Routing MAC Address Management for Expanding Switch Interfaces

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Solution Overview

Problem

The number of routing interfaces in existing layer 3 switch devices is limited by hardware resources, failing to meet user configuration requirements due to the limited capacity of the routing MAC address management table.

Innovation Solution

A method and apparatus that utilize an access control list (ACL) module to manage routing MAC addresses, allowing for the addition of chip routing MAC address management tables and interfaces when hardware resources are insufficient, expanding the number of supported interfaces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the traditional one-to-one management method of routing interfaces and routing MAC address management table is used, then the routing interface management is simple, but the number of routing interfaces is limited by hardware resources

Engineering Contradiction:
Improvenumber of routing interfacesVSAvoidmanagement complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies universality by enabling the routing MAC address management table to serve multiple routing interfaces simultaneously. Instead of dedicating one table to one interface, the same hardware table resources are shared across multiple interfaces through software management, allowing the system to support more routing interfaces than the hardware table size would traditionally permit.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent introduces software as an intermediary layer between the routing interfaces and the hardware routing MAC address management table. This software layer manages and allocates table entries dynamically, acting as a mediator that allows multiple interfaces to access limited hardware resources without requiring a one-to-one correspondence, thus expanding interface capacity beyond hardware limitations.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If the routing MAC address management table capacity is increased to support more routing interfaces, then the user configuration requirements are met, but the hardware resources are exhausted

Engineering Contradiction:
Improvenumber of routing interfacesVSAvoidhardware table entry resources
Core Design Contradiction:
Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent creates a software-based copy or virtual representation of the routing MAC address management table that can be replicated and allocated to multiple interfaces. Instead of increasing physical hardware table size, the system uses software structures that can be instantiated multiple times, allowing logical expansion of table capacity without consuming additional hardware resources for each interface.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The patent transitions from a single-dimension hardware table to a multi-dimensional management structure by introducing software layers. This adds temporal and logical dimensions to table management, allowing the same hardware resources to be allocated to multiple interfaces at different times or under different logical contexts, effectively expanding capacity without increasing physical resource quantity.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS20260113325A1Routing mac address management method and apparatus, electronic device, and storage medium
Publication Date: 2026.04.23 INSPUR SUZHOU INTELLIGENT TECH CO LTD
  • US20260113325A1 patent drawing
  • US20260113325A1 patent drawing
  • US20260113325A1 patent drawing

AI summary

The present disclosure discloses a method for managing routing MAC addresses. The method is applied to a switch, the switch includes a routing MAC address management table, and the routing MAC address management table includes hardware table entry resources, the switch is provided with an ACL module, and the method includes: determining whether the hardware table entry resources of the routing MAC address management table meet a preset number of routing interfaces in response to an operation of configuring the routing interfaces; adding a chip routing MAC address management table in response to the hardware table entry resources of the routing MAC address management table meeting the preset number of routing interfaces; and adding one or more routing interfaces according to the ACL module in response to the hardware table entry resources of the routing MAC address management table not meeting the preset number of routing interfaces.