The Monitoring and Measurement System in EuQoS project Andrzej Beben Warsaw University of Technology, Poland

V Outline  Introduction  Architecture of EuQoS MMS  MMS for supporting trials  MMS for supporting EuQoS system functions  Current status of MMS  Planned activities  Summary

V Introduction (1) What is EuQoS?  6FR EU project:  Objective: to develop solution for providing end-to-end QoS in multi-domain, heterogeneous network (built over WiFi, xDSL, UMTS, LAN, IP core) Signalling in the network to allow user to communicate his QoS needs 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 EuQoS Approach

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

V Architecture of EuQoS MMS (1)  The role of EuQoS MMS system is to provide tools for:  performing trials of EuQoS system: to prove that EuQoS CoSs provide QoS guaranties  supporting EuQoS systems functions related with traffic management: Call Admission Control (CAC) – to make CAC less preventive Operation and Maintenance (OAM) – to on-line monitor of QoS offered by CoSs Traffic engineering (TERO) – to get knowledge about carried traffic, traffic matrices (?)  The key principles of EuQoS MMS:  location of the measurement points in the multi-domain network  development of required measurement tools (as much as possible based on the available tools)

V Architecture of EuQoS MMS (2) Intra-domain service in AS 1 Inter-domain service AS 1 -AS 2 Intra-domain service in AS 2 Location of Measurement Points (MP) to cope with heterogeneity of technologies all measurements on the IP layer MPs are placed where CoSs begins or ends to operate (intra-domain, inter-domain, end-to-end) AS- Autonomous System BR – Border Router

V Architecture of EuQoS MMS (3) Reference location of MPs in the multi-domain network:  the transit AS:  MP X a – input interface of the ingress border router  MP X b – entrance to the queue of output interface of the ingress border router  MP X c – input interface of the egress border router.  MP X d – entrance to the queue on the output interface of the egress border router  the access AS:  MP X t – at IP interface of the user terminal exemplary end-to-end scenario

V MMS for supporting trials (1)  Objective: Prove that EuQoS CoSs provide QoS guaranties  Testing methodology (for each CoS):  establish a test flow  load the network up to CAC limit by background flows in: Tested CoS Other CoSs  Measure QoS parameters for test flow (IPTD, IPDV, IPLR, throughput) that correspond to EuQoS CoSs  Required tools:  Netmeter: for measuring QoS parameters for test flow  BTG: to load the network by artificial traffic  TrTG: to load the network by traffic reproduced from traces

V MMS for supporting trials (2)  Netmeter – tool for measuring QoS offered by EuQoS CoSs  IP Transfer Delay (IPTD)  IP Delay Variation (IPDV)  Packet Loss Ratio (IPLR)  throughput  MOS approximation for VoIP  Methodology  Active measurements by MGEN and iperf generators  Different traffic patterns: CBR Poissonian ON/OFF greedy TCP IPDV: IP Packet Delay Variation (IETF IPPM) OWD: One Way Delay

V MMS for supporting EuQoS system functions (1) Objective: to support EuQOS system functions:  Call Admission Control (CAC)  To provide information about available routing paths toward destinations joitly with available EuQoS CoSs  To provide information about load carried on links that allows to make CAC less preventive (Measurement Based Admission Control)  Operation & Maintenance (OAM)  To on-line monitor QoS offered by EuQoS CoSs for: detection of QoS failures provide „QoS certificates” for users  Traffic Engineering (TERO):  To provide data for network provisioning Volume of traffic carried on inter-domain links Intra-domain traffic matrices

V Current status of MMS for supporting EuQoS system functions  MMS Measurement Controller  Controlling the tools  Collecting results  Interface with EuQoS MMFM  TAT  TAT: Topology Acquisition Tool  ORENETA  ORENETA: QoS monitoring tool  LLMT  LLMT: Link Load Measurement Tool TAT

V TAT: Topology Acquisition Tool ROUTER_IP |PREFIX |MASK|COS|STATUS|NEXT_HOP |AS_PATH |QOS (EQ-BGP) | |16 |1 |BEST | |65511 | N/A | |16 |2 |BEST | |65511 | N/A | |16 |2 |ALT | | | N/A  TAT: Tool for gathering available inter- domain routing paths and assured QOS values from EQ-BGP.  Methodology  Periodically reads EQ-BGP routing tables  Exemplary results TAT

V ORENETA: Domain QoS monitoring tool  Tool for on-line monitoring QoS level offered by CoSs (intra-domain)  Methodology  passive, on-line measurements  real time traffic capture (libpcap)  flow detection  Measured parameters per CoSs:  One-Way Delay (OWD)  IP Delay Variation (IPDV)  Packet Loss Ratio (IPLR)

V 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 libpcap or DAG cards  Count transmitted packets/bytes inside particular CoS  Calculate average load in intervals of length  t  Exemplary results Fri 07 Oct :16:27 PM CEST Total available BW (B/s): Used BW per TOS value (B/s): TOS: 0 Used BW: TOS: 1 Used BW: 0 TOS: 2 Used BW: 0 TOS: 3 Used BW: 0 TOS: 4 Used BW: 0

V Planned activites for support EuQoS system functions  On-line QoS monitoring in multi-domain scenario  To design and implement inter-domain measurement and control protocol that will collect end-to-end QoS values  Investigate measurement base admission control (MBAC) approaches:  based on Hoeffding bound  based on available bandwidth  Provide data for TERO  Intra-domain traffic matrices

V Summary  an overview of MMS system designed for EuQoS was provided  two groups of MMS tools are investigated:  tools for performing trials  tools for supporting EuQoS system functions  The EuQoS MMS is under development  Future activates are specified