[DNA-BOF] Re: [mobile-ip] Announce: BoF Proposal: Detecting Network Attachment

[JinHyeock Choi <athene@sait.samsung.co.kr>]

Hi

Thanks for nice work. BoF description seems reasonable to me. 

Kindly finds my in line comments.

> Detecting Network Attachment (DNA) Proposed BoF Description:

The notion of 'Detecting Network Attachment' is not clear to me. 
What is the difference with 'Movement Detection'? 
 
> Network Attachment occurs when a host arrives on a new
> IP subnet.  When attaching to a network, a host either
> already has a valid configuration for this subnet or
> must configure addresses.  A host determines whether
> it requires additional configuration by Detecting Network
> Attachment.
> 
> When a host has existing upper layer protocols sessions,
> it is important to receive a timely indication that
> attachment has occurred.  This may be the case if a host
> is connected intermittently, is moving or has urgent data
> to transmit upon attachment to a link.
> 
> For these nodes, it is also important detect if an acquired
> link is new, or has already been visited. This information
> may be used to distinguish between events where
> configuration must be initiated, or a host already has
> valid configuration.
>
> This meeting hopes to providing a forum for those
> interested in developing generic attachment detection
> technologies for IPv4 and IPv6.
> 
> The BOF aims to:
> 
> * Describe existing issues encountered in DHC, ZEROCONF
>    and Mobileip WGs, which could benefit from work on
>    detecting network attachment.
> 
> * Define the problem scope, and environments where network
>    attachment detection is desirable.
> 
> * Determine if sufficient interest exists to form a
>    Working Group on this topic.
> 
> * Reach consensus on the area of work for a potential WG,
>    including which problems are outside scope.

I am not familiar with the issues from DHC, ZEROCONF. But with 
respect to mobileip, I wish that the work area includes the following. 
(I use the term MD because the notion DNA is still unclear to me.)

1. The issues and problems of MD 
- The definition (and tasks) of MD 
- The effect of wireless environment on MD
- The inconsistency of RA information
- The delay from (NUD like) reachability test and its effects on performance
 
2. Basic MD scheme
- a default MD scheme on which vendors can safely fall back.
- Eager Cell Switching with L2 trigger 
- NS/ NA (RS/ RA) exchange 

3. Optimized MD schemes
- Optimized MD scheme which can support seamless handoff
- Quick Router Discovery: FastRA, FRD
- LinkID
- RA optimized for MD

Another thanks for good work.  I am glad that MD BoF is moving 
forward. 

Best regards

JinHyeock