[DNA-BOF] =?EUC-KR?Q?=AE=A1?==?EUC-KR?Q?Re_:Re:_[DNA-BOF]_Draft_charter_now_onlin?==?EUC-KR?Q?e__________________=C3=D6=C1=F8=C7=F5______________i=5FNet?==?EUC-KR?Q?working=5FLAB_________?==?EUC-KR?Q?_______________=BB=EF=BC=BA=C1=BE=C7=D5=B1=E2=BC=FA?==?EUC-KR?Q?=BF=F8____________________?==?EUC-KR?Q?______=C0=FC=B9=AE=BF=AC=B1=B8=BF=F8__________?=

[=?EUC-KR?B?w9bB+Mf1?= <jinchoe@samsung.com>]

Hi Greg

Greg Daley Wrote: 

> Since we're just talking terminology here, why don't we talk about
> Network Attachment occurring at the network layer (such that
> IP datagrams may be sent and received), and Datalink Attachment
> as the link-layer operation which allows link-frames to be exchanged.
>
> I'd find it confusing if we were talking about link-layer network
> attachment...

I like the idea of using two terms. It may make DNA more clear. I rephrase 
my thoughts with them in below. 

'Datalink Attachment' occurs when an interface has made link-layer 
connection to a new link. 'Network Attachment' occurs when an interface has 
valid IP configuration and becomes ready to send and receive IP datagrams. 

When Datalink Attachment occurs, though link-layer connection is established, 
Network Attachment may or may not be made.  

Hence, the node has to detect its Network Attachment, whether it has valid 
IP layer configuration or not. And if not, it has to gather the necessary 
information to attach to a new IP subnet. Which is generally getting a right RA.  

>> Hence, the node has to detect whether it has IP layer connection or not. And
>> if not, it has to gather the necessary information to set up a new IP layer 
>> connection to a new IP subent. Which is generally getting a right RA.  
>
> I agree generally that this is the goal, though I get very
> wary about providing the wrong impression when people start
> talking about 'IP Connection'.
>
> It's a Connectionless medium.

I see. What I mean by IP connection is like this. 

A node has an IP Connection if it can send and receive IP packets with 
any other node in Internet. 

But if the term connection gives the wrong impression, we'd better find 
a better phrase. 

>> Hence I think, DNA (Detecting Network Attachment) consists of 
>> 1) get a hint of link layer change
>
> This may come because of Datalink Attachment or otherwise...
>
>> 2) check it has IP connection
>>
>> 3) gather necessary information for new IP configuration, if its current IP 
>>     connection is severed. 
>> 
>> The above is my basic thought but it needs polishing. Any comments? 
>
> I basically believe that this is what we're talking about with my
> previous caveats about IP connections.

I am glad that we have mutual understanding. 

> I'm not sure that we need to put all that detail (about datalinks)
> into the charter though.
>
> It would definitely have a place in the terminology document, and
> problem statement(s).

It doesn't have to be included in the charter. I presented it as a common 
base for further work, to make matters clear to speed up DNA work.