Hi Alex,

In general, I think if you consider the term "EUI-64 address" as shorthand for "IEEE EUI-64-based address" (or even just "IEEE address") and scope the context of the term to link layer addresses then it makes sense.

Further comments below, bracketed by <RCC></RCC>.

Robert

Robert Cragie (Pacific Gas & Electric)

Gridmerge Ltd.
89 Greenfield Crescent,
Wakefield, WF4 4WA, UK
+44 (0) 1924 910888
http://www.gridmerge.com <http://www.gridmerge.com/>



Alexandru Petrescu wrote:
6LoWPANners,

I believe I have another complain about the RFC 4944.  Yes, we are not
modifying RFC4944 neither here nor now.

However, I have been referred to it several times while discussing the
current WG items.  For example, in private and in public I have been
told that RFC 4944 says "EUI-64 address".  Or, I am used to EUI-64 being
not an address but an identifier.

RFC 2464 mentions it as an "EUI-64 identifier", or "Interface
Identifier".  It never calls it an "EUI-64 address".
<RCC>Strictly speaking, an EUI-64 identifier is an identifier. In IEEE 802.15.4 it is also used as a link-layer address, therefore has a dual purpose for that type of link layer</RCC>

RFC 4944 mentions it as an "EUI-64 address" in some places:

rfc4944:
All 802.15.4 devices have an IEEE EUI-64 address, but 16-bit short addresses (Section 3 and Section 12) are also possible.
<RCC>So this is almost correct - perhaps "IEEE EUI-64-based address" might be more accurate. But it is always used in the context of a link layer address.</RCC>
[...]
Length: This is the length of this option (including the type and length fields) in units of 8 octets. The value of this field is 2 if
using EUI-64 addresses, or 1 if using 16-bit short addresses.

It's very difficult to understand it ok.
<RCC>Again, if you take this as "IEEE EUI-64-based address" then it makes sense to me.</RCC>

I am used for an address to be unique, otherwise it's not very good.
But an identifier is not necessarily unique, it's good, and it has that
g bit to distinguish it being unique or not.

Now that you read up to here, also understand my complain about RFC 4944
reading "short address".  Instead, I would like it to say "short MAC
address" throughout.  This would have saved me much misunderstandings in
many discussions in 6LoWPAN and RoLL.
<RCC>Again, I think this is only used in the context of link layer address so I am not sure if the distinction is needed.</RCC>

Thank you,

Alex


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