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Dave, Auto-negotiation of FEC is already defined
in Clause 73 so there is no need make additional revisions for FEC. I was
making an assumption that only two new PHYs would be added for 802.3bj and had
not considered a third PHY. If additional PHYs are adopted they would need to
be added to the proposed text for AN and their priority specified. Arthur. From: Chalupsky, David
[mailto:david.chalupsky@xxxxxxxxx] Thanks
for the proposal, Arthur. This
is a great start. There are a couple dependencies upon baselines in other areas
that could affect this. -
FEC - if we
have an optional FEC how does that affect AN? -
Multi signaling
schemes: if a PAM4 baseline is adopted in addition to NRZ we will need more
fields and naming to distinguish them. We would also need to discuss the
priority. Process-wise, should we leave it to PAM-4 supported to propose
the AN solution as part of their baseline? Thanks, Dave
From: Arthur Marris
[mailto:arthurm@xxxxxxxxxxx] Folks,
Below follows a draft baseline proposal for 802.3bj auto-negotiation. Please
let me know if: 1)
You
wish to be listed as a supporter 2)
You
wish to be involved in consensus building discussions 3)
You
have any comments on the proposal Arthur
Marris (arthurm at cadence dot com) 802.3bj
Baseline Proposal for Auto-Negotiation Assumptions: ·
Implementation
of Auto-Negotiation will be mandatory for 100GBASE-KR4 and 100GBASE-CR4 ·
802.3bj
EEE (Energy Efficient Ethernet) will make use of AN next pages just like
802.3az ·
802.3bj
will take the same approach as 802.3ba for Auto-Negotiation Proposed
revisions to IEEE 802.3-2012: Clause
30: Change
30.6.1.1.5 aAutoNegLocalTechnologyAbility attribute to insert
100GBASE-KR4 and 100GBASE-CR4 after 100GBASE-CR10. Clause
45: Change
45.2.7.12 Backplane Ethernet, BASE-R copper status (Register 7.48) register to
include 100GBASE-KR4 and 100GBASE-CR4. Insert 100GBASE-KR4 and 100GBASE-CR4
bits into Table 45–172 and 45.2.7.12.2 Negotiated Port Type. Change 45.2.7.13 EEE
advertisement (Register 7.60) to include 100GBASE-KR4 and 100GBASE-CR4. Insert
100GBASE-KR4 and 100GBASE-CR4 bits into Table 45–173 and Table
45–174. Insert subclauses for the bit definitions as necessary. Clause 73: Change note at beginning
of Clause 73 to read “Note that although the Auto-Negotiation defined in
this clause was originally intended for use with Backplane Ethernet PHYs, it is
also specified for use with 40GBASE-CR4, 100GBASE-CR10 and 100GBASE-CR4
PHYs.” Change last sentence in
third paragraph of 73.3 to read “Technology-Dependent PHYs include
1000BASE-KX, 10GBASE-KX4, 10GBASE-KR, 40GBASE-KR4, 40GBASE-CR4, 100GBASE-CR10,
100GBASE-KR4 and 100GBASE-CR4.” Change
Table 73-4 Technology Ability Field encoding to insert A6 for 100GBASE-KR4 and
A7 for 100GBASE-CR4. Change third paragraph in
73.6.4 to read “40GBASE-CR4 and 40GBASE-KR4 shall not be advertised
simultaneously and likewise 100GBASE-CR4 and 100GBASE-KR4 as their physical
interfaces are different. Change last sentence in
73.7 Receive function requirements to read “The receive function
incorporates a receive switch to control connection to the 1000BASE-KX,
10GBASE-KX4, or 10GBASE-KR, 40GBASE-KR4, 40GBASE-CR4, 100GBASE-CR10,
100GBASE-KR4 or 100GBASE-CR4 PHYs.” Change 73.7.1 DME page
reception to read “To be able to detect the DME bits, the receiver should
have the capability to receive DME signals sent with the electrical
specifications of the PHY (1000BASE-KX, 10GBASE-KX4, 10GBASE-KR, 40GBASE-KR4,
40GBASE-CR4, 100GBASE-CR10, 100GBASE-KR4 or 100GBASE-CR4). The DME transmit
signal level and receive sensitivity are specified in 73.5.1.1.” Change last sentence of
73.7.2 Receive Switch function to read “During Auto-Negotiation, the
Receive Switch function shall connect the DME page receiver controlled by the
Receive state diagram to the MDI and the Receive Switch function shall also
connect the 1000BASE-KX, 10GBASE-KX4, 10GBASE-KR, 40GBASE-KR4, 40GBASE-CR4,
100GBASE-CR10, 100GBASE-KR4 and 100GBASE-CR4 PMA receivers to the MDI if the
PMAs are present.” Change Table
73–5—Priority Resolution to insert 100GBASE-CR4 at priority 1 and
100GBASE-KR4 at priority 2 and move the existing entries in the table down
appropriately. Insert appropriate
variable for 100GBASE-KR4 and 100GBASE-CR4 into 73.10.1 State diagram variables Clause
80: Change the last sentence
of 80.2.6 Auto-Negotiation to read “Clause 73 Auto-Negotiation is used by
the 40 Gb/s and 100 Gb/s backplane PHYs (40GBASE-KR4 and 100GBASE-KR4) and the
40 Gb/s and 100 Gb/s copper PHYs (40GBASE-CR4, 100GBASE-CR10 and
100GBASE-CR4).” Clause
82: Change
the first sentence of 82.6 Auto-Negotiation to read “The following
requirements apply to a PCS used with a 40GBASE-KR4 PMD, 40GBASE-CR4 PMD,
100GBASE-CR10, 100GBASE-KR4 or 100GBASE-CR4 PMD where support for the Auto-Negotiation
process defined in Clause 73 is mandatory.” |