Ethernet Access Network Traffic Diversion via Address Conversion
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Solution Overview
Problem
Ethernet-based access networks face significant challenges due to the increasing volume of peer-to-peer traffic, which occupies a large proportion of bandwidth and leads to contention, delays, and increased inter-exchange fees, necessitating a method to reduce its impact while maintaining traffic separation.
Innovation Solution
A broadband access network with a routing node that identifies and reroutes peer-to-peer traffic by generating address conversion information, allowing packets to be redirected through the shortest route within the network, concealing end-user addresses and reducing the load on network switches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If forced forwarding is used to prevent layer 2 connectivity between end users, then traffic separation is maintained, but peer-to-peer traffic occupies a large proportion of bandwidth between access and edge nodes
Solution Approach 1:
The patent segments peer-to-peer traffic from other traffic types by identifying it through source and destination address matching, then handles it through a separate path (direct routing between access nodes) rather than forcing it through edge nodes like other traffic
Solution Approach 2:
The routing node acts as an intermediary that receives peer-to-peer traffic from access nodes, identifies it through address conversion information, and redirects it directly to the destination access node without requiring edge node involvement
2Reliability
If all peer-to-peer traffic is routed through edge nodes, then traffic separation is maintained, but network responsiveness and customer satisfaction deteriorate due to contention and delays
Solution Approach 1:
The system performs preliminary identification of peer-to-peer traffic at the access node level using address conversion information from routing nodes, enabling direct routing decisions before traffic reaches edge nodes, thus avoiding delays
Solution Approach 2:
The patent creates a separate handling path for peer-to-peer traffic that bypasses edge nodes entirely, segmenting it from the standard traffic flow that must pass through edge nodes for forced forwarding
3Device complexity
If standard routing is used without address conversion, then routing simplicity is maintained, but end user addresses are exposed and traffic separation is compromised
Solution Approach 1:
The routing node serves as an intermediary that introduces address conversion information, acting as a mediator between the simple routing infrastructure and the requirement for address concealment and traffic separation
Solution Approach 2:
The system creates copies of address information in the form of address conversion information that enables routing decisions without exposing actual end user addresses, allowing standard routing hardware to function while maintaining security
Data Source
AI summary
An arrangement and method for relieving the traffic load on an edge node in a broadband Ethernet-based access network, which normally employs traffic separation such that all traffic is routed via the edge node. Peer-to-peer traffic between end users places a large burden on the capacity of the edge node. The edge node identifies peer-to-peer traffic and generates address conversion information for access nodes connected to the end users concerned. The access nodes identify packets forming part of the peer-to-peer connection, modify address information to conceal the address of the source end user from the destination end user, and vice versa, and reroute the packets through the access network to the destination end user without passing through the edge node.