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

[Nicolas Montavont <montavont@clarinet.u-strasbg.fr>]

Hi Bernard,

Bernard Aboba wrote:

  >>One is the physical link ID. This can be based on the access point ID in
  >>802.11, SGSN ID in GPRS, RAN ID in 3GPP2.
  >>
  >>
  >
  >802.11 does not have an access point ID.  It only has the BSSID but this
  >is not the same thing.  The difference become apparent when encountering
  >APs with multiple BSSIDs.  Many different designs now exhibit this -- 
such
  >as "dumb AP, smart switch" designs,  physical APs supporting "virtual AP"
  >capabilities, etc
  >
Do you have any pointer on how multiple BSSIDs are calculated on a
single AP ?

  >.
  >
  >One of the consequences  of this is that a host can change points of
  >attachment and not know that it is connected to the same physical AP.
  >
But is this really a problem ?
If the MN changes point of attachment, it should generate a Link Up. The
fact that the new point of attachment is the same physical AP or not is
not important to determine if it is the same access network, since the
two point of attachments may use different IPv6 prefixes.

Nicolas