Re: [Help-gnu-radius] GNU Radius and 'NAS has wrong ID' problem

[Scott Lambert]

On Wed, Aug 26, 2009 at 09:25:26AM -0700, Paul Cole wrote:
> Hi everyone,
> 
> I have set up a 7206 vxr cisco router to act as a PPPoE server having an
> radius to authenticate customers.
> 
> I am in a testing phase and I am currently dealing with a serious issue
> concerning this error : 'NAS has wrong ID'...
> 
> I am testing with 2 users and each of them can access to the server and get
> connected bu when I am trying to see in radius if they are connected, I can
> only see one user connected (radwho command) and the other user's connection
> is flapping but I can't see them connected both when physically they are
> connected on the PPPoE server...the radius log shows them connected
> (connection OK) but is showing the message about the wrong NAS ID...
> 
> Any idea about what could cause this and how to solve it ?

I'm not exactly certain I'm barking up the right tree here, but here is
a guess.

Does the cisco have a config entry similar to ?:

 ip radius source-interface (interface with the IP address which is in
                              your clients configuration)

i.e.

 ip radius source-interface Loopback0

Where Loopback0 has been configured with your management IP for the
router.

If not, the Cisco will talk to your radius server with the IP of the
interface closest to the radius server, which may not be the IP you
configured in your radius clients configuration.

-- 
Scott Lambert                    KC5MLE                       Unix SysAdmin
address@hidden