Re: [802.3af] Minor IEEE802.3af D4 issues
You are right in your assertion that NID should be defined. It seemed
obvious to us at the time.
We introduced the term to describe any device (presumably compliant) that
interfaces to the network.
We did this because, as the document evolved, not all of the interfaces
were MDIs and we needed a term for devices. It is not specific to a
It is any device that contains a PHY (i.e. DTE and/or repeater), a PSE, a
PD or any combination thereof including multiple instances.
I hope this helps.
At 05:49 PM 4/23/2003 +0100, Charles Palmer wrote:
Sorry to trouble you
with a trivial issue - just trying to help:
Paragraph 13.4.1 introduces the term
"network interface device (NID)" - I assume from the context
that an NID is what we might commonly refer to as a hub, but I can see no
formal definition of NID in the definitions section (1.4) of the 802.3af
spec or the full 802.3 spec, nor does it feature in the diagrams of
sections 33.1 or 33.2. Is NID worthy of a formal definition?
On closer reading of 18.104.22.168.1 - this refers
to "Equipment [presumably NIDs?] containing multiple instances of
PSE and/or PD..." - I am trying unsuccessfully to envisage a piece
of equipment with multiple PDs, or a mixture of PSEs and PDs, but if such
equipment could exist, and if it is an NID, then I am more unclear about
what the term "NID" actually covers.
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