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VeEX eCPRI, User Manual

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6.2.4 eCPRI One Way Latency Measurement

The diagram below shows how eCPRI works with RXT-6000e and RXT-6200 test modules.

eCPRI One Way Latency Measurement

 

 

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eCPRI Testing User Manual D07-00-131P RevA00

Page 14 of 53

Summary of Contents for eCPRI

Page 1: ......

Page 2: ...3 Setup 6 3 1 Test Port Selection 6 3 2 Port Setup 6 3 3 Measurement Settings 6 3 4 eCPRI Tests 6 4 Throughput 6 4 1 Setup 6 4 1 1 Header Settings 6 4 1 2 Traffic Settings Per Stream Configuration 6...

Page 3: ...Capture 6 5 1 Packet Capture Setup 6 5 2 Packet Capture Results 7 0 Warranty and Software 8 0 Product Specifications 9 0 Certification and Declarations 10 0 About VeEX Go back to top eCPRI Testing Us...

Page 4: ...lectronically or otherwise without written permission from VeEX Inc This device uses software either developed by VeEX Inc or licensed by VeEX Inc from third parties The software is confidential and p...

Page 5: ...module Options and features described in this manual may not be available on all software versions and platforms Refer to the latest specification sheet on www veexinc com for a breakdown of availabl...

Page 6: ...figuration process They could create short circuits or damage internal fans Always store test modules by themselves in individual ESD protected packaging with no loose elements like screws or tools Li...

Page 7: ...ow level signals ESD Electrostatic Discharge Sensitive Equipment Test modules could be affected by electrostatic discharge To minimize the risk of damage when replacing or handling test modules make s...

Page 8: ...re information about Basic Operations Home menu Launching Test Applications etc see the test unit s Platform User Manual on www veexinc com Go back to top Go back to TOC eCPRI Testing User Manual D07...

Page 9: ...ities For more information on Utilities and Tools available see the test unit s Platform User Manual on www veexinc com Go back to top Go back to TOC eCPRI Testing User Manual D07 00 131P RevA00 Page...

Page 10: ...service for data and C M traffic With full line rate eCPRI traffic generation capabilities and high accuracy one way latency measurements the eCPRI test application provides the tools necessary to en...

Page 11: ...tion was written with the goal to be generic enough to support scalable rates physical access medium type and air interface technologies eCPRI relies on existing standards for Ethernet IP networking s...

Page 12: ...testing at Layer 2 and Layer 4 Frame sizes from 64 to 1518 bytes and jumbo frames up to 16000 bytes Layer 2 only Configurable Source and Destination MAC Fully configurable IPv4 or IPv6 header UDP Hea...

Page 13: ...6 2 3 eCPRI Data Framing eCPRI Data Framing Go back to top Go back to TOC eCPRI Testing User Manual D07 00 131P RevA00 Page 13 of 53...

Page 14: ...tency Measurement The diagram below shows how eCPRI works with RXT 6000e and RXT 6200 test modules eCPRI One Way Latency Measurement Go back to top Go back to TOC eCPRI Testing User Manual D07 00 131P...

Page 15: ...0G 25G or 25G with RS FEC and then click OK Go back to top Go back to TOC 6 3 2 Port Setup Configure the Test Ports and or Test Interfaces using the Setup menu on the Home page The available configura...

Page 16: ...ould be set to 1PPS external GPS 1PPS or Atomic 1PPS Internal The internal clock has an accuracy of 3 5ppm conforming to G 812 recommendations External 2Mbps 2MHz 1 5Mbps 1 5MHz 10MHz 1PPS RxCLK The c...

Page 17: ...measurements are started by separating or coupling the transmitter and receiver Separated Independent control Start Stop of the transmitter is enabled At the start of the test only the receiver is tur...

Page 18: ...measurements tests are available from the Throughput and Packet Capture options on the Home page Note Actual screens my differ depending on the installed module eCPRI Home page Go back to top Go back...

Page 19: ...rs On the receiver end the traffic is analyzed on a per stream basis as well as a global or aggregate measurement eCPRI Throughput testing at Layer 2 and 4 is supported Throughput can be configured to...

Page 20: ...ee General Throughput Settings Global Configuration for more details Test Layer Select layer to perform the test Layer 2 or 4 Frame Type Layer 2 only Ethernet II DIX named after DEC Intel and Xerox th...

Page 21: ...e Use the default source address of the test set or configure a new or different address Tap the Mac Source button at the bottom to populate the fields with default test port settings For Layer 4 IPv6...

Page 22: ...et by the Priority Code Point PCP a 3 bit field referring to the IEEE 802 1p priority Indicates the frame priority level from 0 lowest to 7 highest used to prioritize different classes of traffic voic...

Page 23: ...onfiguration Layer 4 Go back to top Go back to TOC IP Tab Configures the destination IP address source address and header fields IPv4 IP Type IPv4 IPv6 Source and Destination IP Address The source add...

Page 24: ...0x06 User Defined Throughput Setup IP Address Settings Layer 4 IPv4 Legacy TOS IPv6 IP Type IPv6 Source and Destination IP Address 128 bit fields The source address is fixed to the IP address from th...

Page 25: ...ing to more than one far end unit then ensure the correct MAC IP destination addresses are configured for the respective streams Go back to top Go back to TOC UDP Header Tab Source Port 16 bit fields...

Page 26: ...Tab Select a test pattern that will be encapsulated in the Ethernet frame payload for framed mode For both Layer 2 and 4 the following pattern is available PRBS 2E31 1 147 483 647 bit pattern used for...

Page 27: ...nsidered for test results MAC Destination MAC Source VLAN Ethernet Type DSCP Layer 4 only Protocol Type Layer 4 only IP Destination Layer 4 only IP Source Layer 4 only Destination Port Layer 4 only So...

Page 28: ...e Frame sizes can be from 64 bytes to 1518 bytes in addition to jumbo frames up to 9k bytes Constant Bandwidth Configure the transmit rate for the stream The parameters depend on the Traffic Flow sele...

Page 29: ...s the maximum allowed round trip delay value If the RTD value exceeds the threshold an event is logged with corresponding time stamp Save Histogram Enable Disable SDT Measurement Enable Disable The Se...

Page 30: ...When Pause is selected the unit will transmit a pause frame when the Error Inj button is pressed Behavior How the errors will be injected Single Single Burst or Rate Pause Quanta Field appears when Ty...

Page 31: ...y The summary screen lists the MAC source MAC destination and VLAN information of each stream Tap the appropriate box of each tab to reconfigure the source destination or VLAN information Throughput S...

Page 32: ...Throughput Summary IP List Level 4 Throughput Summary VLAN List Level 4 Throughput Summary MPLS List Level 4 eCPRI Testing User Manual D07 00 131P RevA00 Page 32 of 53...

Page 33: ...hat supports eCPRI testing After configuring test settings on both units start the tests Go back to top Go back to TOC 6 4 2 Throughput Results When the test is first started the screen changes to the...

Page 34: ...ne Rate For example if we transmit 100Mbps on a 1Gbps interface then the utilization value is 10 or 100Mbps of the total link capacity or Line Rate Utilization bps Framed Rate Payload MAC IP Header VL...

Page 35: ...fiber ports only displays the optical level measured by the CFP2 or QSFP transceiver Throughput Results Global Signal Page 1 Throughput Results Global Signal Page 2 eCPRI Testing User Manual D07 00 1...

Page 36: ...es with an invalid Frame Check Sequence FCS IP Checksum Invalid IP Frame Check sequence TCP UDP Checksum Layer 4 only Jabber frames Number of received frames larger than 1518 bytes containing an inval...

Page 37: ...rent service disruption Total Total accumulated duration of the service disruptions Min Max Minimum and maximum duration of the service disruption events No of Occurrences Counter of service disruptio...

Page 38: ...ibution statistics Frames tab The following Frame distribution statistics are displayed in Count and Percentage Received RX frames Total frame Total Test frames VLAN tagged frames Q in Q VLAN stacked...

Page 39: ...thout FCS errors Frame Size tab The following Frame distribution statistics are displayed in Count and Percentage 64 bytes frames 64 127 byte frames 128 255 byte frames 256 511 byte frames 512 1023 by...

Page 40: ...Aggregate Results Summary Framed rate data rate of bytes total of frames associated with each stream Errors Errors associated with each stream Service Disruption Test results for each stream Events E...

Page 41: ...P Checksum Invalid IP Frame Check sequence TCP UDP Checksum Layer 4 only Jabber frames Number of received frames larger than 1518 bytes containing an invalid FCS Runt frames Number of received frames...

Page 42: ...disruption events SDTs No of SDT Violations Number of instances the SDT threshold was met or exceeded Throughput Results Per Stream SDT Go back to top Go back to TOC The Per Stream Events screen displ...

Page 43: ...Throughput Results Per Stream Traffic Go back to top Go back to TOC The Per Stream Delay screen displays the frame delay information pertaining to each stream The Histogram shows the sampling points f...

Page 44: ...ck to top Go back to TOC The Per Stream Rates screen displays the frame rate and data rate pertaining to each stream Tap on either dial to see rate details Throughput Results Per Stream Rates eCPRI Te...

Page 45: ...latform s keypad A window will open giving the option of naming the results file Enter the desired name for the file and tap apply The results will be saved For more information on retrieving saved te...

Page 46: ...number of bytes of that frame 64 128 192 256 Capture Mode Setup Go back to top Go back to TOC Select from the following Filter options eCPRI Mode Mode eCPRI Only traffic frames matching the source and...

Page 47: ...Go back to top Go back to TOC 6 5 2 Packet Capture Results To finish packet capture and manage packet capture results press Stop A message appears showing the number of packets captured and the filena...

Page 48: ...orted and analyzed on PC Wireshark For more information on viewing and exporting files see the RXT 1200 User Manual on www veexinc com The Packet Capture results screen is divided into three parts wit...

Page 49: ...Middle and Lower Sections Frame details Ethernet frame details Go back to top Go back to TOC eCPRI Testing User Manual D07 00 131P RevA00 Page 49 of 53...

Page 50: ...er along with proof of purchase within thirty 30 days of the request by the customer freight prepaid Additionally during the warranty period VeEX Inc will provide without charge to the customer all fi...

Page 51: ...Product Specifications The most recent product specifications for test units can be found on the VeEX web site at www veexinc com Go back to TOC eCPRI Testing User Manual D07 00 131P RevA00 Page 51 of...

Page 52: ...ciation EFTA EN61010 1 For a copy of the CE Declaration of Conformity relating to VeEX products please contact VeEX customer service What is RoHS RoHS is the acronym for Restriction of Hazardous Subst...

Page 53: ...turn up and integrate service verification features across DSL Fiber Optics CATV DOCSIS Mobile backhaul and fronthaul CPRI OBSAI next generation Transport Network Fibre Channel Carrier Metro Ethernet...

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