[802.3_SPMD] Comment #79 proposed text

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[802.3_SPMD] Comment #79 proposed text - D-PLCA text

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Subject: [802.3_SPMD] Comment #79 proposed text - D-PLCA text

From: Tim Baggett <000015f075877453-dmarc-request@xxxxxxxxxxxxxxxxx>

Date: Mon, 10 Mar 2025 00:59:03 +0000

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Reply-to: Tim.Baggett@xxxxxxxxxxxxx

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Thread-topic: Comment #79 proposed text - D-PLCA text

Hi All,

Here and attached is a PDF of some text changes I am proposing for the D-PLCA aging algorithm.

Before the last sentence of the paragraph, P62 L22, add at the following text:

Soft claims are removed from the claim table, txop_claim_table, if they are older than soft_aging_cycles. Similarly, stale hard claims are removed every hard_aging_cycles.

As a result, the full paragraph on P62 L18-24 reads as follows, with bold indicating added text:

D-PLCA keeps track of claimed transmit opportunities, distinguishing between HARD claims (with COMMIT requests) and SOFT claims (without explicit COMMITs). The aging algorithm assigns two different aging times for HARD and SOFT claims to avoid the case where non PLCA-enabled nodes may prevent D-PLCA from converging. The variables hard_aging_cycles and soft_aging_cycles can be configured to optimize convergence time and stability over time in different situations. Soft claims are removed from the claim table, txop_claim_table, if they are older than soft_aging_cycles. Similarly, stale hard claims are removed every hard_aging_cycles. The value of hard_aging_cycles should be sufficiently greater than the value of soft_aging_cycles to maintain stability of the D-PLCA process as well as interoperability with statically configured PLCA nodes.

Regards,

Tim Baggett

Technical Staff Engineer - Applications

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Microchip Technology, Inc.

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Tim.Baggett@xxxxxxxxxxxxx www.microchip.com

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Attachment: tbaggett_D2p1_comment79_dplca_aging_text_v1.pdf
Description: tbaggett_D2p1_comment79_dplca_aging_text_v1.pdf