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Overview of Monitoring and Measurement System in EuQoS multi-domain network

Overview of Monitoring and Measurement System in EuQoS multi-domain network. Marek D a browski 1 , Philippe Owezarski 2 , Wojciech Burakowski 1 and Andrzej B e ben 1 1 Institute of Te lecommunications, Warsaw University of Technology, Poland 2 LAAS-CNRS, France. Outline. Introduction

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Overview of Monitoring and Measurement System in EuQoS multi-domain network

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  1. Overview of Monitoring and Measurement System inEuQoS multi-domain network Marek Dabrowski1, Philippe Owezarski2, Wojciech Burakowski1 and Andrzej Beben1 1Institute of Telecommunications, Warsaw University of Technology, Poland 2LAAS-CNRS, France

  2. Outline • Introduction • Architecture of EuQoS MMS • MMS for supporting trials • MMS for supporting EuQoS system functions • Exemplary deployment • Summary

  3. Therefore, development of effective Monitoring and Measurement System (MMS)is a crucial part of a system design Introduction (1) • The measurements play a key role in modern IP networks, because: • IP network becomes more and more complex • many domains administrated by autonomous operators • different network technologies, like DiffServ, MPLS, xDSL, WLAN, LAN, ... • evolve towards multi-service networks able to provideQoS (Quality of Service) • Provide knowledge about the network state useful for: • Traffic control, e.g. Measurement based Admission Control • Traffic engineering, e.g. provisioning • Operation and Maintenance: • Fault detection • Network anomaly detection

  4. Introduction (2) What is EuQoS? • 6FR EU project: www.ist-euqos.org • Objective: to develop solution for providing end-to-end QoS in multidomain, heterogeneous network EuQoS Approach QoS is provided by deployment of end-to-end Classes of Service (CoS), that support specific type of traffics with respect to their QoS requirements Use measurements to support EuSoS system functions: CAC, TERO, OAM Take a pragmatic approach

  5. USER 1 EQ-SIP proxy EQ-SDP in End-to-end QoS EQ-SIP signaling EQ-SIP proxy USER 2 Application Application EQ-SIP Signaling EQ-SIP Signaling Virtual Network Layer EQ-SDP Network technology Independent sub-layer EQ-SDP EQ-NSIS EQ-NSIS EQ-NSIS EQ-NSIS RM1 RMi RM2 n RMk RMj EQ- ETP Protocols EQ- ETP Protocols Network technology dependent sub-layer RAn RA1 RAk RAi RAj QoS Domain i QoS Domain k Access Network 2 QoS Domain j Access Network 1 Introduction (3): EuQoS Architecture Monitoring and Measurement System

  6. Architecture of EuQoS MMS (1) • The role of EuQoS MMS system is to provide tools for: • performing trials of EuQoS system • supporting EuQoS systems functions (CAC, TERO) • on-line monitoring of QoS level offered by EuQoS CoSs (OAM) • The key elements of EuQoS MMS we deal with are: • location of the measurement points inside a network • design of measurement tools • measurement control

  7. Intra-domain service in AS1 Intra-domain service in AS2 Inter-domain service AS1-AS2 Architecture of EuQoS MMS (2) Location of Measurement Points (MP) • Taking into account EuQoS network architecture • All measurements are performed on the IP layer • Measurement Points are placed in the points where particular CoS (intra- or inter-domian) begins or ends to operate AS- Autonomous System BR – Border Router

  8. Architecture of EuQoS MMS (3) Reference location of MPs: • In core network: • MPXa– input interface of the ingress border router • MPXb – entrance to the queue of output interface of the ingress border router • MPXc – input interface of the egress border router. • MPXd – entrance to the queue on the output interface of the egress border router • In access network: • MPXt – at IP interface of the user terminal

  9. MMS for supporting trials (1) • Objective: Validation the QoS level offered by EuQoS CoSs • Methodology: • establish a test flow • load the network by background flows up to CAC limit in: • Tested CoS • Other CoSs • Measure QoS parameters: IPTD, IPDV, IPLR, throughput for the test flow • Tools: • BTG: to load the network by aggregated traffic • TrTG: to load the network by traffic reproduced from traces • Netmeter: for measuring QoS parameters

  10. IPDV: IP Packet Delay Variation (IETF IPPM) • OWD: One Way Delay MMS for supporting trials (2) • Netmeter – tool for measuring QoS parameters • One-Way Delay (OWD) • IP Delay Variation (IPDV) • Packet Loss Ratio (IPLR) • throughput • MOS aproximation for VoIP • Methodology • Uses active measurements, with MGEN generator • Different traffic patterns: • CBR • Poissonian • ON/OFF • greedy TCP

  11. MMS for supporting EuQoS system functions (1) Objective: to support the performance of EuQOS system functions: • Call Admission Control (CAC) • MMS provides information about available inter-domain routing paths and the QoS level offered by them (gathered from EQ-BGP) • MMS provides information about instantaneous load on the inter-domain links used for measurement based admission control • Traffic Engineering and Resource Optimisation: • MMS provides load carried inside each CoS used for network provisioning • Operation & Mantainence • On-line monitoring of QoS level (values of IPTD, IPDV, IPLR) offered by CoSs

  12. MMS for supporting EuQoS system functions (2) • TAT: Topology Acquisition Tool • LLMT: Link Load Measurement Tool • ORENETA: QoS monitoring tool • MMS Measurement Controller • Controlling the tools • Collecting results • Interface with EuQoS MMFM TAT

  13. TAT: Topology Acquisition Tool • TAT: Tool for gathering available inter-domain routing paths • Methodology • Periodically reads EQ-BGP routing tables • Exemplary results TAT ROUTER_IP |PREFIX |MASK|COS|STATUS|NEXT_HOP |AS_PATH |QOS (EQ-BGP) 10.205.0.1|10.203.0.0|16 |1 |BEST |10.203.0.1|65511 |10 32 7 N/A 10.205.0.1|10.203.0.0|16 |2 |BEST |10.203.0.1|65511 |5 16 7 N/A 10.205.0.1|10.203.0.0|16 |2 |ALT |10.204.0.1|65510 65509|5 16 7 N/A

  14. Fri 07 Oct 2005 12:16:27 PM CEST-963093000 Total available BW (B/s): 99900000 Used BW per TOS value (B/s): TOS: 0 Used BW: 100000 TOS: 1 Used BW: 0 TOS: 2 Used BW: 0 TOS: 3 Used BW: 0 TOS: 4 Used BW: 0 LLMT: Link Load Measurement Tool • LLMT • Measures average bit rate of carried traffic inside given COS • Methodology • Passive monitoring of a given link • Capture packets with Tcpdump or DAG cards • Count transmitted bytes • Calculate average load in intervals of length Dt • Exemplary results

  15. ORENETA: QoS monitoring tool • Tool for on-line monitoring QoS level offered by CoSs • Methodology • Passive, on-line measurements • Real Time traffic capture • Flow detection • Obtained results • One-Way Delay (OWD) • IP Delay Variation (IPDV) • Packet Loss Ratio (IPLR)

  16. Exemplary deployment of MMS in WiFi • Problems with deployment of MMS tools • Limited access to the routers • In case of WiFi it is not possible to use aggregate models of background traffic as the number of terminals influence results • MP1, MP2, MP3 has installed: • Netmeter • Oreneta • BTG • TRTG • MMS Controller • TAT • Netmeter analyser • Oreneta analyser • LLMT Controller

  17. Summary • The paper presents an overview of MMS system designed for EuQoS • There are two groups of MMS tool: • tools for trials • tools for supporting EuQoS system functions • Developed tools are ready and will be used planned tests

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