Server Management Device Bandwidth Control for Virtual CPE Tunnel Reliability

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Solution Overview

Problem

In scenarios where multiple virtual CPEs are implemented on a server, concentrated tunnel connection requests lead to delayed tunnel establishment, causing increased processing loads and timeouts during events like large-scale power failures.

Innovation Solution

A management apparatus that acquires the server's state and instructs connected CPEs to control communication bandwidth dynamically, prioritizing tunnel authentication processes over packet transfer processes by limiting bandwidth during high loads.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple CPEs simultaneously request tunnel reconnection to vCPE on the same server, then the server processes all tunnel authentication requests, but the processing load increases and tunnel establishment is delayed

Engineering Contradiction:
Improvetunnel establishment reliabilityVSAvoidtunnel establishment time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent changes the parameter of communication band allocation dynamically based on server state. When the server is in a high-load state (multiple simultaneous tunnel authentication requests), the management apparatus reduces the communication band for packet transfer processes while maintaining or increasing bandwidth availability for tunnel authentication processes. This parameter change allows the server to prioritize authentication requests without physical hardware modifications.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent implements dynamic bandwidth control where the communication band allocated to packet transfer processes is adjusted in real-time based on the server's current state. The management apparatus continuously monitors server load and dynamically modifies bandwidth allocation, transitioning from static to dynamic resource management. This enables the system to adapt to varying traffic conditions and prioritize tunnel authentication during high-load periods.

Inventive Principle:
Principle #15Dynamics

2Productivity

If the server processes packet transfer processes for connected CPEs, then communication between CPEs is maintained, but the tunnel authentication process for other CPEs is delayed

Engineering Contradiction:
Improvepacket transfer efficiencyVSAvoidtunnel authentication time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The patent applies parameter changes by dynamically adjusting the communication band parameter for packet transfer processes based on server state. When tunnel authentication is prioritized, the system reduces the bandwidth parameter for packet transfer, allowing authentication requests to be processed faster while maintaining sufficient bandwidth for ongoing communications.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The management apparatus implements a feedback mechanism by monitoring the server's processing state and using this information to adjust bandwidth allocation. The system continuously receives feedback about server load from tunnel authentication requests and packet transfer activities, then modifies communication band parameters accordingly to balance both functions optimally.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS11463515B2Management device and management method
Publication Date: 2022.10.04 NIPPON TELEGRAPH & TELEPHONE CORP
  • US11463515B2 patent drawing
  • US11463515B2 patent drawing
  • US11463515B2 patent drawing

AI summary

An acquisition unit acquires a state of a server including pieces of virtual CPE, and an instructing unit instructs CPE connected to the virtual CPE to control a communication band based on the state of the server. The instructing unit instructs the CPE to limit a communication band to a predetermined value or less based on a CPU usage rate acquired by the acquisition unit exceeding a predetermined threshold value. The instructing unit instructs the CPE to limit a communication band to a predetermined value or less in based on the number of connections of the CPE acquired by the acquisition unit being less than a predetermined threshold value. The acquisition unit acquires presence or absence of CPE not connected to the virtual CPE, and the instructing unit instructs the CPE to block communication based on the presence of CPE not connected to the virtual CPE.