Re: [DNA-BOF] BoF Last Call on DNA WG Charter.

[Alper Yegin <alper@docomolabs-usa.com>]

>> If a network ID is available, the host can quickly determine if it has
>> changed subnet. If a network ID is not available, it has to play safe and
>> perform network-layer discovery to detect if it needs to reconfigure.
> 
> So far the proposals that I've seen for transmission of the "network Id"
> in L2 are really no better than "weak hints".  That is, they can
> conceivably be wrong.  For example, a VLANID advertised in a Beacon or
> Probe Response will not be valid if the VLANID is dynamically assigned as
> proposed in [RFC3580].

An IEEE 802.11 clarification question:
Are you talking about an explicit "VLANID" field present in these frames, or
just the fact that SSID is set to VLANID (at a logical level)?

> The dynamic VLANID assignment occurs after
> authentication (since it is sent in the AAA Accept), and possibly after
> association, which is considered a "link up" event in some
> implementations.  This means that VLANID can't always reliably be
> communicated in the Association/Reassociation exchange either.

Alper