-----Original Message-----
From: ext Peretz Feder [mailto:pfeder@lucent.com]
Sent: Friday, September 30, 2005 11:16
To: Faccin Stefano (Nokia-NRC/Dallas)
Cc: STDS-802-21@listserv.ieee.org
Subject: Re: [802.21] [DNA] Prefix information for link identification
in DNA
On 9/30/2005 9:14 AM, stefano.faccin@nokia.com wrote:
Peretz, I thought we had decided to get away from the
thinking that MIH is "below" L3 and "above" L2, since this is
anyway incorrect.
This is not what Figure 1 shows in P802-21-D00-02.
I still think we hve both L2 PoAs and L3 PoAs, depending on
the specific scenarios. Limiting the PoA to be at L2 is ...
well, too limiting. For 802.21 @ L3, the PoA is of course @
L3 snce the very first location where the <MIHF in the UE can
send e.g. an IS request is @ or beyond the subnet where the
UE gets its own IP address.
Stefano
________________________________
From: ext Peretz Feder [mailto:pfeder@LUCENT.COM]
Sent: Fri 9/30/2005 7:42 AM
To: STDS-802-21@listserv.ieee.org
Subject: Re: [802.21] [DNA] Prefix information for link
identification in DNA
Within the discussion of MIH services, which is below layer
3, I would assume that MIH centric PoA should be below layer 3, no?
This is the 802.21 reflector, correct?
Once PoA L2 (or L2.5) is established between MIH on the UE
and MIH in the 802.21 compliant PoA and MIH services provided
thereof, we can discuss higher layers PoAs in relation to
other relevant MIH elements that require L3 transport services.
Peretz Feder
On 9/30/2005 4:09 AM, Mike Moreton wrote:
To extend (I think!) Stefano's point, before
determining what the PoA is, you have first to be very clear
about what you're attaching. Just saying "the terminal"
makes no sense, because different layers in the terminal's
protocol stack attach to different places in the network.
For example, the PHY layer attaches to the AP, but the
TCP layer attaches to the destination host.
Mike.
-----Original Message-----
From: Stefano M. Faccin
[mailto:stefano.faccin@NOKIA.COM]
Sent: Friday, September 30, 2005 1:08 AM
To: STDS-802-21@listserv.ieee.org
Subject: Re: [802.21] [DNA] Prefix information for link
identification in DNA
Yoshihiro,
I'm not sure why should restrict the term PoA
to have only a
L2 meaning as you suggest below. I think we should
distinguish clearly between L2 PoA and L3 PoA.
For me, the L3
PoA is where the terminal gets IP conenctivity.
E.g. for GPRS
the L3 PoA is the IP link on which the GGSN is
located. In
L2, PoA is the point where the access-specific
L2 connection
terminates (e.g. an AP in 802.11).
Stefano