RE: [DNA] question on draft-ietf-dna-link-information-01.txt

[john.loughney@nokia.com]

Hi Eric,


> >    ... It is only after the
> >    PDP Context has been established, address autoconfiguration and
> >    tunneling mechanism have taken place that the MT's IP packets can be
> >    forwarded to and from its remote IP peers.  
> > 
> > Address autoconfiguration doesn't apply to IPv4.  
> 
> The document specifically address IPv6...
> 
> > Also, there 
> > are some other issues with IPv6.
> 
> Could you be more explicit about these issues? The new 
> revision of the document was meant so fix inaccuracies that 
> remained from the document originally presenting the IPv4 PDP 
> contex activation process.

Let me re-read the text and see if I have some text to suggest.

> > In general, I think the main points of the section should be:
> > 
> >    The successful establishment of a PDP Context on a GPRS 
> indicates a
> >    link-up event. A PDP Context deactivation indicates a link 
> > down event
> >    notification.
> 
> I think we all agree on this, but further explanantions were 
> required as to why the establishment of a PDP contextx could 
> be an indication of link-up

OK, but the current explanations are not accurate.

> > Section 2.2 covers 3GPP2 air interfaces & networks somewhat 
> > better, but I think a more rigorous seperation between the 
> > air interface and network side would be good.
> > 
> > Also, just to confuse things, both 3GPP and 3GPP2 networks 
> > are supporting WLAN access, so ultimately, we may like to 
> > restrict these sections more to the air interface than the SDO.
> > 
> > Is there any consideration about mentioning 802.21? This is, 
> > of course, a work in progress, but I would suggest that it at 
> > least be metioned, as it is relevant here.
> > 
> 
> The document aims at cataloguing events from various link 
> layer technologues. 802.21 is not a link layer technology. It 
> is intending at optimizing and facilitating handovers across 
> link layer technologies. In that respect, 802.21 is not to be 
> listed along GPRS, CDMA1x-EVDVO or 802.11. However there are 
> definitely links between the aim of the document and the 
> scope of 802.21

I was not thinking that there should anything other than a mention
that 802.21 is working on some of the same issues, maybe that is 
enough.

John