ARP-Based Forwarding Rule Configuration in Traffic Distributors
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Solution Overview
Problem
Current methods for configuring forwarding rules in traffic distributors are prone to human errors and require manual configuration, leading to traffic loss and additional operational expenses, especially when adding or removing servers in a cluster.
Innovation Solution
The use of the Address Resolution Protocol (ARP) to automatically generate and configure forwarding rules in traffic distributors based on predefined criteria such as port ranges, CPU load, or other IP packet elements, eliminating the need for manual configuration and additional network management layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual configuration of forwarding rules is used in traffic distributors, then flexibility and control are improved, but human errors increase and operational expenses rise
Solution Approach 1:
The system enables self-service automation where the traffic distributor automatically generates and configures forwarding rules based on received ARP messages, eliminating the need for manual configuration by network operators. The host automatically sends ARP messages with forwarding rule information, and the traffic distributor automatically processes these messages to create the appropriate forwarding rules, thereby reducing human errors while maintaining operational control.
2Ease of operation
If manual configuration of forwarding rules is used, then initial setup control is improved, but configuration time and productivity decrease
Solution Approach 1:
The host prepares and sends ARP messages containing forwarding rule information in advance, allowing the traffic distributor to automatically configure rules before traffic needs to be forwarded. This preliminary action enables the system to have forwarding rules ready proactively, improving configuration speed while maintaining control over the configuration process through the structured ARP message format.
3Manufacturing precision
If manual reconfiguration is performed when adding or removing servers, then configuration accuracy is improved, but traffic loss increases
Solution Approach 1:
The system implements feedback mechanisms where the traffic distributor continuously monitors ARP messages from hosts and dynamically updates forwarding rules in real-time. When servers are added or removed, the hosts automatically send updated ARP messages, and the traffic distributor automatically adjusts its forwarding rules without manual intervention, maintaining configuration accuracy while preventing traffic loss during transitions.
4Adaptability or versatility
If additional network management layers are added for configuration, then configuration capability is improved, but device complexity increases
Solution Approach 1:
The system uses the existing ARP protocol, which is universally supported by all IP networks, to carry forwarding rule configuration information. Instead of creating a new dedicated configuration protocol or management layer, the invention repurposes the universal ARP protocol to perform multiple functions including address resolution and forwarding rule configuration, thereby maintaining configuration capability while avoiding additional system complexity.
Data Source
AI summary
A method, by a host providing an application, configures forwarding rules in a traffic distributor using an address resolution protocol. The host receives IP data packets distributed by the traffic distributor to different hosts located in a first network based on a predefined forwarding criterion contained in the forwarding rules. The host applies the application to the IP data packets. The host determines whether a predefined operating status of the host is met. If met, a message is generated using the address resolution protocol. The message contains information for which at least one characteristic of the predefined forwarding criterion the IP data packets should be forwarded to the host, and a configuring indicator by which the traffic distributor is initiated to generate the forwarding rule for the host taking into account the at least one characteristic contained in the message. The generated message is transmitted to the traffic distributor.