IEEE 802.3 Interpretations

Occasionally questions may arise regarding the meaning of portions of standards as they relate to specific applications. When the need for interpretations is brought to the attention of IEEE, the Institute will initiate action to prepare appropriate responses. Since IEEE Standards represent a consensus of all concerned interests, it is important to ensure that any interpretation has also received the concurrence of a balance of interests. For this reason, IEEE and the members of its societies and Standards Coordinating Committees are not able to provide an instant response to interpretation requests except in those cases where the matter has previously received formal consideration.

The IEEE Standards Library web site provides more information on requesting an interpretation.

Interpretations provided by IEEE P802.3 since November 1996 are available below:-

Interpretaion
Number		 Date Status Relevant
Subclauses		 Topic
2-11/06 08-Nov-06 Approved 55.8.2.2 10GBASE-T MDI impedance balance
1-11/06 04-Oct-06 Withdrawn 36 1000BASE-X IFG encoding rules
3-07/06 22-Jun-06 Approved Figure 33-6 and Table 33-5 PD classification
2-07/06 29-Mar-06 Approved Table 58-4 and 58-6 100BASE-LX10 and 100BASE-BX10 receive sensitivity
1-07/06 13-Mar-06 Approved 48 10GBASE-X Physical Coding Sublayer (PCS)
2-03/06 06-Mar-06 Approved Table 33-5 DTE Power Short circuit requirements
1-03/06 21-Dec-05 Approved 14.3.1.2.2 10BASE-T differential output impedance test method
3-07/05 21-Apr-05 Approved 61.2.2.5 PME Aggregation restrictions
2-07/05 31-Mar-05 Approved 37 and 40.5.1 Auto-Negotiation
1-07/05 29-Mar-05 Approved 33.4.1 DTE Power via MDI Isolation
5-03/05 07-Mar-05 Approved 57.3.2.1 and 57.3.2.1.1 OAM Discovery
4-03/05 15-Feb-05 Approved 8.3.2.1 and 12.10.1 Isolation requirements
3-03/05 09-Feb-05 Approved 33.4.1 Power over Ethernet Isolation requirements
2-03/05 11-Nov-04 Approved 48.2.4.2.2 and 53.1 10GBASE-LX4 skew definition
1-03/05 09-Nov-04 Approved Figure 64-14 Discovery Handshake Message Exchange
5-11/04 13-Oct-04 Approved Figure 64–29 Gate Processing ONU Activation State Diagram
4-11/04 12-Oct-04 Approved 61 Type 10PASS-TS and type 2BASE-TL PCS
3-11/04 14 Sept 04 Approved 4.2.9 Frame Reception
2-11/04 07 Sep 04 Approved 39.3.1 Transmitter electrical specifications
1-11/04 19 Aug 04 Approved 37 1Gb/s Pause resolution
3-07/04 01 Jun 04 Approved 33.4.1 Isolation
2-07/04 11 May 04 Approved 24.3.2.1 Far-End fault
1-07/04 15 Apr 04 Approved Figure 37-6 Auto-Negotiation state diagram
1-03/04 30 Jan 04 Approved 48.2.6.1.4 10GBASE-X check_end function
5-11/03 30 Oct 03 Approved 48.2.6.1.4 10GBASE-X check_end function
4-11/03 28 Oct 03 Approved 14.3.1.1 Isolation requirements
3-11/03 22 Oct 03 Approved 14.3.1.1 Isolation requirements
2-11/03 20 Oct 03 Approved 33.4.1 DTE Power via MDI Isolation
1-11/03 24 Jul 03 Approved 38.6.11 Conformance Test signal at TP3 for receiver testing
2-07/03 01 Jul 03 Approved Table 45-49 XGXS align status register bits
1-07/03 31 Mar 03 Approved Annex 31B Globally assigned multicast address bit order
6-03/03 10 Feb 03 Approved 9 and 27 10Mb/s and 100Mb/s Repeaters
5-03/03 07 Feb 03 Approved 12.10.1 1BASE5 Isolation
4-03/03 15 Jan 03 Approved 40.6.1.1.3 1000BASE-T Test Fixtures
3-03/03 22 Nov 02 Approved 14.3.1.2 Twisted-pair model
2-03/03 15 Nov 02 Approved 37.2.4.2 Pause priority resolution
1-03/03 13 Nov 02 Approved 52.9.10.2 Vertical eye closure penalty
6-11/02 01 Nov 02 Approved 14.3.1 10BASE-T isolation requirements
5-11/02 23 Sep 02 Approved 30C.6 Clause 43 SNMP MIB
4-11/02 05 Sep 02 Approved 43 Link Aggregation Control Protocol
3-11/02 22 Aug 02 Approved 40.4.4 1000BASE-T Auto-crossover
2-11/02 22 Aug 02 Approved Figure 7-6
Figure 24-14		 10Mb/s and 100Mb/s Carrier Detect
1-11/02 07 Aug 02 Approved 37 1000BASE-X Auto-negotiation
4-07/02 19 Jun 02 Approved 4.2.4.2 Maximum Frame Size
3-07/02 23 May 02 Approved 37 Clause 37 Auto-Negotiation
2-07/02 23 May 02 Approved 22.2.2.11 Aperiodic operation of MDC
1-07/02 23 May 02 Approved 40C-2 Autoneg Transmit State diagram add-on for 1000BASE-T
1-11/01 15 Nov 01 Approved Figure 40-9
Figure 40-10a
40.6.1.1.2		 Definition of CEXT and CEXT_Err symbols
Definition of CEXT and IDLE symbols
PCS Receive function and Scrambler generator polynomial
2-11/01 15 Nov 01 Approved 36.2.4.2.2 Figure 36-7b transition from RECEIVE to RX_DATA
1-03/01 15 Mar 01 Approved 28.2.1.2.4
28.2.1.2.4
28 & 32
Auto-Neg Acknowledge bit
Auto-Neg Link Partner Ability and Next Page register
Auto-Neg registers 6 and 8
2-03/01 15 Mar 01 Approved 36.2.4.15 Carrier Extend (/R/)
1-11/00 09 Nov 00 Approved 40.3.1.3.5 Generation of quinary symbols TAn, TBn, TCn, TDn
1-07/98 09 Jul 98 Approved 22.2.4.3.1 Format of the OUI in PHY Identifier register
1-03/98 12 Mar 98 Approved 28.2.3.3 Clause 28 Auto-Negotiation
1-03/97 13 Mar 97 Approved 4.2.3.2.5 CSMA/CD backoff
1-11/96 14 Nov 96 Approved 14.3.1.2.1 10BASE-T Transmit Voltage Template

Note - Interpretations listed above with a status other than Approved are currently under formal consideration by IEEE P802.3 and only the original request is available on this page.

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Last Update: 30 Mar 07

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