RE: [802.21] [DNA] Prefix information for link identification in DNA
Peretz,
It simply sounds wrong to me - if you say the "layer 3 link" is up, I expect layer 3 to be working. If it's still waiting for an address assignment then layer 3 isn't working in my books, because you can't do anything useful with it.
So I'd have (using an 802.11 example):
The two STAs are in range of each other: means layer 1 link up
802.11 authentication and association completed: means layer 2 link up
IP address allocation/MIP stuff/whatever else you need to do: means layer 3 link up
TCP connection established: means layer 4 link up.
[UDP doesn't really have any concept of link, so for UDP the layer 4 link comes up the moment the layer 3 link does]
That's just what sounds right to me...
Mike.
-----Original Message-----
From: Peretz Feder [mailto:pfeder@LUCENT.COM]
Sent: Monday, October 03, 2005 1:28 PM
To: STDS-802-21@listserv.ieee.org
Subject: Re: [802.21] [DNA] Prefix information for link identification in DNA
Mike:
"If you took your definitions as they are, then the layer 3 link coming up would not allow TCP or UDP to flow - you'd still have to wait for IP address assignment - and that sounds wrong to me."
Wrong from the point of exchanging MIH events between potential target and UE?
What if the target indicating via PHY/MAC/MIH that is is a good candidate? Would you suggest to attach to it first and then find out its link attributes?
Peretz