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57 

E-mail: [email protected] 

Website:  www.Xtramus.com

 

XTRAMUS TECHNOLOGIES

®

 

7.9.6. Latency Snapshot Test

 

 

Latency Snapshot

 test measures the latency by capturing a certain quantity of frames per stream from a 

starting time point. This test can provide the most magnified view of latency behavior at the DUT's load 
tolerance limits, allowing you to precisely analyze jitter implied in results for the other tests. 

Test method: 

DApps-QoS reads the time the sending port sent the frame (Transmit Time) and the time the receiving port 
recognizes the trigger frame (Receive Timestamp). 
Latency is calculated as: 

Latency = (Receive Times) - (Transmit Time). 

You can set up multiple unicast flows for each port, some unidirectional and some bidirectional, each with a 
different frame size, protocol and scheme for priority routing. The test uses the specified the test duration, a 
start frame size, a step frame size by which to increase the load during the test, and a stop frame size at 
which the test ends.   

The load generated by NuDOG series can be customized with different packet lengths and for specified 
period of times. 

Test Iterations 

Continuous 

Click to activate continuous testing with the same settings. 

Duration (Secs) 

The duration of time (in seconds) for the test. The range for the testing time is 

1~5000

. 

Number of Trials 

The number of times of the test. The range for the number of times of the test is 

1~100

. 

Tx Rate 

The rate of packet transfer. You can also set the load unit in percentage or 
Mbps here. 

Maximum 

Receive 

The maximum limit to receive packets in Mbps/sec. 

 

Содержание DApps-QoS

Страница 1: ...DApps QoS User s Manual USM Ver 1 3 ...

Страница 2: ...in this document is believed to be accurate and reliable However Xtramus Technologies assumes no responsibility or liability for any errors or inaccuracies that may appear in the document Trademarks DApps QoS is a trademark or registered trademark of Xtramus Technologies All other trademarks and registered trademarks are the property of their respective owners Warranty Xtramus Technologies warrant...

Страница 3: ...ating Table of Contents 5 Page 24 change View function figure and descriptions 6 Minor format changes 2012 06 28 1 1 V0 9b010 1 Adding NuDOG 801 description Page 11 15 2 Supporting NuDOG 801 added Page 5 25 26 35 40 3 Adding short long function description Page 48 50 52 54 56 58 2012 09 10 1 2 V0 9b010 1 Deleting the description of DApps QoS supports operation system Windows 2000 Page 5 2015 01 09...

Страница 4: ...ages of NuDOG 101T 17 4 3 NuDOG 101T Applications in Different Modes 17 4 4 NuDOG 101T Interface Ports 19 4 5 NuDOG 101T LED Status 20 5 Installing Uninstalling DApps QoS 21 6 DApps QoS Functions Overview 25 6 1 Starting DApps QoS 25 6 2 DApps QoS Overview 27 7 DApps QoS Functions 28 7 1 Menu Bar 28 7 1 1 File 28 7 1 2 View 29 7 1 3 Language 29 7 1 4 Tool 30 7 1 5 Help 31 7 2 Tool Bar 32 7 3 Syste...

Страница 5: ...table network traffic at receiving port analyze the traffic distribution of packets with different priority received from router or switch and test the performance of Layer 3 Router Switch with QoS function DApps QoS is designed for Xtramus Technologies NuDOG series handheld Ethernet testing devices listed in the table down below Devices Supporting DApps QoS NuDOG 301C NuDOG 801 NuDOG 101T Also pl...

Страница 6: ...with a series of utility software that qualify industrial standards such as RFC 2889 RFC 2544 and QoS With these utilities NuDOG 301C is able to conduct throughput test latency test error filtering test forwarding test and so on Utility software can provide a user friendly interface for different test configurations when setting test parameters and criteria More optional software is available for ...

Страница 7: ...ing errors in transmitted traffic to simulate and test abnormal situations Real time statistics for each port including transmitted received frame for VLAN IPv4 IPv4 fragment IPv4 extension ICMP ARP total bytes packets CRC IPCS error and over and under size frames Utility software with user friendly interface that supports various parameter configurations and meets various test requirements 512Mbi...

Страница 8: ... Network TAP is a method of monitoring network s situation dynamically without interference NuDOG 301C can tap bi directional or uni directional traffic from different sides port A and port B and also provides abundant packet counters In Loopback mode NuDOG 301C resends the incoming streams back to the source NIC Mode In this mode NuDOG 301C simulates network interface card NIC ...

Страница 9: ...s to PC C Power Jack 12V DC Power Jack for connecting external power adapter D Cooling FAN Fan hole with internal fan for ventilation E Diagnostic Port 8 Pin Mini DIN Receptacle Diagnostic Port F Port B SFP Port 1000 Mbps Full Duplex SFP Port B Only one port can be used at the same time G Port B RJ45 Port 10 100 1000 Mbps Half Full RJ45 Port B H Port A SFP Port 1000 Mbps Full Duplex SFP Port A Onl...

Страница 10: ...C SG TAP Green NuDOG 301C is working under Stream Generation Mode Yellow NuDOG 301C is working under TAP Mode OFF NuDOG 301C is working under NIC Network Interface Card mode Capture A B Green Port A B is under Capturing Mode Link ACT Green ON The RJ45 Port is connected to DUT Network Green Blinking NuDOG 301C is transmitting or receiving data Speed Green ON 1000Mbps connection Green Blinking 100Mb...

Страница 11: ...th a series of utility softwares that qualify industrial standards such as RFC 2889 RFC 2544 and QoS With these utilities NuDOG 801 is able to conduct throughput test latency test error filtering test forwarding test and so on Xtramus utility softwares provide a user friendly interface for different test configurations when setting test parameters and criteria More optional softwares are available...

Страница 12: ...ted traffic to simulate and test abnormal situations Real time statistics for each port including transmitted received frame for VLAN IPv4 IPv4 fragment IPv4 extension ICMP ARP total bytes packets CRC IPCS error and over and under size frames Supports IPv6 Utility softwares with user friendly interface that supports various parameter configurations and meets various test requirements 32 Capture Bl...

Страница 13: ...t Network TAP is a method of monitoring network s situation dynamically without interference NuDOG 801 can tap bi directional or uni directional traffic from different sides port A and port B and also provides abundant packet counters In Loopback mode NuDOG 801 resends the incoming streams back to the source NIC Mode In this mode NuDOG 801 simulates network interface card NIC ...

Страница 14: ...mware FPGA when connecting NuDOG 801C to your PC While under TAP mode this mini USB port can also re direct tapped packets to PC C Power Jack 12V DC Power Jack for connecting external power adapter D Cooling FAN Fan hole with internal fan for ventilation E Diagnostic Port 8 Pin Mini DIN Receptacle Diagnostic Port F 10 Gigabit Wirespeed SFP Port 10 Gigabit Wirespeed SFP Port Please note that when c...

Страница 15: ...g Power is ON and working properly Yellow Blinking System failed USB Green Blinking USB of this device is linked to PC Error Loss Yellow Blinking CRC error or packet loss is occurring OFF No CRC error or packet loss is occurring Link ACT Green ON The RJ45 Port is connected to DUT Network Green Blinking NuDOG 801 is transmitting or receiving data ...

Страница 16: ...ries of utility softwares that qualify industrial standards such as RFC 2889 RFC 2544 and QoS With these utilities NuDOG 101T is able to conduct throughput test latency test error filtering test forwarding test and so on These utility softwares provide a user friendly interface for making different test configurations and setting test parameters and criteria More optional softwares are available f...

Страница 17: ...f the tests Injecting errors in transmitted traffic to simulate and test abnormal situations Real time statistics for each port including transmitted received frame for VLAN IPv4 IPv4 fragment IPv4 extension ICMP ARP total bytes packets CRC IPCS error and over and under size frames User friendly interface that supports various parameter configurations and meets various test requirements 256Mbits p...

Страница 18: ... Network TAP is a method of monitoring network s situation dynamically without interference NuDOG 101T can tap bi directional or uni directional traffic from different sides port A and port B and also provides abundant packet counters In Loopback mode NuDOG 101T resends the incoming streams back to the source NIC Mode In this mode NuDOG 101T simulates network interface card NIC ...

Страница 19: ...AMUS TECHNOLOGIES 4 4 NuDOG 101T Interface Ports NuDOG 101T Hardware Overview A Mini USB Port for connecting NuDOG 101T to PC or for power supply B LEDs that display NuDOG 101T s system status C Interface Port A B for connecting NuDOG 101T to DUT or network ...

Страница 20: ... is linked to PC PG TAP Green NuDOG 101T is working under Packet Generation Mode Yellow NuDOG 101T is working under TAP Mode OFF NuDOG 101T is working under NIC Network Interface Card mode Capture A B Green Port A B is under Capturing Mode Link ACT Green ON The RJ45 Port is connected to DUT Network Green Blinking NuDOG 101T is transmitting or receiving data Speed Green ON 100Mbps connection OFF 10...

Страница 21: ...uble click DApps QoS installation program and start the installation process 2 InstallShield Wizard is starting to install DApps QoS If you would like to cancel installation click Cancel 3 Click Next to continue installation Note Due to different Operating Systems or system settings warning messages might pop up when installing DApps QoS or driver for your device When this occurs please choose the...

Страница 22: ...ling DApps QoS 4 Click I accept the terms in the license agreement and click Next to continue 5 You can input User Name and Organization in the related fields Click Next to continue 6 DApps QoS InstallShield Wizard will start installing momentarily Click Install button to continue ...

Страница 23: ...3 E mail sales xtramus com Website www Xtramus com XTRAMUS TECHNOLOGIES Installing DApps QoS 7 InstallShield Wizard is installing DApps QoS 8 DApps QoS installation completes Click Finish button to exit ...

Страница 24: ... Website www Xtramus com XTRAMUS TECHNOLOGIES You can uninstall DApps QoS by Uninstalling DApps QoS Click Start All Programs Xtramus DApps QoS Uninstall DApps QoS Go to the Control Panel choose DApps QoS and uninstall the program ...

Страница 25: ...your PC and NuDOG 301C NuDOG 801 NuDOG 101T shall be connected properly The figure down below illustrates connecting PC and NuDOG 301C You can connect NuDOG 801 NuDOG 101T with PC in the same manner There are two ways to start DApps QoS Starting DApps QoS Click Start All Programs Xtramus DApps QoS Double click DApps QoS icon located on your PC s desktop ...

Страница 26: ...emo Mode If your PC is not connected with NuDOG 301C NuDOG 101T you can still run DApps QoS under Demo Mode Almost all DApps QoS s functions are available under Demo Mode However please note that Demo Mode is for system demo purposes only and does not serve any testing purposes at all ...

Страница 27: ...ystem information making test configurations or view test reports on the right side Main Display Screen D Elapsed Time The Elapsed Time field displays the elapsed time during test E Description The Description field display brief descriptions regarding to tests F Status Bar The Status Bar shows the running status of DApps QoS G Control Buttons Test Running Status Icon The Control Buttons allow you...

Страница 28: ...t of xml Save The Save function on the Menu Bar allow you to save the settings you ve made To save the settings you ve made choose Save from the Menu Bar before performing any tests and choose the file path where you would like to save the configuration file Configuration files are saved in the format of xml Set Report Save path to To save the test results choose File Set Report Save Path to from ...

Страница 29: ... TECHNOLOGIES 7 1 2 View View Module Info This function is temporarily unavailable to use 7 1 3 Language Language English By default the DApps QoS s UI illustration language is based on English There are no other language options for the users to choose by now ...

Страница 30: ...ut If the time in seconds DApps QoS spent for auto negotiation exceeds the time you set here the test will stop Learning Learning Mode There s 3 options for Learning Mode choose Never to block learning function choose Once to learn at the first test trial and choose every trial to learn at every test trial Learning Retry The value set here will be the number of learning packets that will be sent t...

Страница 31: ...op up and show detailed system information System Requirements A System Requirements window will pop up and show the requirements for your PC and the FPGA Firmware of the module OK Click this button to exit the System Requirements pop up window Xtramus Web Open your default web browser and access Xtramus Website www xtramus com ...

Страница 32: ... Press Reconnect button to re establish the connection between your PC and NuDOG 301C NuDOG 101T If the connection has been established successfully a message window will pop up and the System Connection Status will be shown as Connected Open If you have a previously saved configuration setting file stored in your PC you can load it and apply all the setting you ve made by clicking the Open button...

Страница 33: ...to make settings for the module ports Settings such as port transmitting rate and auto negotiation are available and can be set here For more detail description about Port Configuration please refer to 6 8 Port Configuration Test Configuration By clicking the Test Config button the Test Configuration screen will be shown on the Main Display Screen located on the right side of DApps QoS main window...

Страница 34: ...com XTRAMUS TECHNOLOGIES Report The Report button allows you to view test results charts and statistics on the Main Display Screen located on the right side of DApps QoS main window For more detail description about Report please refer to 6 10 Report ...

Страница 35: ...ormation screen will be shown on the Main Display Screen located on the right side of DApps QoS main window Port Configuration By clicking the Port Configuration on the System Info Port Configuration List the Port Configuration screen will be shown on the Main Display Screen located on the right side of DApps QoS main window Port Settings such as port transmitting rate and auto negotiation are ava...

Страница 36: ...36 E mail sales xtramus com Website www Xtramus com XTRAMUS TECHNOLOGIES ...

Страница 37: ... and 6 different test modes here including Throughput Packet Loss Latency Latency Overtime Latency Snapshot and Jitter For more detail description about Test Configuration please refer to 7 9 Test Configuration Report The Report on the System Info Port Configuration List allows you to view test results charts and statistics on the Main Display Screen located on the right side of DApps QoS main win...

Страница 38: ...tramus com Website www Xtramus com XTRAMUS TECHNOLOGIES 7 5 Description The Description displays brief descriptions of Quality of service QoS Throughput Packet Loss Latency Latency Overtime Latency Snapshot Jitter tests ...

Страница 39: ...ar shows the running status of DApps QoS 7 7 Control Buttons Test Running Status Icon The Control Buttons allow you to start stop tests and the Test Running Status Icon indicates if there s a test running Control Buttons Start test Stop test Test Running Status Icon No Test is running Test is running ...

Страница 40: ...iation are available and can be configured on the Port Configuration displayed on the Main Display Screen And you can set the protocols and contents of the packet There are two ways to access Port Config Accessing Port Config Click Port Config located on System Info Port Configuration List Click the Port Config button located on Quick Launch Buttons ...

Страница 41: ...DOG 101T Test Port Port A B Card Type This field lists the model name of the test device Streams Click the Setting button in the column Then a Stream Setting window will pop up shown as the picture down below You can set the stream number of the port and the SMAC DMAC here by double clicking the column Alias You can input alias for identifying active ports here in these fields Speed The Speed scro...

Страница 42: ...l Port No This field lists NuDOG 301C NuDOG 801 NuDOG 101T Test Port Port A B Port MAC This field displays the MAC address of the test port Pattern Click this column and you can set the content of the packet from the scroll down in this filed VLAN Enable You can choose Enable or Disable from the scroll down menu to decide whether to add VLAN tag in the packet Protocol Select the protocols of layer...

Страница 43: ...air Throughput Packet Loss Latency Latency Overtime Latency Snapshot and Jitter can be configured on the Test Configuration displayed on the Main Display Screen There are two ways to access Test Config Accessing Test Config Click Test Config located on System Info Configuration List Click the Test Config button located on Quick Launch Buttons ...

Страница 44: ...guration contains 7 different sets of settings Port Pair Throughput Packet Loss Latency Latency Overtime Latency Snapshot and Jitter which can be accessed by clicking the test you would like to perform on System Info Configuration List or the tab menu located on Test Configuration screen ...

Страница 45: ...OLOGIES Assigning Source Port and Destination Port for DApps QoS Before making any test configurations on the Test Configuration screen you have to assign the Source Port and Destination Port for DApps QoS first Please see the description down below for more details ...

Страница 46: ...s for the NuDOG series when the source port is Port A the destination port is automatically set to Port B or vice versa Distribution This function is set to Pair by default and unable to change Pair means Port A to Port B or conversely Orientation Set the data transmission direction between the source port and the destination port Single the data will be transmitted from the source port to the des...

Страница 47: ...s in a determined time gap Jitter Measures the undesired deviation from true periodicity of an assumed periodic signal To start performing tests with DApps QoS please check the check box in front of the test you would like to perform first Unchecked tests will not be performed and cannot access their reports as well during or after the tests You can access setting options for the tests you would l...

Страница 48: ...the test finds the maximum transmission rate at which the DUT can forward traffic for existing flows and or groups During the test the transmission rate changes within a user specified range depending on whether the current rate passed or failed If a single frame is dropped or if loss exceeds the acceptable loss rate specified the test fails and the test stops or is repeated at a lower load depend...

Страница 49: ...ing Default button Click OK button to save the settings or Cancel to exit the window without saving the settings By clicking on the button you will be allowed to choose between Short long function or customize the size of each packet If you choose the Short long function then during the selected step the packet will be sent by a cycle of 64 and 1518 bytes Packet Payload This scroll down menu allow...

Страница 50: ...the test ends During the test these values determine the overall duration for which the DUT is tested DApps QoS calculates frame loss as Frame Loss Number of Frames Transmitted Number of Frames Received For each specified load percentage the test progresses through these stages 1 DApps QoS first sends a frame burst at the specified start frame size for the specified period of time 2 After all fram...

Страница 51: ...s for the test The range for the testing time is 1 5000 Number of Trials The number of times of the test The range for the number of times of the test is 1 100 Tx Rate The rate of packet transfer You can also set the load unit in percentage or Mbps here Maximum Receive The maximum limit to receive packets in Mbps sec ...

Страница 52: ...et manually by enabling Custom function and clicking the Edit button A Packet Size Customization window will pop up You can customize the Frame Size on this window or reset all custom settings by clicking Default button Click OK button to save the settings or Cancel to exit the window without saving the settings By clicking on the button you will be allowed to choose between Short long function or...

Страница 53: ...e the sending port sent the frame Transmit Time and the time the receiving port recognizes the trigger frame Receive Timestamp Latency is calculated as Latency Receive Time Transmit Time You can set up multiple unicast flows for each port some unidirectional and some bi directional each with a different frame size protocol and scheme for priority routing The load generated by the NuDOG series can ...

Страница 54: ...et manually by enabling Custom function and clicking the Edit button A Packet Size Customization window will pop up You can customize the Frame Size on this window or reset all custom settings by clicking Default button Click OK button to save the settings or Cancel to exit the window without saving the settings By clicking on the button you will be allowed to choose between Short long function or...

Страница 55: ...ultiple unicast flows for each port some unidirectional and some bidirectional each with a different frame size protocol and scheme for priority routing The test uses the specified test duration a starting percentage load based on the wire rate or a step frame size by which to increase the load during the test and a frame size at which the test ends During the test these values determine the durat...

Страница 56: ...Edit button A Packet Size Customization window will pop up You can customize the Frame Size on this window or reset all custom settings by clicking Default button Click OK button to save the settings or Cancel to exit the window without saving the settings By clicking on the button you will be allowed to choose between Short long function or customize the size of each packet If you choose the Shor...

Страница 57: ...r each port some unidirectional and some bidirectional each with a different frame size protocol and scheme for priority routing The test uses the specified the test duration a start frame size a step frame size by which to increase the load during the test and a stop frame size at which the test ends The load generated by NuDOG series can be customized with different packet lengths and for specif...

Страница 58: ...n window will pop up You can customize the Frame Size on this window or reset all custom settings by clicking Default button Click OK button to save the settings or Cancel to exit the window without saving the settings By clicking on the button you will be allowed to choose between Short long function or customize the size of each packet If you choose the Short long function then during the select...

Страница 59: ...he sequence tracking number in each frame to determine if frames were received in sequence The load generated by NuDOG series can be customized with different packet lengths and for specified period of times Test Iterations Continuous Click to activate continuous testing with the same settings Duration Secs The duration of time in seconds for the test The range for the testing time is 1 5000 Numbe...

Страница 60: ...et manually by enabling Custom function and clicking the Edit button A Packet Size Customization window will pop up You can customize the Frame Size on this window or reset all custom settings by clicking Default button Click OK button to save the settings or Cancel to exit the window without saving the settings By clicking on the button you will be allowed to choose between Short long function or...

Страница 61: ...Info Configuration List Click the Report button located on Quick Launch Buttons During the test charts or statics table for results of each test Throughput Packet Loss Latency Latency Overtime Latency Snapshop Jitter will be displayed on the Main Display Screen DApps QoS will switch testing table of each test automatically when finishing the current test and starting the next test Please note that...

Страница 62: ...you want to check the report from the scroll down menu B Frame Size Display the packet sizes used in the test C Summary to PDF Export the summary report of the test into PDF format D Stream Info Display the detailed test data of each stream E Result Chart Display the test result in a chart format for a more intuitive perception F Port Test Info Display the test ports and the name of the test ...

Страница 63: ...by choosing from the scroll on the Counter option shown on the figure down below Frame size Throughput Test Report Packet Loss Test Report This chart uses Rx packet quantity as Y axis and Frame Size as X axis to show DUT s throughput performance This chart uses Packet Loss Rate as Y axis and Frame Count per Second as X axis to show DUT s packet loss ratio ...

Страница 64: ...onds μs as Y axis and time in seconds as X axis Latency Snapshot Test Report Jitter Test Report This chart uses Latency in Microseconds μs as Y axis and time in seconds as X axis This chart uses Jitter in Microseconds μs as Y axis and time in seconds as X axis Also you can view test results counter by clicking the Report tab as shown on the figure down below All statistics will be displayed in thi...

Страница 65: ...les xtramus com Website www Xtramus com XTRAMUS TECHNOLOGIES You can save the test results by Saving Test Results Click File Save Report Save Path to on your Menu Bar Click Save Report on your Quick Launch Buttons ...

Страница 66: ...ade functions NuDOG 301 NuDOG 801 NuDOG 101T C can also be used as a network interface card With control software and NuDOG 301 NuDOG 801 NuDOG 101T s hardware conversion network data streams can flow between NuDOG 301C NuDOG 801 NuDOG 101T s USB and network port DApps 2544 Test Suit Based on RFC 2544 DApps 2544 is a user friendly and automatic test suite based on industry standard RFC 2544 It gen...

Страница 67: ...ntained in this document are subject to change without notice All products and company names are trademarks of their respective corporations Copyright 2015 Xtramus Technologies all rights reserved Do not reproduce redistribute or repost without written permission from Xtramus Doc USM_DApps QoS_V1 3_ENG _20150109 ...

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