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[802.3_4PPOE] Type 4 PD



The definition of type 4 is:

1.4.418ac Type 4 PD: A PD that requests Class 7 or Class 8 during Physical Layer classification, implements Multiple-Event classification, is capable of Data Link Layer classification, and accepts power on both Modes simultaneously. (See IEEE 802.3, Clause 145).

That definition doesn't include Dual signature PDs because the Physical Layer classification is limited to Class 5. 

REMEDY : Changing the definition to:
1.4.418ac Type 4 PD: A PD that requests Class 5 or higher during Physical Layer classification, implementsMultiple-Event classification, is capable of Data Link Layer classification, and accepts power on both Modes simultaneously. (See IEEE 802.3, Clause 145).

Proposed remedy is an extention of Type 4 PD, limited to Class 5 and Class 6 single signature only if PD is capable of Data Link Layer classification.

Comments?

I check if there are limits related to the Type and not to the Class value.

Thanks
Regards
Andrea