Presented by: Mikko Kyllönen 21.5.2008 Designing and Implementing a Router Node Simulator for Network Management Testing Presented by: Mikko Kyllönen 21.5.2008

Contents Basic information Background Stress testing Problem Simulator design possibilities Final design Initialization mode Simulation mode Basic message handling Simulator GUI Faults and PMS data Using the Simulator Simulator performance Conclusions and future development Tellabs Internal and Confidential November 15, 2018

Basic information Author: Mikko Kyllönen Title: Designing and Implementing a Router Node Simulator for Network Management Testing Supervisor: Raimo Kantola Employer: Tellabs Oy The goal was to build a simulator that would simulate a large amount of Tellabs 8600 nodes so that Tellabs 8000 Network Manager would see them as real network equipment. Tellabs Internal and Confidential November 15, 2018

Background Tellabs 8600 Managed Edge System 8600 series multiservice routers Data transport in mobile access networks IP MPLS over Ethernet, ATM, TDM… VPN and pseudowire services Tellabs 8000 Network Manager 8600, 8100, 8800, 6300, 7100… Several components Element-, Network- and Service Management FMS, PMS, customers, accounting, network tests Tellabs Internal and Confidential November 15, 2018

Stress testing Heavy tests in large environments Efficiency in terms of delays and error caused by mass usage Trend for efficiency during development releases Now environments are database only, but this is not enough This is where the Simulator is to be used Tellabs Internal and Confidential November 15, 2018

Problem How to test Tellabs 8000 Network Manager scalability? Big networks: thousands of nodes… Impossible to bring that many nodes to laboratory Can’t test wild things in production networks Could the nodes be simulated? Information model Very complex BMP protocol for node communication Hexacode based Quite simple Well specified Tellabs Internal and Confidential November 15, 2018

Possibilities for simulator design Pure infomodel implementation Hard task, maintenance problem EMS server internal simulator Very hard task, might not work ESW porting to Windows platform Does not scale Tellabs Internal and Confidential November 15, 2018

Final design Initialization --> Simulation The Simulator is initialized by running an automated test case through the simulator. The Simulator stores all the messages and “learns” how to reply to each message type The stored messages are used as a basis for the reply in the simulation mode Uses the features of BMP protocol Several advantages: quite simple, low maintenance, scalable Tellabs Internal and Confidential November 15, 2018

Initialization mode Two modes: Initialization mode Tellabs Internal and Confidential November 15, 2018

Simulation mode Two modes: Simulation mode Tellabs Internal and Confidential November 15, 2018

Basic message handling Receive the request Find a similar request from message database Get the matching response as basis for the new response Change message id and other fields if needed Send back to NMS Tellabs Internal and Confidential November 15, 2018

Simulator GUI Intuitive Easy to use Only the needed features Tellabs Internal and Confidential November 15, 2018

Faults and PMS data Special message handlers Support for a limited set of faults Easy to add more PMS data only for T1s Others use SNMP SNMP support planned but not implemented Tellabs Internal and Confidential November 15, 2018

Using the simulator For basic load Tests to real HW More like real network environment Tellabs Internal and Confidential November 15, 2018

Simulator performance Tested with 5000 nodes Probably would handle a lot more Max CPU 9%, max memory usage 30,1MB Biggest initialization 10h and 33k messages IP addressing a problem, workaround done Tellabs Internal and Confidential November 15, 2018

Conclusions and Future development The project went well Simulator is being used Simulator has been found useful Future More product families 8100, 7100, 8800, 6300 SNMP Generic fault and PMS features Simulator programmability Tellabs Internal and Confidential November 15, 2018

Questions Tellabs Internal and Confidential November 15, 2018