[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [DNA-BOF] Draft charter now online

Dear Greg

Thanks for nice job. I am glad DNA is progressing to a real WG. 

Kindly find my on line comments for Attachment Detection. 


> Proposed Detecting network Attachment (DNA)
> Working Group Description.
> 
> Overview
> 
> Network Attachment occurs when an interface
> becomes ready to send and receive IP datagrams.

What do you mean by 'interface becomes ready'?  I think that Network 
Attachment occurs when a node has completed a link layer connection, 
whether Ethernet or WLAN. We'd better clarify this. 

> This process may occur when link-layer
> authentication has completed, a host comes back
> into range of a wireless cell, or a cable is plugged in.
> 
> Attachment Detection
> 
> While a host's network layer may initially be unaware
> of the occurrence of attachment, it may already have
> valid IP configuration for the link instance where it
> is attached. 

Would you elaborate more about 'valid IP configuration'. What I can think 
of are 'IP address', 'default router information' and 'on-link prefix information' 

> A host determines that attachment has
> occurred, as well as whether it needs additional
> configuration by Detecting Network Attachment (DNA).

> Rapid attachment detection is required when a host
> has existing upper layer protocols sessions. This may
> be the case if a host is connected intermittently, is
> a mobile host or has urgent data to transmit upon
> attachment to a link.
> 
> For these nodes, it is also important detect if an
> acquired subnet or 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. For
> example, there may be a requirement to to undertake
> address configuration, network-layer authentication
> and multicast group managment signalling, before
> receiving packets from off-link.
 
I think that the brief description of group goal will be nice. 

Best regards

JinHyeock