J-OWAMP web interface user`s manual
Contents
1. Site version 2 1 Figure 11 Add a new Terminal Page 19 of 26 J OW AMP Java Implementation of OWAMP Web Interface e 3 Ea http 127 0 0 1 jowamp JOWAMP_Files JOWAMP_ShowPage php link JOWAMP_Downloads php Go ia f X va E J OWAMP Measurement Platform urongi tay Home About J OWAMP Configurations Session Results dd Terminal Download J OWAMP Downloads J OWAMP source code J OWAMP executables for Windows J OWAMP executables for Linux J OWAMP user manual J OWAMP detailed description Site version 2 1 Figure 12 Download a 80 Ea http 127 0 0 1 jowamp JOWAMP_files JOWAMP_ShowPage php7link JOWAMP_RegisterTerminals php co ia 8x waa i J OWAMP Measurement Platform euroNngl wet About J OWAMP Configurations Session Results Add Terminal Download Error The machine with IP 192 168 0 10 4181 doesn t have a Session Sender installed port 4181 or the connection to it is broken Register new terminals Sender Address Receiver Address Site version 2 1 Figure 13 Register Terminals Page 20 of 26 J OW AMP Java Implementation of OWAMP Web Interface D BO BD FG htte flocalhost jowamp JOWAMP_files JOWAMP_Error php co G m at JOWAMP Measurement Platform Lingi farHome Logout About J OWAMP Configurations Session Results Add Terminal Download Error Sorry the machine with IP 192 1682. SenderAddress ReceiverAddress Interval StartTime 21 56 00 0 o 24 621 3 12 2005 0 141 0 164 0 0 0 0 24 616 24 626 ee 1 2 127 0 0 1 127 0 0 1 4181 127 0 0 1 j 22 01 00 0 199 o 0 24 584 3 12 2005 0 135 0 262 0 0 0 0 24 531 24 637 127 0 0 1 127 0 0 1 4181 127 0 0 1 21 58 00 0 165 0 3 12 2005 0 162 0 168 o o 22 03 00 0 163 0 3 12 2005 0 046 0 28 0 0 Figure 15 Results representation using Tables Page 21 of 26 J OW AMP Java Implementation of OWAMP Web Interface By amp gt BD SD FR http 127 0 0 1 iowamp JOWAMP_files JOWAMP_ShowPage php link JOWAMP_Results php amp 55 ZeresultType _ Go lia BX voit T J OWAMP Measurement Platform euroNgGl Home Logout 4bout J OWw AMP Co nfig urations Session Results Add Terminal Download Configuration details for this test session 127 0 0 1 m 127 0 0 1 4181 am 127 0 0 1 Ee JE lest 56 0 5 12 7008 z mii Individual packet results for this test session F sequenceNumber sentTime receivedTime delay ms a Acne ARE S E 21 56 01 3 12 2005 21 56 01 3 12 2005 0 074 21 56 01 3 12 2005 21 56 01 3 12 2005 0 177 3 lea56 02 9 12 2005 2156 02 3 12 2003 0 165 21 56 04 3 12 2005 21 56 04 3 12 2005 0 069 21 56 05 3 12 2005 21 56 05 3 12 2005 0 128 lea s6 06 3 12 2005 21 56 06 9 12 2005 0 356 a e w nN e 21 56 07 3 12 2005 21 56
3. a R 22 01 00 0 199 3 12 2005 0 135 0 262 a 2 Page 24 of 26 J OW AMP Java Implementation of OWAMP Web Interface D BO BH FG http s 127 0 0 1 jowamp JOWAMP_files JOWAMP_ShowPage php 551 18552 28553 3 amp CI1 1 amp C12 28resultType Y Go e EX http 127 0 0 1 J OWAMP Measurement Platform Mozilla Firefox Pel xi Z a jJ OWAMP Measurement Platform Configuration details for this test session fa Home Logout User ID SenderAddress ReceiverAddress 127 0 0 1 l 127 0 0 1 4181 127 0 0 1 teceiverPo PaddingLength 4 JL StartTime TimeOut s 21 58 0 3 12 2005 10 Individual packet results for this test session sequenceNumber sentTime receivedTime delay ms 0 21 58 00 3 12 2005 21 58 00 3 12 2005 2 2ass 21 58 02 3 12 2005 o 3 __ 21 58 03 3 12 2005 21 58 03 3 12 2005 5 21 58 05 3 12 2005 21 58 05 3 12 2005 0 To see the configuration and the individual packet results of a session click its user ID To see the detailed results of an interval click the corresponding interval number To see the detailed statistic results of a single parameter in a table in a format easier to be copied click the corresponding parameter UserID SenderAddress 127 0 0 1 127 0 0 1 4181 127 0 0 1 21 56 00 0 152 24 621 3 12 2005 0 141 0 164 24 616 24 626 22 01
4. These probes should be active Download Figure 12 this section allows downloading different information related to J OWAMP source code executables etc 4 1 Detailed description of the section Configurations In the Configurations section the user is supposed to introduce the test configurations For both Single Session and Multiple Session the user can define the following configurations Figure 8 and Figure 9 respectively Introduce the number of test packets Default 100 number of test packets to be sent Choose the Sender s address IP address of the machine where the OWAMP Session Sender is installed The IP addresses presented here are registered in the Add Terminal section Choose the Receiver s address IP address of the machine where the OWAMP Session Receiver is installed The IP addresses presented here are registered in the Add Terminal section Note These IPs are automatically tested after the submission of the test session configuration in order to verify if there is connectivity to that machine and if the correspondent OWAMP element is actually installed in the machine with the given IP address Before trying to start a measurement test the J OWAMP interface always verifies if the involved elements Server Sender and Receiver are running This is the same verification process that is executed when registering new terminals see subsection Additional remarks of section 3 In case of error the test sessio
5. section 2 presents the system architecture section 3 shows the J OWAMP Web Interface installation instructions section 4 describes in detail the J OWAMP web interface and section 5 includes the annexed figures Page 4 of 26 J OW AMP Java Implementation of OWAMP Web Interface 2 System architecture The J OWAMP system implements the OWAMP architecture shown in Figure 1 Session Sender Session Receiver Proprietary OWAMP Control OWAMP Test Protocol Proprietary Protocol OWAMP Control Control Client Fetch Client Figure 1 OWAMP architecture The OWAMP architecture is based on two inter dependent protocols the OWAMP Control and the OWAMP Test which can guarantee a complete isolation between client entities and server entities The OWAMP Control is used to begin and end test sessions as well as receive the results of those tests whereas the OWAMP Test protocol is used to allow the exchange of test packets between any two points that belong to the monitored network The proposed architecture includes the following elements Session Sender the sender of the test packets Session Receiver the receiver of the test packets Server the entity that is responsible for the global management of the system It can configure both network terminal elements that are being tested and receive the results of a test session Control Client a terminal system that programs requests for test sessions triggers the b
6. the user has the option to choose which statistics he wants to visualize There are many kinds of statistics to choose average delay packet loss throughput etc Figure 17 For SS sessions if the user chooses the table representation Figure 15 he can click the session user ID to visualize the session s configuration and individual packet results details Figure 16 The table representation Figure 15 has the following statistics The number of packets actually sent For J OWAMP version 1 2 its value is equal to the number of packets configured to be sent For JE OWAMP version Page 13 of 26 J OW AMP Java Implementation of OWAMP Web Interface 2 1 its value is equal or less than the number of packets configured to be sent because if the sending instant of a packet is in the past the packet is not sent The number of packets received its value represents the number of all received packets including the number of duplicated packets and packets that were received before the time out configured for the corresponding test session The absolute delay values in milliseconds minimum average and maximum and the delay variance The time out loss ratio represents the number of packets that were received before the time out configured for the corresponding test session Its value is number of packets received before time out equal to RA oaa _ _ _ number of packets actually sent The not recei
7. StartTime ratio and 904 127 0 0 1 192 168 0 242 4181 192 168 0 242 a 17 20 00 11 12 2005 o o 2 17 25 0011 12 2005 o o Figure 21 Detailed statistic results of a single parameter of a Multiple Sessions test Page 26 of 26
8. click here 2004 draft Sropozal of OWAMP htt To download the code and the users manual click here This tool is an J OWAMP web interface which provides a friendly user interface for J OWAMP implementation With J OWAMP it is possible to accomplish two kinds of test sessions single test sessions and confidence interval test sessions The single test session corresponds to the configuration of one single test between two machines The user can define the number of packets the packet interarrivals the packet length and the start time of the session The results obtained with this type of session are the estimation performance metrics such as mean delay losses duplication and throughput The confidence interval test session allows splitting the complete session period in a number of smaller test intervals and to perform a set of tests in each interval to enable the construction of 90 confidence intervals For example if the session period is set at 24 hours the user can define 24 intervals of one hour duration and define also that in each interval a total of 10 tests should be performed in order to calculate the 90 confidence interval In this case the interval between the start of consecutive session can also be defined say 2 minutes If you need some help please contact H lder Veiga REQUIREMENTS OWAMP requires a synchronized clock for measurements to be meaningful But more importantly the clock needs to be stable I
9. elements from there Those machines must have JRE installed To run these elements use the same steps described above Page 9 of 26 J OWAMP Java Implementation of OWAMP Web Interface 4 J OWAMP Web Interface Description The web interface includes a set of web pages that can be accessed from a single menu Figure 3 and Figure 4 This menu has two levels The first contains the following sections About J OWAMP Configurations Session Results Add Terminal and Download The second level can only be accessed from the first two sections of the first level and includes the following sub sections About J OWAMP About and Details Configurations Single Session and Multiple Sessions About IJ OWAMP Configurations Session Results Add Terminal Download Figure 3 About J OWAMP Menu ssion Results 4dd Terminal Download Figure 4 Configurations Menu This menu allows a user to perform the following operations About J OWAMP allows the visualization of J OWAMP description information About Figure 5 and more detailed information about the OWAMP protocol Details Figure 6 Configurations allows the configuration of tests sessions Single Session Figure 8 and Multiple Session Figure 9 For security reasons these two sub sections require user authentication Figure 7 With J OWAMP it is possible to accomplish two kinds of test sessions single test sessions Single Session and confidence interval test sess
10. friendly web interface to improve its use This web interface can be used with J OWAMP versions 1 2 and 2 1 The J OWAMP version 1 2 implements the May 2004 draft proposal of OWAMP http www internet2 edu shalunov ippm draft ietf ippm owdp 08 txt and the J OWAMP version 2 1 implements the December 2004 draft proposal of OWAMP http www internet2 edu shalunov ippm draft ietf ippm owdp 14 txt The J OWAMP system can be used both in Windows and Linux platforms requiring only the installation of J2SE Java Runtime Environment JRE available in both Windows and Linux versions The installation of this module 1s mandatory in order to allow the execution of Java applications J2SE Java Runtime Environment JRE 5 0 is needed for supporting IPv6 on Microsoft Windows With the J2SDK JRE 1 4 release there is IPv6 support on Linux Note For IPv6 support addresses with scope link local start with FE8 or site local start with FEC shouldn t be used You must also save a MySQL Connector J file http dev mysql com downloads in the lt jre_diretory gt lib ext directory to allow the interaction between J OWAMP and a MySQL database MySQL Connector J is used for connecting to MySQL from Java OWAMP requires a synchronized clock in order to provide meaningful measurements But more importantly the clock needs to be stable If the system clock is stepped during an OWAMP session the results can be misleading OWAMP requires the use of G
11. o oS oO oO m m N N Figure 18 Results representation using graphs Page 23 of 26 J OW AMP Java Implementation of OWAMP Web Interface Nor bttp 127 0 0 1 jowamp JOWAMP_files JOWAMP_ShowPage php 551 18552 28553 3 amp C11 1 amp C12 28resultType Y i Go e amp x 80 http 127 0 0 1 J OWAMP Measurement Platform Mozilla Firefox IOl xi A J OWAMP Measurement Platform Single sessions statistics for the 1 interval of the 1 multiple sessions Home Logout To see the configuration and the individual packet results of a session click its ID 1 21 56 0 3 12 2005 2 21 58 0 3 12 2005 Done di To see the configuration and the individual packet results of a session click its user ID To see the detailed results of an interval click the corresponding interval number To see the detailed statistic results of a single parameter in a table in a format easier to be copied click the corresponding parameter UserID SenderAddress ReceiverAddress Interval StartTime 21 56 00 0 152 3 12 2005 0 141 0 164 127 0 0 1 127 0 0 1 4181 127 0 0 1 127 0 0 1 127 0 0 1 4181 127 0 0 1 21 58 00 0 165 24 621 3 12 2005 0 162 0 168 24 619 24 622 22 03 00 0 163 24 616 3 12 2005 0 046 0 28 24 61 24 621 Figure 19 Single sessions statistics for an interval of a Confidence Interval session
12. 0 2 doesn t have a Session Sender installed or the connection to it is broken version 2 1 Figure 14 Connectivity verification By amp gt amp OD SD IF https 127 0 0 1jowamp JOWAMP_files JOWAMP_ShowPage php 551 18552 28553 3 amp CI1 1 amp C12 26resultType Y Go lia TAER Tar n J OWAMP Measurement Platform uong NETA K Home Logout About J OWAMP Configurations Session Results Add Terminal Download Single session statistics To see the configuration and the individual packet results of a session click its user ID Duplication Throug byte 127 0 0 1 127 0 0 1 4181 127 0 0 1 21 55 0 300 100 llo 0590 26511 843 1 393 0 o o 24 393 0 0 4 127 0 0 1 4181 0 0 e a 059 o 843 1 24 393 127 0 0 1 127 0 0 1 4181 127 0 0 1 21 56 0 1o 10 158 0 356 0 011 0 o o 28 281 127 0 0 1 127 0 0 3 12 2005 159 127 0 0 1 127 0 0 1 4181 127 0 0 1 2115710 10 10 0 134 0 198 0 514 0 014 0 o o 28 283 127 0 0 0 0 1 0 0 ee i UserID SenderAddre ReceiverAddre StartTime J i oe Multiple sessions with confidence intervals statistics To see the configuration and the individual packet results of a session click its user ID To see the detailed results of an interval click the corresponding interval number To see the detailed statistic results of a single parameter in a table in a format easier to be copied click the corresponding parameter UserID
13. 00 0 199 3 12 2005 0 135 0 262 0 0 24 534 24 637 127 0 0 1 127 0 0 1 4181 127 0 0 1 1 Pacer Tere ei et rae Ene Figure 20 Configuration details and individual packet statistics of a single session of an interval of a Confidence Interval session Page 25 of 26 J OW AMP Java Implementation of OWAMP Web Interface E gt 3 3 A AGI bttp 127 0 0 1 jowamp JOWAMP_files JOWAMP_ShowPage php7link JOWAMP_Results php amp CI1 18resultType 1 Go va n i J OWAMP Measurement Platform uong NITYA K Home Logout About J OW AMP Configurations Session Results 4dd Terminal Download Multiple sessions with confidence intervals statistics To see the configuration and the individual packet results of a session click its user ID To see the detailed results of an interval click the corresponding interval number To see the detailed statistic results of a single parameter in a table in a format easier to be copied click the corresponding parameter StartTime 17 20 00 a 11 12 2005 0 0 3 17 25 00 0 184 0 2 11 12 2005 0 121 0 246 0 0 Multiple sessions with confidence intervals statistics To see the configuration and the individual packet results of a session click its user ID To see the detailed results of an interval click the corresponding interval number Average Not Re User ID SenderAddress VeceiverAddress Interval
14. 07 3 12 2005 0 071 21 56 08 3 12 2005 21 56 08 3 12 2005 0 068 21 56 09 3 12 2005 21 56 09 3 12 2005 0 317 oj w D Return Back Site version 2 1 Figure 16 Configuration details and individual packet statistics gt oF 3 A AGI http 127 0 0 1fiowamp JOWAMP_Files JOWAMP_ShowPage php7link JOWAMP_Results php amp CI1 18resultType 0 Go el Paa a J OWAMP Measurement Platform sguro ngi Home Logout About J OWAMP Configurations Session Results Add Terminal Download Choose which confidence interval statistics you want to visualize All Average delay Average timeout loss ratio Average not received loss ratio Average duplication ratio Average throughput Return Back Site version 2 1 Figure 17 Multiple Session confidence interval Page 22 of 26 J OW AMP Java Implementation of OWAMP Web Interface G p B OD amp FS http 127 0 0 1 jowamp JOWAMP_files JOWAMP_ShowPage php averageDelay 18553 3 amp C11 18resultType 0ali Go lic 2 O X Single session results FusionCharts 2 3 Packet delay x Sequence number Results between 127 0 0 1 4181 and 127 0 0 1 Delay ms Sequence Number An InfoSoft Global Creation Multiple sessions with confidence intervals statistics FusionCharts 2 3 Average delay x Start time Results between 127 0 0 1 4181 and 127 0 0 1 0 272 ZF 0 243 z 0 213 E vu S 0 184 a gt 0 154 0 125 w w
15. J OWAMP Web Interface _ Java Implementation of OWAMP User s Manual for versions 1 2 and 2 1 Authors H lder Veiga Jos L Oliveira Rui Valadas Paulo Salvador Antonio Nogueira Affiliation University of Aveiro Institute of Telecommunications Aveiro hveiga av it pt jlo rv det ua pt salvador nogueira av it pt Last updated 15 12 2005 J OW AMP Java Implementation of OWAMP Web Interface Contents t Jntrod cionmandregulemeNiS cessie E EERS 3 2 V SEC MARC N C E aa a A a a aa 5 3 J OWAMP Web Interface Installation Instructions 00eseeeeeneeessseeeeensssssssseeresssss 7 3 1 Linux insala Onean e E 7 Se WiINGOWS AMS AAU omes E E E 8 4 J OWAMP Web Interface Description i ccecccccccccceceeeeseeeeceeeeeeeaaeeeeeeeeeeeeeaaas 10 4 1 Detailed description of the section Configurations cccccccccsssseeseeeeeeeeeaees 11 4 2 Detailed description of the section Session Results ccccccccceceeeessseeeeeeeeees 13 P Ae SC US a a a E E E E 15 Page 2 of 26 J OW AMP Java Implementation of OWAMP Web Interface 1 Introduction and requirements In order to create an innovator platform for active measurements that can also represent a basis for the development and test of new algorithms and models we built a system designated by J OWAMP that stands for Java implementation of OWAMP that corresponds to the analogous of the One Way Active Measurement Protocol OWAMP model and a user
16. PS or NTP to synchronize the system clock The time synchronization accuracy and resolution are some of the most important requirements of OWAMP Better accuracy and resolution can be obtained by using performance counters in conjunction with the system time in order to calculate accurate and smaller time increments To do so a time reference should be defined In any instant the current time can be determined as follows currentTime timeReference currentCounterValue referenceCounterValue counterFrequency The time reference can be defined by using the system time in which case the system should be synchronized or directly from a NTP server J OWAMP allows these two approaches For the second approach J OWAMP includes a NTP client which can be used to get the time reference directly from a NTP server without the requirement of a synchronized clock on the machine hosting JS OWAMP This approach can lead to even better results than the first one On both approaches time reference should be frequently synchronized Therefore an update interval should be defined The NTP server address the update interval and other constants can be defined at the file jowamp JOWAMP_files JOWAMP_Constants php Page 3 of 26 J OWAMP Java Implementation of OWAMP Web Interface To visualize the graphs in the results section the user must install a Flash Player http www macromedia com go getflashplayer The manual is structured in the following way
17. P_Files JOWAMP_ShowPage php link JOWAMP_MultipleSession php eongi J OWAMP Measurement Platform Home Logout About J Ow AMP Configurations Session Results 4dd Terminal Ainwnland J OWAMP Multiple Sessions with confidence intervals Introduce the number of test packets Default 60 60 Choose the Sender s address 2002 c186 5d9b 7 61 e al 1 4 fdf4 42cq iy Choose the Receiver s address 2002 c186 5d9b 7 61 e al 1 4 fdf4 42cq iy Introduce the padding length of the test packets Default 0 0 Introduce the Start Time for this session Year Month Date Hour Minute Second 2005 12 12 0 o o i O i 1 Introduce the timeout in seconds for the test packets Default 10 10 Choose the interarrival time distribution Fixed Exponential Introduce the number of packets Schedule slot descriptions Default 1 1 Introduce the interarrival time parameter in seconds Default 1 1 Introduce the Stop Time for this session Year Month Date 2005 le 13 Hour Minute Second Introduce the interarrival time between sets of tests in minutes Default 60 60 Introduce the number of tests in each set Default 10 10 Introduce the interarrival time between tests in seconds Default 120 1 20 Site version 2 1 Figure 9 Multiple Ses
18. Senders and Receivers addresses Additional remarks Every terminal should be synchronized with each other NTP can be an option but GPS is the better solution The OWAMP_Server should be located in the same machine where the J OWAMP Web Server is installed When registering new terminal the sender IP address should be in the following format Pv4_address TCPportNumber for IPv4 address Pv6_address TCPportNumber for IPv6 address The TCPportNumber is the TCP port to be used in OWAMP Control communication between the Control Client and the respective OWAMP SessionSender The sender s TCP port number corresponds to the port where the sender is waiting for connection requests If the user wants to use the default TCPportNumber 4181 the sender IP address can be in the following format IPv4_address for IPv4 address IPv6_address for IPv6 address i http www php net manual en install windows php Page 8 of 26 J OW AMP Java Implementation of OWAMP Web Interface The receiver address should be in the following format IPv4_address_ for IPv4 address IPv6_address for IPv6 address The TCP port to use in the OWAMP Control communication between the Server and receiver should be defined when running OWAMP_ Server otherwise the default TCP port will be used Note Sender and Receiver address should have the same IP version both Pv4 or IPv6 If one of these addresses sender or receiver is the loopback a
19. SingleSession php x 0 Go E S O TX Tar 7 J OWAMP Measurement Platform euroNngl NET tar Home About J OWAMP Configurations Session Results Add Terminal Downloat Single Session Multiple Sessions Login Email Username Password Site version 2 1 Figure 7 Single Session Authentication Page 16 of 26 J OW AMP Java Implementation of OWAMP Web Interface E D amp OD JF https 127 0 0 1jowamp JOWAMP_files JOWAMP_ShowPage php link JOWAMP_SingleSession php Waa J OWAMP Measurement Platform eurongl Home Logout About J OWAMP Configurations Session Results Add Terminal Download J OWAMP Single Session Introduce the number of test packets Default 100 f 00 Choose the Sender s address 127 0 0 1 gt Choose the Receiver s address 127 0 0 1 Introduce the padding length of the test packets Default 0 fo Introduce the Start Time for this session Year 2005 Month fz Date Boo OO Minute Booo Introduce the timeout in seconds for the test packets Default 10 fi 0 Choose the interarrival time distribution O Fixed Exponential Introduce the number of packets Schedule slot descriptions Default 1 fi Introduce the interarrival time parameter in seconds Default 1 fi Submit Figure 8 Single Session Page 17 of 26 J OW AMP Java Implementation of OWAMP Web Interface lt a 3 A iw http 127 0 0 1 jowamp JOWAM
20. ddress the other should be loopback address too On this registration process IP addresses are automatically tested after being submitted in order to verify if there is connectivity to the machine with that IP address and if the correspondent OWAMP element is conveniently installed To do so the web interface uses the OWAMP ConnectionSetup message It first tries to open a connection to the correspondent element which should respond with a ConnectionSetupServerGreeting If no response is received the element is not registered and an error message is printed If a valid ConnectionSetupServerGreeting message IS received a ConnectionSetupClientResponse message with a mode value not supported by the J OWAMP element is sent to it in order to terminate the connection setup As a result the following error is printed on the window where the corresponding element is running ConnectionSetupServerGreeting to Socket addr 127 0 0 1 port 49616 localport 22368 ConnectionSetupClientResponse from Socket addr 127 0 0 1 port 49616 localport 22368 Error The server doesn t support the mode requested by the client Error Error in processing Connection Setup with client in socket Socket addr 127 0 0 1 port 49616 localport 22368 Therefore this error should be ignored To run the OWAMP_SessionSender and OWAMP_SessionReceiver in other machines you can copy the folder owamp_protocol in jowamp JOWAMP_Files to those machines and then run these
21. e and consisted in sending 60 packets of 24 bytes each minimum test packet size at an average rate of packet second In order to conveniently characterize the packet average delay and packet loss ratio 90 confidence intervals are calculated based on the 10 average values obtained in each test belonging to a group of 10 tests 4 2 Detailed description of the section Session Results The Session Results section is the more complex section In this section the user can choose which representation he wants to use to visualize results graph Figure 18 or table Figure 15 and which type of session those results belong to a Single Session SS and or a Confidence Interval CI session The statistics results are calculated at the first time they are accessed and are saved on the local database of the web server where the J OW AMP web interface is located To visualize the results a user can take one of the following actions Figure 10 To see the configuration details of a session just click its user ID To see the results details of a session choose the result representation Graph or Table on the same row of the corresponding session To see the results details of two or more sessions at the same time select the checkbox of the corresponding sessions and the See Details button located at the end of the page For the graph representation if one of the test sessions selected by the user is of the Multiple Session CI type
22. eginning of a session set and can also finish one or all ongoing sessions Fetch Client a terminal system that triggers the requests for results of test sessions that have already ended or are still running A network element can carry out several logical functions at the same time simplified scenario For example we can have only two network elements one is carrying out the functions corresponding to a Control Client a Fetch Client and a Session Sender and the other one is carrying out the functions corresponding to a Server and a Session Receiver Figure 2 Page 5 of 26 J OW AMP Java Implementation of OWAMP Web Interface Control Client OWAMP Control Fetch Client Session Sender Server Session Receiver OWAMP Test Figure 2 OWAMP simplified architecture The architecture of Figure 1 allows the definition of only one client and one server in the network possibly installed in machines with the highest processing capacity and allows the installation of senders and receivers in any machine of the network which leads to a lower processing impact In this way the network manager can perform tests all over the network from a single machine which is not possible in the simplified scenario Note All machines that are in charge of executing the different applications that compose this measurement system should be precisely synchronized in order to guarantee good measurements results Page 6 of 26 J OWAMP Java Imple
23. f the system clock is stepped during an OWAMP session the results can be misleading OWAMP requires that GPS or NTP are used to synchronize the system clock More details on configuring NTP can be found at http www eecis udel edu mills ntp html notes html J OWAMP requires the J2SE Java Runtime Environment JRE http java sun com j2se 1 5 0 download jsp that allows end users to run Java applications The J2SE Java Runtime Environment JRE 5 0 is needed for IPv6 support on Microsoft Windows With the J2SDK JRE 1 4 release there is IPv6 support on Linux You must also save a MySQL Connector J file http dev mysgl com downloads in the lt jre_diretory gt lib ext directory to allows interaction between J OWAMP and a MySQL database MySQL Connector J is used for connecting to MySQL from Java While testing this tool we used the MySOL Connector J 3 1 version fv Figure 5 About J OWAMP Page 15 of 26 J OW AMP Java Implementation of OWAMP Web Interface G D BO BD JF http 127 0 0 1 jowamp JOWAMP_files JOWAMP_ShowPage php7link JOWAMP_Details php Go lia 8X Pa 3J OWAMP Measurement Platform eurolINgGl fay Home About J OWAMP Configurations Session Results 4dd Terminal Downloat About Details ARCHITECTURE J OWAMP implements the OWAMP architecture shown below The OWAMP architecture is based on two inter dependent protocols OWAMP Control and OWAMP Test that can guarantee complete isolat
24. he interarrival time between test packets the user has to define three parameters Choose the interarrival time distribution e Fixed e Exponential Introduce the number of packets Schedule slot descriptions Default 1 Introduce the interarrival time parameter in seconds Default 1 These three parameters define a group of packets to be sent with the request session Each packet represents a slot So we have a schedule with a given number of slots Each slot has a type and a parameter Two types are supported exponentially distributed pseudo random quantity Exponential and a fixed quantity Fixed The parameter is expressed as a timestamp and specifies a time interval For a Exponential type this interval is the mean value or 1 4 if the distribution density function is expressed as de for positive values of x For a Fixed type the parameter is the delay itself The sender starts with the beginning of the schedule and executes the instructions in the slots for a Exponential type it waits for an exponentially distributed time interval with mean equal to the specified parameter and then it sends a test packet and proceeds to the next slot for a Fixed type it waits for the specified time interval and sends a test packet and proceeds to the next slot The schedule is circular when there are no more slots the sender returns to the first slot For the Multiple Session the user can also define the following configurat
25. http localhost jowamp login register php to register new users Only registered users can configure test sessions Open the page http localhost jowamp jowamp php and use the Add terminal section to add your Senders and Receivers addresses http www php net manual en install unix php Page 7 of 26 J OW AMP Java Implementation of OWAMP Web Interface 3 2 Windows installation In Windows with Apache or IIS and PHP with MySQL support installed we used PHP Version 5 0 4 e Unzip the J OWAMP package to the default Apache or IIS web folder e Install MySQL http dev mysql com downloads and create the user yowamp with password jowamp with all privileges e Install the J2SE Java Runtime Environment JRE http java sun com j2se 1 4 2 download html for Windows e Copy the file mysql connector java 3 1 6 bin to the lt jre_diretory gt lib ext directory This file is located in the jowamp JOWAMP_files auxiliaryFiles folder e Run OWAMP Server OW AMP _SessionSender and OWAMP_SessionReceiver using the executables placed in the jowamp JOWAMP_files owamp_protocol folder For further information on running J OWAMP elements read the J OWAMP user s manual e Ina web browser open the page http localhost jowamp login register php to register new users Only registered users can configure test sessions e Open the page http localhost jowamp jowamp php and use the Add terminal section to add your
26. ion between client entities and server entities The OWAMP Control is used to start and end OWAMP Test sessions as well as receive the results of those tests whereas the OWAMP Test protocol is used to allow the exchange of test packets between any two points that belong to the monitored network The proposed architecture includes the following elernents Figure 1 Session Sender the sending endpoint of an OWAMP Test session Session Receiver the receiving endpoint of an OWAMP Test session Server an end system that manages one or more OWAMP Test sessions is capable of configuring per session state in session endpoints and is capable of returning the results of a test session Control Client an end system that initiates requests for OWAMP Test sessions triggers the start of a set of sessions and may trigger their termination Fetch Client an end system that initiates requests to fetch the results of completed OWAMP Test sessions OWAMP Test Session Sender Session Receiver Control Client Fetch Client Fig 1 OWAMP architecture A network element can carry out several logical functions at the same time For example we can have only two network elements one implementing the Control Client the Fetch Client and the Session Sender and the other implementing the Server and the Session Receiver Figure 2 Figure 6 Details KE 3 E http 127 0 0 1 jowamp JOWAMP_files JOWAMP_ShowPage php link JOWAMP_
27. ions Figure 9 Introduce the Stop Time of this session Introduction of the stop time of the session Year Its value is the current year when configuring the session Month Its value is the number representation of the current month when configuring the session 1 for January Date Its value is the current day of the month when configuring the session Hour Its value is the current hour when configuring the session Minute Its value is the current minute when configuring the session Second Its default value is zero Page 12 of 26 J OW AMP Java Implementation of OWAMP Web Interface Introduce the interarrival time between sets of tests in minutes Default 60 time interval between sets of measurements Introduce the number of tests in each set Default 10 number of test sessions to accomplish in each interval Introduce the interarrival time between tests in seconds Default 120 temporary separation between the beginning instants of each individual test session of a set of tests The number of confidence intervals is automatically calculated after the configuration of the Multiple Sessions s start time stop time and interarrival time between sets of tests For the example on Figure 9 all tests are performed in a 24 hours period In each hour sets of 10 tests are performed making a total of 240 tests In each group the starting time instants of the tests are separated by 2 minutes All tests lasted for 1 minut
28. ions Multiple Session The single test session corresponds to the configuration of one single test between two machines The user can define the number of packets the packet interarrivals the packet length and the start time of the session The results obtained with this type of session are the estimation performance metrics such as mean delay losses duplication and throughput The confidence interval test session allows splitting the complete session period in a number of smaller test intervals and to perform a set of tests in each interval to enable the construction of 90 confidence intervals For example if the session period 1s set at 24 hours the user can define 24 intervals of one hour duration and define also that in each interval a total of 10 tests should be performed in order to calculate the 90 confidence interval In this case the interval between the start of consecutive session can also be defined say 2 minutes To visualize any of the annexed figures just click in the respective name and then click in the corresponding figure to return to origin Page 10 of 26 J OW AMP Java Implementation of OWAMP Web Interface Session Results Figure 10 allows the visualization in tables and graphs of the results of the configured tests sessions and the statistics calculated using these results Add Terminal Figure 11 allows the registration of new OWAMP probes senders and receivers to be used in test sessions
29. mentation of OWAMP Web Interface 3 J OWAMP Web Interface Installation Instructions 3 1 Linux installation In Linux with Apache and PHP with MySQL support installed we used PHP Version 4 3 8 1 Unzip the J OWAMP package to the Wvar www html folder Apache root directory Install MySQL http dev mysql com downloads and create the user jowamp with password jowamp with all privileges Install the J2SE Java Runtime Environment JRE http java sun com j2se 1 4 2 download html for linux use the self extracting file j2re 1_ 4 2 O08 linux 1586 bin 13 72 MB in the var www html folder and rename the folder j2re lt x x x_xx gt to j2re Or change the path to the JRE bin folder in the jJowamp JOWAMP_files execInBackground php file on line exec var www html 2re bin exe args Copy the file mysql connector java 3 1 6 bin to the var www html j2re lib ext directory This file is located in the var www html jowamp JOWAMP_files auxiliaryFiles folder Run OWAMP Server OWAMP SessionSender and OWAMP _SessionReceiver using the following lines in different terminal windows For OWAMP Server cd var www html jowamp JOWAMP_Files owamp_protocol var www html j2re bin java OWAMP_Server Use the same steps for OWAMP SessionSender and OWAMP _SessionReceiver For further information on running J OWAMP elements read the J OWAMP user s manual In a web browser open the page
30. n is not started and the correspondent error is presented on the screen Figure 14 Sender and Receiver address should have the same IP version both IPv4 or IPv6 If one of these addresses sender or receiver is the loopback address the other should be loopback address too The loopback address can only be used if the Control Client and the Server elements are running on the same host Introduce the padding length of the test packets Default 0 additional size in bytes that can be introduced in the test packets by default each test packet has at least 24 bytes Introduce the Start Time of this session Introduction of the start time of the session Year Its value is the current year when configuring the session Month Its value is the number representation of the current month when configuring the session 1 for January Page 11 of 26 J OW AMP Java Implementation of OWAMP Web Interface Date Its value is the current day of the month when configuring the session Hour Its value is the current hour when configuring the session Minute Its value is the current minute when configuring the session plus one for Single Session and the current minute for Multiple Sessions Second Its default value is zero Introduce the timeout in seconds for the test packets Default 10 maximum time interval during which a packet should be received Packets that arrive to Receiver after timeout seconds are considered as lost To choose t
31. plementation of OWAMP Web Interface 5 Annexed figures lt a gt a A be http 127 0 0 1 jowamp jowamp php O X n z J OWAMP Measurement Platform urongi NIETWOS Home Logout bout J OWAMP Configurations Session Results 4dd Terminal Download J OWAMP Measurement Platform The traffic management of IP networks faces increasing challenges due to the occurrence of sudden and deep traffic variations in the network which can be mainly attributed to the large diversity of supported applications and services to the drastic differences in user behaviors and to the complexity of traffic generation and control mechanisms In this context active traffic measurements are particularly important since they allow characterizing essential aspects of network operation namely the quality of service measured in terms of packet delays and losses J OWAMP is a Java implementation of the One Way Active Measurement Protocol OWAMP OWAMP is a recent proposal of the Internet group and is currently being standardized by IETF under the scope of the IPPM group OWAMP is an architecture to perform active measurements of one way delays and losses between hosts The current version of J OWAMP version 2 1 implements the December 2004 draft proposal of O WAMP d oof draft i m owdp 14 txt The previous versions of J OWAMP versions 1 0 and 1 2 implement the May i ippm owdp 08 txt To learn more details on J OWAMP
32. sion Page 18 of 26 J OW AMP Java Implementation of OWAMP Web Interface G BD SD IFS http 127 0 0 1 jowamp JOWAMP_files JOWAMP_ShowPage php link JOWAMP_Results php x O amp lia EX RaR r J OWAMP Measurement Platform urongI Home Logout About J OWAMP Configurations Session Results dd Terminal Download Active measurement results To see the configuration details of a session click its user ID To see the detailed results of a session choose the result representation Graph or Table on the same row of the corresponding session To see the detailed results of two or more sessions at the same time select the checkbox of the corresponding sessions and the See Details button at the end of this page o 127 0 0 1 127 0 0 1 4181 127 0 0 1 ss o 127 0 0 1 127 0 0 1 4181 127 0 0 1 10 21 56 0 3 12 2005 o 127 0 0 1 127 0 0 1 4181 127 0 0 1 10 21 57 0 3 12 2005 o 127 0 0 1 127 0 0 1 4181 127 0 0 1 60 21 56 0 3 12 2005 cI Graph Ta Choose which result representation you want to visualize ce Graph Table Site version 2 1 Figure 10 Session Results 7 gt 3 3 A AGI bttp 127 0 0 1 jowamp JOWAMP_files JOWAMP_ShowPage php7link JOWAMP_RegisterTerminals php P J OWAMP Measurement Platform eurolgl About J OWAMP Configurations Session Results Add Terminal Download Register new terminals Sender Address Receiver Address
33. ved loss ratio represents the number of packets that were sent l number of packets lost on the network and not received Its value is equal to HW __________ __ number of packets actually sent The duplication ratio represents the number of packets that were duplicated by the network their sequence numbers were received more than once Its number of packets duplicated on the network value is equal to AANA number of packets actually sent The throughput represents the throughput generated by J OWAMP Its value iecqualts number of packet actually sent x test packet length last packet sent time first packet sent time For CI sessions if the user chooses the table representation Figure 15 he can take one of the following actions To see the configuration and results details of a session includes all individual packet delays of each single session belonging to each interval just click its user ID To see the results details of an interval click the corresponding interval number Figure 19 and Figure 20 The results details of an interval include Statistical results of each single session of the corresponding interval Figure 19 To see the detailed statistical results of a single parameter delay loss duplication or throughput in a table layout using a format that is easier to copy click the corresponding parameter Figure 21 Page 14 of 26 J OW AMP Java Im
Download Pdf Manuals
Related Search
J OWAMP web interface user`s manual