The Network Times
Monday, 2 March 2026

Packet trimming Deep Dive - Part IV

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Receive Network Processing Unit (Rx NPU) Figure 9-4 illustrates a simplified receive-side processing pipeline, starting from the moment a Pa...
Friday, 27 February 2026

Packet Trimming Deep Dive - Part III

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Virtual Output Queue (VOQ) The Silicon One VOQ Architecture Instead of using dedicated deep interface buffers for packet queuing, Cisco Sili...
Wednesday, 25 February 2026

Packet Trimming Deep Dive - Part II

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Receive Interface Group (Rx IFG) Ingress Pre-Processing and Integrity The Receive Interface Group (Rx IFG) is the ingress pre-processing sta...
Friday, 20 February 2026

Packet Trimming Deep Dive - Part I

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 Introduction The previous chapter introduced the Ultra Ethernet (UE) Transport Layer and its endpoint-centric congestion control mechanisms...
Thursday, 5 February 2026

Ultra Ethernet: Receiver Credit-based Congestion Control (RCCC)

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 Introduction Receiver Credit-Based Congestion Control (RCCC) is a cornerstone of the Ultra Ethernet transport architecture, specifically de...
2 comments:
Saturday, 31 January 2026

Ultra Ethernet: NSCC Destination Flow Control

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Figure 6-14 depicts a demonstrative event where Rank 4 receives seven simultaneous flows (1). As these flows are processed by their respecti...
Thursday, 29 January 2026

Ultra Ethernet: Inflight Bytes and CWND Adjustment

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Inflight Packet Adjustment Figure 6-12 depicts the ACK_CC header structure and fields. When NSCC is enabled in the UET node, the PDS must us...
Tuesday, 27 January 2026

Ultra Ethernet: Network-Signaled Congestion Control (NSCC) - Overview

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Network-Signaled Congestion Control (NSCC) The Network-Signaled Congestion Control (NSCC) algorithm operates on the principle that the netwo...
Tuesday, 13 January 2026

Ultra Ethernet: Congestion Control Context

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 Ultra Ethernet Transport (UET) uses a vendor-neutral, sender-specific congestion window–based congestion control mechanism together with fl...
Tuesday, 6 January 2026

UET Congestion Management: CCC Base RTT

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Calculating Base RTT [Edit: January 7 2026, RTT role in CWND adjustment process] As described in the previous section, the Bandwidth-Delay P...
1 comment:
Saturday, 3 January 2026

UET Congestion Management: Congestion Control Context

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Congestion Control Context Updated 5.1.2026: Added CWND computation example into figure. Added CWND cmputaiton into text. Updated 13.1.2026:...
Monday, 29 December 2025

UET Congestion Management: Introduction

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 Introduction Figure 6-1 depicts a simple scale-out backend network for an AI data center. The topology follows a modular design, allowing t...
2 comments:
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