Re: [802.21] [DNA] Prefix information for link identification in DNA
You might try differentiating:
- L2 as Point-of-Attachment (PoA), since it is the
MAC peer-to-peer connection between a subcriber device and a BS, AP,
etc...connecting the subscriber device to the network. Should be characterized
as the first point of attachment of the subcriber device to the
network. The subcriber device may be any device or system requiring connection
to the network;
- and L3 as Point-of-Interface (PoI), since it is
the interface point on the BS, AP, etc...servicing the logical transport port
of the subscriber device.
Thanks,
Phillip Barber
Huawei
----- Original Message -----
Sent: Friday, September 30, 2005 8:14
AM
Subject: RE: [802.21] [DNA] Prefix information for
link identification in DNA
> 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. 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
>
>
>
>
>