Rob Shakir <[email protected]> wrote:
> The realm/service selection name is generally more relevant to IPStream or 
> WBMC Shared (as per SIN471) rather than WBC.
>
> The issue you are facing is that the selection of authentication 
> infrastructure is done on the subscriber <-> CP mapping - such that there is 
> a tight coupling between the RADIUS authenticating the CP and the forwarding 
> context that the authenticated user is placed into. WBC will determine the CP 
> that the line belongs to, and then request RADIUS authentication from that 
> particular CP’s RADIUS. Since this is the case, then your BT Business -> 
> other CP migration is doing what is expected — authenticating with the BTB 
> RADIUS infrastructure, rather than your own since the RADIUS is selected on 
> the calling line ID (not the authentication details - which WBC passes 
> transparently). The same is true with WBMC Shared CPs, the “owning CP” is 
> identified, and their RADIUS infrastructure is consulted for authentication 
> until such time as the migration has completed. In the WBMC Shared case the 
> SSN is used to differentiate different behaviours required for different sets 
> of EUs of the same CP.
>
> The potential means to ease your migration path is to ask the owning CP to 
> act as a proxy RADIUS for the lines that you are migrating to your own 
> infrastructure (although, this of course requires co-operation of the 
> existing CP for the line) — such that your authentication details are valid 
> for the subscriber on both sets of infrastructure; or alternatively 
> determining a means to authenticate these lines without checking the PPP 
> authentication credentials on your own infrastructure (for instance, an 
> access accept that is based on the SID (BBEU/FTIP/BBIP…) — meaning that once 
> the line is migrated, then your infrastructure still authenticates the user, 
> regardless of the PPP username/password that is configured.


Hi Rob,

Thanks for chiming in, that is greatly appreciated however what you
have said is contrary to my initial testing.

I have connected a CPE to a WBC line and successfully authenticated
using PPP details for CP1 to which I have RADIUS access and I can see
then authentication coming in from BTW and the authentication is
successful. I have also authenticated to CP2 using their PPP details
and didn't see the authentication come in to CP1s RADIUS from BTW, CP2
has confirmed they have the access-request and it was accepted and on
the CPE I see the PPP sesssion is up and running.

It seems that it isn't always the case the calling ID is mapped to a
single CP. Can you expand on that at all?

Kind regards,
James.

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