RE: Issue with Guidelines document

["Glen Zorn" <glenzorn@comcast.net>]

> Greg Weber wrote:
> >>  I would like to know what it *means* to have VSA's in an
> >> Accounting-Response.  What does the NAS do with them?  Log them?
> Ignore
> >> them?  Change it's behavior?
> >
> > This can be used to communicate server load or pending planned
> downtime
> > information back to the NAS which then can be used in server
> selection
> > algorithms.
> 
>   That sounds like a bit of a hack to me.  "Yes I've stored the
> accounting data for bob, and by the way, I'm rebooting in 5 minutes".

Perhaps you could suggest a better way to accomplish this?  Maybe it's
really not needed: much more efficient to just wait till the server goes
away then retry a few times.

> 
> >  I believe there's a commercial server in the PacketCable space
> > doing this (for voice gateway RADIUS clients).  Also have heard some
> > discussion about a server being able to dynamically adjust the
> interim
> > accounting
> > record interval by setting a VSA in the accounting response
> (mimicking a
> > Diameter feature), but I'm not sure if that's implemented by any
> servers.
> 
>   I would suggest that CoA might be a better choice for that.

Excellent suggestion: it's not like the semantics of the CoA exchange bind
it to a specific session, while the Accounting-Response is a generic
accounting-related ACK.  

...


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