Automated Network Element Policy Configuration for Data Center Traffic
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Solution Overview
Problem
Manual configuration of routing and traffic redirection policies in data center networks is tedious, time-consuming, and error-prone, especially when managing load balancing and application delivery services across multiple network elements.
Innovation Solution
Automating the configuration of return traffic redirection by injecting forwarding policies into network elements, establishing communication channels between service appliances and network elements, identifying and implementing policies on relevant ports, and propagating policies through the network to ensure return traffic is directed back to the service appliance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual configuration of routing and traffic redirection policies is performed, then network control and policy implementation are achieved, but the configuration process becomes tedious, time-consuming, and error-prone
Solution Approach 1:
The network element automatically discovers service appliances and their associated policies through self-service mechanisms. The forwarding policy implementation is performed autonomously by the network element based on received policy information, eliminating the need for manual configuration and reducing both time and errors.
Solution Approach 2:
A policy information receiving module acts as an intermediary between service appliances and the network element's forwarding plane. This intermediary receives forwarding policies from service appliances and automatically translates them into appropriate port configurations, streamlining the configuration process.
2Reliability
If manual configuration of forwarding policies on multiple network elements is performed, then return traffic redirection is achieved, but operational complexity and error rate increase
Solution Approach 1:
The network element autonomously identifies ports that need policy application by examining its own port configurations and routing tables. The system automatically determines which ports are associated with service appliances and applies forwarding policies accordingly, without requiring manual intervention to analyze complex network topologies.
Solution Approach 2:
The forwarding policy configuration is segmented into distinct functional modules: a policy information receiving module that accepts policies from service appliances, a port identification module that discovers relevant ports, and a policy application module that implements the forwarding rules. This modular approach simplifies the overall configuration complexity.
3Productivity
If automated forwarding policy injection is implemented, then configuration time is reduced, but system automation complexity increases
Solution Approach 1:
The network element's control plane is enhanced with a universal policy information receiving module that can handle forwarding policies from multiple service appliances simultaneously. This multi-functional module consolidates what would otherwise require separate configuration mechanisms for each service appliance, improving productivity without proportionally increasing complexity.
Solution Approach 2:
The system implements feedback mechanisms where the network element monitors port status and traffic flows to verify that forwarding policies are correctly applied. This feedback loop ensures that automated configuration produces the desired results and allows for dynamic adjustment if policies need modification, enhancing productivity through reliable automation.
Data Source
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AI summary
In one embodiment a forwarding policy from a first network node coupled to a network element is received. The forwarding policy specifies an address of a second network node coupled to the network element. A plurality of ports of the network element are identified, wherein the second network node is accessible from the network element through each of the plurality of ports. The forwarding policy is applied to the plurality of ports of the network element. Network traffic received at a port of the plurality of ports from the second network node is forwarded to the first network node.