1738   GOOSE PDU cannot require unique source MAC address

Created: 17 Nov 2020

Status: Editorial

Part: Part 8-1 (2020; Edition 2.1)

Links:

Page: 173

Clause: C.2.1

Paragraph: 1

Issue

c.2.1 states for GOOSE PDU-

A unique ISO/IEC 8802-3 source address
shall be used.

This is not possible. The src MAC is generally a function of the ethernet PHY...

This is an editorial error that has existed since Ed1.

Perhaps this was meant to be unique per publisher device?

Proposal

Remove this sentence:

A unique ISO/IEC 8802-3 source address
shall be used.

Discussion Created Status
Approve Editorial 06 Dec 21 Editorial
In clause C.2.1 remove sentence "A unique ISO/IEC 8802-3 source address shall be used." 27 Nov 20 Approval (Editoral)
The terms "physical" and "logical" MAC address were coined by Digital Equipment for the PDP-11 which came with the first Ethernet cards.
"Logical" refered to the logical data link, i.e. layer 2. It is wrong to call an IP address a logical address, it is a network address.
A bridge has one MAC address which is used to address it (and ARP'ed), but each port has a port MAC address that it uses, for instance in LLDP.
To avoid confusion, we could use physical for the address that can be overwritten and hardware MAC for the "burnt-in" address.
23 Nov 20 Triage

 

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