monitoring and measurements, multi-domain networks, heterogeneous networks, QoS the

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1 Overview Marek 1Warsaw Dąbrowski1, of Monitoring Philippe multi-domain Owezarski2, and Measurement Wojciech network Burakowski1, System Andrzej in EuQoS University of Technology, 2LAAS-CNRS, Institute France of Telecommunications, Poland Bęben1 Because Abstract Quality the dynamicity. new lacks measurement of capabilities of of Service the This previous variability (QoS) tools the of researches monitoring approach can in of the be the Internet essential traffic are taken tools understood. in is and for the still the recent coping EuQoS a related very It advances is with big project obvious dynamicity challenge traffic [1], in that traffic variability which after of the network characterization, real aims a decade time at resources, providing adapting information of research modeling providing end-to-end network from the and area. monitoring guaranteed resources analysis, Given for that and heterogeneous toring scribe tem the was functionalities, tools. this MMS developed way In in multi-domain to this EuQoS support by and paper EuQoS is (3) threefold: trials we to networks and present perform of deployed the (1) with the EuQoS on-line main provide IP networking the system features multi-domain adequate monitoring (2) of level the perform set by Monitoring of research taking tools measurements network for advantage testbed measuring and Measurement network. operator. supporting of measurement QoS The In the general the System paper packet EuQoS and purpose (MMS) we moni- level over mentioned Keywords the general MMS objectives. MMS architecture, containing information about the developed tools related with each of sys- de- monitoring and measurements, multi-domain networks, heterogeneous networks, QoS the 1. Providing Introduction traffic of and particular, the last Internet DiffServ, decade. and then and guaranteed Many but proposed the it none has solutions related been of Quality approaches them dynamicity one have has of been the Service met have of most the proposed available been (QoS) need addressed stymied of among is resources users one issues by of and which the the in in providers complexity the research challenges the network. most (carriers, in and famous of networking Such variability the ISP, evolution explanation are etc.). IntServ during of the of that studying, variations previous Internet characterizing in proposals its traffic throughput under failure and normal at has analyzing all been scales conditions exhibited Internet [2], often presents in traffic. described recent per In monitoring se particular, in or terms naturally projects, of is long large commonly memory which fluctuations have observed [3], been selfsimilaritsources what [4], makes multifractality difficult [5]. the enforcement Such characteristics guaranteed imply a and large stable dynamicity QoS. Enforcing of network QoS re- and in

2 the project strict assuring different agement, exploited. Internet end-to-end [1] access QoS traffic Fig. which then guarantees 1 networks engineering, shows QoS requires aims guarantees at an (WiFi designing, at to example the re-design resources and packet over of LAN/Ethernet) implementing multi-domain networking optimization, level, concept and functions and heterogeneous etc. testing two This of core as an Classes is admission architecture IP the networks. objective of Service control, consisting environment. [6] of that (CoS) the fault provides EuQoS of [6] man- two For is is vides adapting For supported coping Fig. by 1. the Exemplary network resources architecture Monitoring dynamicity of multi-domain Measurements and traffic variability, heterogeneous System (MMS) the EuQoS network with real-time measurements and information the traffic, which [8]. is architecture egy ficulties The design is to due available of to this the resources MMS different system needs and of really better the networking a major managing issue functions: them. of the EuQoS for instance, system. traffic One MMS needed of engineer- the proquired functions and performing require information provisioning. very coarse On scale other side, appropriately for congestion adapting control, routing it strat- is dif- for large formation The new packet to have at different burst very caused fine levels: grain connections, instance information by TCP. flows, as the As packets, network well, the bytes, has to security react system very or has failure fast to provide alerts, case of etc. re- QoS The MMS networking multi-domain intension system of functions. then this network. paper is an The integrated is to main provide motivations toolbox an overview which for provides the of the MMS MMS all are: needed that (1) was to information provide deployed adequate for in Eu- the in- a a metrics, EuQoS ities, set of multi-function The the of and tools EuQoS paper time-scales, (3) for to is system organised measuring perform system locations (2) on-line and as to QoS follows. perform is etc). QoS relatively the monitoring In measurements packet section complex level 2 for we and, with the supporting explain network a this variety way, details the operator. of EuQoS measurements the allow role Hence, system performing MMS the functional- (different MMS in trials scribed Finally, in section network. section 5 summarises The 3, respectively. proposed the MMS paper. In section architecture 4 we report (including the exemplary short description deployment of tools) of MMS. is de- the is

3 2. that ticular, ditions We The is assume sufficient we To role of that MMS the primary EuQoS applications for need load performing the following: that performing system trials are by representative with generating expectation trials respect of the to artificial for from EuQoS particular the assessment traffic system EuQoS CoSs. profiles as MMS in deployed For controlled corresponding example, is to provide the and the testbeds. repeatable end-to-end set the of In tested tools con- parlephony are equired: CoS and foreground (e.g. background [6]) we (measured) must one load corresponding traffic with representing VoIP to traffic. traffic traffic Anyway, generated two by types along a number of a single te- The next connections should way To network, measure objective to load create that the (aggregated packet is the of packet system the worst-case transfer MMS delay to traffic). the is (mean characteristics to traffic provide Furthermore, conditions value limit well evaluated illustrating measurements the variation) system. total by the admission volume needed QoS and packet level of for control submitted supporting offered loss and ratio. by traffic Eu- this the of includes destination QoS traffic control related system with function, inter-domain obtaining functions. respectively. information links In particular, will In provide addition, about the support long-term available we assume for end-to-end and the that short-term network the QoS MMS provisioning measurements paths has also established a and specific admission carried ered EQ-BGP the protocol cumulative [6]. This values information of QoS parameters stored that the are routing guaranteed tables of along border routers path to by and given task Maintenance Finally, QoS the domain. the last operational objective of network. the MMS This task provide belongs adequate the Operation, tools for monitoring Administration the deliv- and the where we encounter (OAM) problems area and related it is especially with challenging limited possibility the of multi-domain sharing the measurement environment, it an information 3. In The this architecture section between present different of EuQoS the providers proposed MMS and architecture their MMS of systems. connected als, 3.1 example supporting by of the EuQoS MMS core network. as system deployed and The QoS in system an monitoring. EoQoS consists network of three the consisting EuQoS parts related MMS. of two with In Fig. domains supporting 2 we inter- show in For a The fully supporting MMS controlled for trials supporting testbed we need environment. trials a set of measurement As a basic tool tools serving that is this adequate purpose for we QoS have evaluation selected tri- Netmeter the Measurement active foreground measurement [7] Points which traffic. measures (MP). Thus, method. The it the can Netmeter The packet be Netmeter regarded level implements QoS uses a freely metrics control intuitive available (i.e. entity Graphical IPTD, for tool MGENs IPDV, User IPLR installed for generating [6]) using the

4 Measurement MMFM Controller MMS Oreneta measurement Oreneta supporting system MMS monitoring LLMT, EuQoS system Domain tools and in TAT EuQoS 1 for in Netmeter, MGEN, Domain BTG, TrTGAN RM results DB MMFMRM DBEuQoS system in MGEN, 1BR BTG, TrTGMMS tools for Core supporting networkmeasurement Controllermeasurement LLMT, MMS TATOrenetaOreneta resultssupporting system MMS monitoring Domain tools and EuQoS 2for in trials BRDomain MGEN, AN2 Measurement Point measurement Intra-domain BR: Inter-domain measurement BTG, Intra-domain AN: Border Access Router Network equipmentmmfm: End-to-end measurement RM DB: Monitoring, Resource Manager Measurement measurement Database TrTGNetmeter, and Fault BTG, Detection TrTG MGEN, generate tor Interface (GUI) for managing Fig. the 2. The tests architecture and allows us of for EuQoS collecting MMS second e.g. profiles Script by calculating corresponding the (BTG) background [8] the appropriately statistical to the traffic, aggregated distributions we configures have connections. developed and MGEN plotting two First, order graphs. additional the to Background Since generate and tools post-processing the traffic for Netmeter Traffic emitting coming Genera- does results level number traces one, of collected Trace-based simultaneously during Traffic running simulation Generator experiments (TrTG) of the with [8], Constant allows EuQoS us Bit for Rate packet re-playing (CBR) level the type. simulator packet- traffic from The not in grated SIM-EuQoS-PTL 3.2 Obviously, the The simulation MMS the for experiments, MMS [9]. supporting Thanks tools aimed like to EuQoS it, e.g. we at Poisson, supporting can System use N-state the EuQoS trials and functionalities the MMDP same models. traffic must profiles be closely as assumed a acquire ture custom entities with the communication measurement the EuQoS system results. interface, deployed This which interface allows given is domain. implemented the EuQoS For system this between purpose to the control we following have the developed tools architec- inte- ticular from The (see EuQoS MMS the Fig. domain, MPs. Measurement 2): Monitoring, i.e. initiates Measurement Controller and terminates (MC), and which Fault the Management manages measurements the (MMFM) tools and deployed collects module in results par- [6], and which obtains the measurement results from the MC and stores them in the Resource

5 measuring amount functionalities. We have Manager for developed all The EuQoS Database first two system one, measurement (RM Link modules. DB). Load tools The Measurement RM aimed DB specially is a common Tool at supporting (LLMT) data repository [8], the EuQoS allows accessible tool monitors the carried by particular CoSs the inter-domain links. This tool takes system libpcap a has link library of two and the traffic traffic. sends components: or the that periodically The DAG passes tap card (1) can through a respectively. (periods be LLMT based the depends controller, probe software during the which the or needs hardware last is generic, of period. the networking tools and For as LLMT being for function) example generic tap us which a this tap the for tablished (TAT) For collect retrieving [8]. by their The TAT routing from EQ-BGP runs border tables. protocol routers By MC appropriately [6] the and we information periodically have developed merging about polls available the all the border information Topology end-to-end routers Acquisition obtained QoS given paths from domain Tool es- for flexible needs routers mains. The supporting will This above-described and it be creates list open identified is the conveyed MMS a EuQoS consistent tools architecture the system future are the list adequate MMFM of development functionalities. allows currently module for us providing for available of and integrating Anyway, the to EuQoS the end-to-end all RM measurements let new system. us DB. measurement remark QoS paths currently that the tools other designed required if such do- all 3.3 For The QoS MMS monitoring for QoS monitoring Netmeter continuous immediate bilities QoS the Oreneta monitoring since access way, does works is tool using not designed according the introduce called e.g. recent operational rather Oreneta to mechanism additional results. for network [8] passive performing Unfortunately was probing of moving integrated measurement we need traffic off-line measurement the a with tool on Netmeter scheduled method, the that the monitored EuQoS performs window, does which tests. not MMS. path. measurements Therefore, means and offer Furthermore, allows that such Oreneta on-line unlike us capa- for a meters analyser and fixed RM CoSs calculates measurement running the on on values intervals the the MPs MC of metrics the collect gathers results illustrating information data are from transferred the about current meters to packets the QoS deployed MMFM crossing level along module inside given the particular and monitored MP, stored while CoS. path domain In Let fact, DB. us has managing a remark single no direct domain. that the access on-line the In this to current QoS the way MPs measurements MMS we located imitate architecture the on different realistic multi-domain we support independently situation paths QoS where monitoring is managed the a complex MC domains. only given task, the of In which ministrative 4. In Exemplary this requires section domains. exchanging deployment we present We plan the an to of exemplary deal MMS with this system deployment information issue a of future between the MMS work. the system MMSs in in one multiple of EuQoS ad- testbed and provide exemplary results measured with the aid of designed tools. The testbed,

6 presented tions other connected EuQoS Fig. testbeds. to 3, the is users WiFi access dedicated MP1 point for (AP). WiFi The technology AP through Border and router consists the border of a router number is connected of wireless with sta- MP2AP CISCO AIRONET1200I WIRELESS ACESS POINT MP3Controler MMStestbeds Link other to In addition Three measurement for deploying points the Fig. MMS 3. MP1, Topology system MP2 we and of the use MP3 the WiFi with following installed terminals: GPS MMS Moreover rectly MMS ler Oreneta software. connected controller we meter put software. LLMT to that the has border and installed The Oreneta MP1 router. Netmeter, and meters MP2 on Oreneta are the attached border analyzer, to router. the TAT MGEN, AP, Such and while BTG, LLMT deployment MP3 TrTG control- is and possible tools allows us to fulfill expectations put on the MMS system. Below we briefly describe di- 4.1 The Measurements objective measurements of trials for and trials present to evaluate exemplary the QoS results. level assured by EuQoS system. The general of procedure connection tions. corresponding Fig. For 4. stressing assumes established to distribution that the between WLAN measure - of Standard EuQoS MP1 network OWD WiFi and the WiFi measured we MP3 QoS use level using BTG for experienced Netmeter standard TrTG and tool by tools. under - packets Standard EuQoS The different WiFi WiFi exemplary belonging are load presented to results condi- test Fig. 4 Exemplary (a) uplink results of OWD measured (b) by downlink Netmeter tool

7 4.2 provides network entry, The For Measurements exemplary the supporting mask, to following the DSCP EuQoS for information value, supporting system system route available functions status displayed: EuQoS routing ( best system we border design paths alternative ), router taken TAT address, and from LLMT the next-hop route border tools. prefix, address, router. The length TAT AS For path. each of tool BEST ALT ALT ALT BEST N/A BEST N/A output TAT is shown on Fig N/A N/A N/A N/A a are In The performed this LLMT example there are Fig. four 5 available Exemplary destinations, output from each TAT of them tool BW: Total TOS: Used Fri provides every 007 BW available TOS: Oct 1 per sec. Used measures TOS The BW: BW value 12:16:27 Used exemplary (B/s): about BW: (B/s): PM traffic CEST results TOS: carried from 41 Used on LLMT inter-domain BW: are 00 presented with TOS: link. one 2 The on alternative Used Fig. measurements 6. path. TOS 4.3 One can observe, that Fig. in all 6 Exemplary intervals the output value of from measured LLMT throughput tool ured neta QoS Measurements analyser on field monitoring border fixed for router one 0 is for was measurement preformed QoS equal packets monitoring 100kbytes/s, sent interval. Oreneta TrTG tool. which tool The from is presented consistent MP1. They on with Fig. show the 7 emitted values the of traffic output traffic. were with of meas- Ore- the [THROUGHPUT] [ FLOW:0009 PKLOSS MTR PPS OWD IPDV L3:IPv4 Fig. ] M[1] 7 Exemplary L4:UDP /32954 bytes/s seconds packets/s output from M[2] Oreneta -> tool /3000 ject, 5. pose, ability This Summary which the and paper main resource aims has principle at presented providing dynamicity. of the QoS EuQoS current Information in a heterogeneous state system of on deals the traffic, MMS with and resources multi-domain adapting system designed and in real actual network. time in the network to For EuQoS traffic this QoS vari- pro- pur- is

8 provided EuQoS, measuring erator. One this way of system that by the multiple to the is: originality support functionalities, (1) MMS to metrics, provide trials system. of EuQoS of with and adequate the The various EuQoS (3) MMS MMS to set perform granularities is system deals of to tools provide with on-line (2) for to various depending measuring a perform QoS complex monitoring objectives measurements QoS system the at requirements of the for combining measurements the packet supporting network level tools of and op- the for in different and urement poses work change However, monitoring information networking this system stage, to functions. that the the can single MMS fulfill The EuQoS system the needs is MMS still of controller any devoted can kinds be regarded of the collecting networking network, a monitoring generic functions. which measurement component is some of measurement design drawbacks and develop related information with the measurement a between centralized MMSs MMS deployed architecture. protocol, different which One of should domains. the goals deal certainly This and of with future meas- a key im- Acknowledgements a measurement based networking architecture. ex- 1. References tract This The IST work IST-EuQoS FP6 was IP , supported (End-to-end EuQoS. by the Quality European of Service Union 6th support Framework over heterogeneous Programme under networks) con- 2. project, K. Park, cols, page A. range Erramilli, 171, and dependent G. self-similar Washington, Kim, O. Narayan, packet and network M. DC, traffic. Crovella. and USA, traffic. W. ACM/IEEE 1996 On Willinger. In the International relationship transactions Experimental Conference between queueing Networking, file on sizes, Network analysis transport 4(2): , with Protocols, proto- 5. K. Walter pages Park Willinger, and Wiley W. Willinger. (Interscience editors, Self-similar Self-Similar Division), network Network traffic: Traffic An overview. and Performance In Kihong Evaluation, Park long- 6. A. O. the tions, Feldmann, Dugeon, multifractal technologies, A.C. nature al., architectures, End Gilbert, of internet to and End wan W. and Quality Willinger. protocols traffic. of Service In ACM/SIGCOMM Data for computer over networks Heterogeneous communication, as conference cascades: Networks Investigating Applica- (Eu- and G. Deliverable IPS-MoMe W. QoS), 2005, R. Stea Serral-Gracia, Burakowski Warsaw, NetCon 2005, al., D2.1.3, 2005, Simulation Poland, (ed.), Warsaw, August al., Lannion, March Developing Active Model Poland, November measurement for March the End-to-end monitoring tool QoS for and across the measurement EuQoS Heterogeneous project, system, Networks, IPS-MoMe EuQoS