Master Sub-Logical Interface Packet Transmission
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Solution Overview
Problem
Network devices experience significant transmission pressure due to the need to flood advertisement packets across multiple logical interfaces, which complicates resource isolation and network management in virtualized environments.
Innovation Solution
Implementing a packet transmission method where advertisement packets are transmitted on a master logical interface, reducing the number of adjacencies and packets required, thereby alleviating transmission pressure by configuring master and sub-logical interfaces to manage virtual network identifiers and IP information efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If advertisement packets are flooded on multiple logical interfaces to ensure resource isolation, then network reliability and resource isolation are improved, but transmission pressure and device complexity increase
Solution Approach 1:
The patent segments the network interface structure into master logical interfaces and sub-logical interfaces. Each physical interface is divided into multiple logical interfaces, and each logical interface is further divided into multiple sub-logical interfaces. Advertisement packets are flooded only on master logical interfaces, while sub-logical interfaces inherit the adjacency relationships. This segmentation reduces the number of interfaces requiring advertisement packet processing while maintaining resource isolation through the hierarchical structure.
2Adaptability or versatility
If multiple logical interfaces are created for resource isolation, then virtual network independence is improved, but the quantity of adjacencies and advertisement packets increases
Solution Approach 1:
The patent extracts the advertisement packet flooding function from sub-logical interfaces and concentrates it on master logical interfaces. Sub-logical interfaces do not independently flood advertisement packets but instead inherit adjacency relationships from their associated master logical interface. This extraction eliminates redundant advertisement packets while maintaining the independence of virtual networks through the master-sub logical interface association.
3Measurement precision
If each logical interface independently processes advertisement packets, then network topology accuracy is improved, but transmission pressure on network devices increases
Solution Approach 1:
The patent merges the advertisement packet processing function of multiple sub-logical interfaces into a single master logical interface. The master logical interface collects adjacency information from all associated sub-logical interfaces and floods a consolidated advertisement packet. This merging reduces the total number of advertisement packets while maintaining accurate network topology information through the aggregation of sub-logical interface data.
Data Source
AI summary
A packet transmission method, implemented by a first network device includes determining a first master logical interface, where the first master logical interface is associated with a first virtual network identifier and a first sub-logical interface, and the first sub-logical interface is associated with a second virtual network identifier, and receiving an advertisement packet from a second network device through the first master logical interface, where the advertisement packet includes the first virtual network identifier, first internet protocol (IP) information associated with the first virtual network identifier, the second virtual network identifier, and second IP information associated with the second virtual network identifier.