Integrated Traffic Profile for Congestion and Packet Drop
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Solution Overview
Problem
Existing communication networks face challenges in effectively managing congestion and packet drops, as drop and congestion profiles often conflict, leading to inefficient resource usage and increased congestion levels, which hinder end-host notification and contribute to network degradation.
Innovation Solution
An integrated traffic profile system that combines drop and congestion profiles to determine packet acceptance and marking, allowing for a gradual transition from acceptance to dropping, enabling the communication of congestion information to end-hosts and reducing unnecessary packet discards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate drop and congestion profiles are used, then packet drop can be controlled, but congestion information cannot be effectively communicated to end-hosts
Solution Approach 1:
The patent combines separate drop profiles and congestion profiles into a single integrated traffic profile. This integration allows the system to simultaneously control packet dropping and communicate congestion information to end-hosts through a unified mechanism, resolving the conflict between the two separate profiles and enabling both functions to work together effectively.
Solution Approach 2:
The integrated traffic profile serves multiple functions: it acts as both a drop profile and a congestion profile simultaneously. By making the traffic profile universal, the system can perform both packet selection for dropping and congestion indication in a single pass, eliminating the need for separate profiles and their inherent conflicts.
2Reliability
If strict drop profile is applied, then queue utilization is controlled, but network resource usage increases due to retransmissions
Solution Approach 1:
The integrated traffic profile provides feedback to end-hosts about congestion conditions through marking packets. This feedback mechanism allows senders to adjust their transmission rates proactively before packet drops occur, reducing the need for retransmissions and optimizing network resource usage while maintaining queue congestion control.
Solution Approach 2:
The system performs preliminary congestion indication by marking packets before they are dropped. This preliminary action alerts end-hosts to congestion conditions in advance, allowing them to take corrective action (such as reducing transmission rate) before packets are lost, thereby preventing the need for energy-consuming retransmissions.
3Loss of information
If congestion profile marks packets, then end-host notification is enabled, but packet drops increase when profiles conflict
Solution Approach 1:
By merging the congestion profile and drop profile into an integrated traffic profile, the system eliminates the conflict between the two. The unified profile ensures that packets marked for congestion indication are not subsequently dropped by a separate drop profile, as both functions are coordinated within the same profile structure.
Solution Approach 2:
The integrated traffic profile acts as an intermediary that coordinates the functions of both congestion marking and packet dropping. Instead of having two independent profiles that may conflict, the integrated profile mediates between these functions, ensuring consistent decision-making about packet handling based on current queue conditions.
4Adaptability or versatility
If separate profiles are used, then flexible control is achieved, but system complexity increases
Solution Approach 1:
The patent merges multiple separate profiles into a single integrated traffic profile structure. This consolidation reduces the complexity of managing multiple independent profiles while maintaining the flexibility and adaptability of traffic control, as the integrated profile can still implement both drop and congestion functions with coordinated parameters.
Data Source
AI summary
A system for facilitating an integrated traffic profile for indicating congestion and packet drop is provided. During operation, the system can determine a first traffic profile indicating whether to drop a packet based on the utilization of a queue. The packets from the queue can be forwarded via an egress port reachable via a fabric. The system can also determine a second traffic profile indicating whether to indicate congestion in the packet based on the utilization. The system can then determine a third traffic profile by combining the first and second traffic profiles. The third traffic profile can indicate acceptance at the queue for a subset of packets being selected for dropping based on the utilization. Subsequently, the system can, if the packet is selected for dropping, determine whether to accept the packet at the queue and set a congestion indicator in the packet based on the third traffic profile.