NMS Duplicate Address Detection in Optical Networks
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Solution Overview
Problem
Conventional Optical Signaling and Routing Protocol (OSRP) and Open Systems Interconnection/Intermediate System-Intermediate System (OSI/ISIS) networks lack mechanisms to quickly and efficiently identify misconfigurations, leading to prolonged detection times for network issues such as duplicate IP addresses, which disrupt network operations.
Innovation Solution
A Network Management System (NMS) is configured to detect duplicate addresses by exchanging topology information through Hello packets, synchronizing databases, and launching NE mediators to listen for updates, asserting alarms for error conditions, thereby identifying and addressing misconfigurations promptly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If manual methods are used to detect duplicate addresses in OSRP and OSI/ISIS networks, then device complexity is reduced, but detection time increases significantly
Solution Approach 1:
The patent introduces an intermediary system (NMS with duplicate address detection capabilities) that mediates between network elements and administrators. This intermediary automatically monitors topology information, compares addresses, and detects duplicates, thereby reducing detection time from days to minutes while managing complexity through automation rather than manual processes
Solution Approach 2:
The system enables self-service detection by automatically monitoring its own topology information through Hello packets and database synchronization. The NMS autonomously compares addresses, asserts alarms for duplicates, and notifies administrators without requiring manual intervention, thus reducing detection time while keeping the system self-managing
2Reliability
If conventional ARP conflict detection is used in IP networks, then duplicate IP addresses are detected, but network operations are disrupted and detection is not proactive
Solution Approach 1:
The patent implements preliminary action by proactively detecting duplicate addresses before they cause network disruptions. The NMS continuously monitors topology information and asserts alarms as soon as duplicates are detected, preventing the network operations disruption that occurs with conventional reactive ARP conflict detection
Solution Approach 2:
The system establishes feedback loops where the NMS continuously receives topology information from network elements, processes it through database synchronization, compares addresses, and provides immediate feedback via alarm assertions when duplicates are found. This continuous feedback mechanism enables proactive detection and maintains network reliability by alerting administrators before disruptions occur
Data Source
AI summary
The present invention provides methods and systems for preventing the misconfiguration of OSRP and OS/ISIS networks using a NMS, including: configuring a GNE with an address and NE ID for the NMS; forwarding topology information through a management interface to a NMS server; at the NMS server, copying a topology database of all NEs that are connected to the GNE; and, at the NMS server, launching NE mediators for all of the NEs in the topology database. Each NE mediator includes a listener that listens for updates and topology changes within the network.