Re: [Dime] AD review of draft-ietf-dime-capablities-update-05

["Romascanu, Dan (Dan)" <[e-mail]>]

 Thanks for the answer. See in-line. OK parts deleted. 

Regards,

Dan


> -----Original Message-----
> From: Glen Zorn [mailto:[e-mail]] 
> Sent: Monday, September 20, 2010 6:06 PM
> To: Romascanu, Dan (Dan)
> Cc: [e-mail]; [e-mail]
> Subject: RE: AD review of draft-ietf-dime-capablities-update-05
> 
> Romascanu, Dan (Dan) [mailto:[e-mail]] writes:
> 


...

> 
> > 
> > T2. What happens if the receiver of a CUR does not return a 
> > Capabilities-Update-Answer (CUA)? Is there any timeout or 
> > retransmission strategy in place?
> 
> Um, TCP?  I guess that I don't understand the question.

So the answer is that there is no mechanism for timeout / retransmission
at the application layer. 

>  
> > 
> > 
> > E1. I find this sentence at the end of the first paragraph 
> in Section 
> > 4 to be imprecise:
> > 
> > > This message allows the
> >    update of a peer's capabilities (supported Diameter applications,
> >    etc.).
> > 
> > What belongs to etc. must be defined clearly. Actually at 
> this point 
> > there is need to define precisely what capabilities are 
> covered by the 
> > message, and if there is a way to extend this list in the future.
> 
> Unfortunately, I'm not sure that such a list exists (or has 
> ever existed ), even for the CER/CEA command pair; certainly, 
> neither RFC 3588 nor 3588bis include one.  Both say 
> 
>    When two Diameter peers establish a transport connection, they MUST
>    exchange the Capabilities Exchange messages, as specified 
> in the peer
>    state machine (see Section 5.6).  This message allows the discovery
>    of a peer's identity and its capabilities (protocol version number,
>    supported Diameter applications, security mechanisms, etc.)
> 
> The CUR/CEA messages only contain a subset of the 
> capabilities advertised via the CER/CEA mechanism, so if it's 
> really necessary to list them maybe the first thing to do is 
> create the master list in 3588bis.
> 

Other opinions? What did people implement? 

...