Access Node Provisioning Bridge for Ethernet DPDs
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Solution Overview
Problem
Existing Ethernet-based access networks face challenges in scalable provisioning due to the lack of remote provisioning support for basic demarcation point devices (DPDs) and compatibility issues between advanced DPDs and provisioning systems, leading to fragmented management and provisioning of access networks.
Innovation Solution
Implementing access nodes as provisioning bridges that discover, authenticate, and provision DPDs using layer two protocols, enabling them to act as a management bridge between DPDs and the back-office provisioning system, regardless of their protocol compatibility, and facilitating interoperability through protocol translation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If basic DPDs are used for Ethernet access, then device simplicity and ease of deployment are improved, but remote provisioning capability deteriorates
Solution Approach 1:
The patent introduces an access node as an intermediary device between the basic DPD and the back-office provisioning system. The access node performs protocol translation, converting L2 provisioning protocols used by basic DPDs into L3 protocols understood by the provisioning system, enabling remote provisioning without requiring the DPD itself to have advanced capabilities
Solution Approach 2:
The system segments the provisioning function into two parts: the basic DPD handles only simple L2 frame forwarding without provisioning capabilities, while the access node handles the complex protocol translation and communication with the provisioning system. This segmentation allows the DPD to remain simple while the system as a whole achieves remote provisioning
2Extent of automation
If advanced DPDs are deployed to support remote provisioning, then provisioning capability is improved, but device complexity and cost increase
Solution Approach 1:
The access node serves as a mediator that shields advanced DPDs from direct interaction with complex provisioning systems. The access node handles protocol translation and communication overhead, allowing advanced DPDs to maintain remote provisioning capability while reducing their own complexity by offloading translation functions
3Adaptability or versatility
If protocol translation is implemented at the access node, then interoperability between DPDs and provisioning systems is improved, but access node complexity increases
Solution Approach 1:
The access node is designed with multi-functionality, serving both as an Ethernet aggregation device and as a protocol translation bridge. By integrating provisioning bridge functionality into an existing access node rather than adding separate translation devices, the patent improves interoperability while minimizing the increase in overall system complexity
4Ease of manufacture
If basic DPDs without L3 addressability are used, then device simplicity is improved, but network management and provisioning become fragmented
Solution Approach 1:
The access node acts as a mediator that enables unified network management for basic DPDs without L3 addressability. It translates L2 management traffic into L3 protocol messages, allowing the provisioning system to manage basic DPDs through a unified interface despite their lack of native L3 capabilities, thereby eliminating management fragmentation
Data Source
AI summary
In general, techniques are described for provisioning network devices in an Ethernet-based access network. For example, an access node located in an Ethernet-based access network positioned intermediate to a back office network and a customer network may implement the techniques. The access node comprises a control unit that discovers a demarcation point device that terminates the access network of the service provider network at the customer network. The control unit of the access node implements an Ethernet protocol to provide layer two network connectivity between the service provider network and the customer network, authenticates the demarcation point device based on a unique identifier assigned to the demarcation point device and, after successfully authenticating the demarcation point device, provisions the demarcation point device.