VeEX eCPRI User manual
Table of Contents
1.0 About This User Manual
2.0 Introduction to eCPRI Testing for 10G/25G with RS-FEC
3.0 Safety Information
4.0 Basic Operations
5.0 Utilities
6.0 eCPRI
6.1 eCPRI Testing Overview
6.2 Interface Specifications
6.2.1 Protocol Stack
6.2.2 Key Features
6.2.3 Data Framing
6.2.4 One Way Latency Measurement
6.3 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)
6.4.1.3 General Throughput Settings (Global Configuration)
6.4.1.4 Error/Alarm Injection Settings (Per Stream Configuration)
6.4.1.5 Summary
6.4.1.6 Starting/Stopping a Throughput Test
6.4.2 Throughput Results
6.4.2.1 Global/Aggregate Results
6.4.2.2 Per Stream Results
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1.0 About This User Manual
This user manual is suitable for novice, intermediate, and experienced users and is intended to help you successfully use the
features and capabilities of the various modules for test platforms. It is assumed that you have basic computer experience and skills,
and are familiar with IP and telecommunication concepts, terminology, and safety.
Every effort was made to ensure that the information contained in this manual is accurate. However, information is subject to change
without notice. We accept no responsibility for any errors or omissions. In case of discrepancy, the web version takes precedence
over any printed literature.
(c) Copyright 2019 VeEX Inc. All rights reserved. VeEX, VePAL, and Fiberizer are registered trademarks of VeEX Inc. and/or its
affiliates in the USA and certain other countries. All trademarks or registered trademarks are the property of their respective
companies. No part of this document may be reproduced or transmitted electronically 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 proprietary of VeEX Inc. The software is protected by copyright and contains trade secrets of VeEX Inc. or VeEX's licensors.
The purchaser of this device agrees that it has received a license solely to use the software as embedded in the device, and the
purchaser is prohibited from copying, reverse engineering, decompiling, or disassembling the software.
For more technical resources, visit the VeEX Inc. web site at www.veexinc.com. For assistance or questions related to the use of
this product, call or e-mail our customer care department for customer support. Before contacting our customer care department,
have the product model, serial number, and software version ready. Please locate the serial number on the back of the chassis.
Please provide this number when contacting VeEX customer service.
Customer Care:
Phone: + 1 510 651 0500
E-mail: [email protected]
Website: www.veexinc.com
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2.0 eCPRI Testing for 10G/25G/25G with RS-FEC
eCPRI is designed to comply with the more stringent requirements brought on by 5G standards for fronthaul solutions based on
CPRI/OBSAI. These include:
Increase bandwidth
Bandwidth scalability and flexibility
Low latency
Flexibility in functional split options between Remote Unit (RU) and Centralized Unit (CU)
Note: eCPRI testing availability depends on the test platform and 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
available test modes for each platform and module.
Test Interfaces for eCPRI
10G
25G
25G with RS-FEC Support
Framed Traffic
Layer 2 or Layer 4 traffic
Test Frame Header: Protocol Rev. 1, Configurable C field, Configurable message
Packet Capture and Decode
Line rate packet capture
Full frame capture or truncated
Layer 2, Layer 4, Message Type
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3.0 Safety Information
Safety precautions should be observed during all phases of operation of this instrument. The instrument has been designed to
ensure safe operation however please observe all safety markings and instructions. Do not operate the instrument in the presence
of flammable gases or fumes or any other combustible environment. VeEX Inc. assumes no liability for the customer's failure to
comply with safety precautions and requirements.
Optical Connectors
The test sets display a laser warning icon when the laser source is active to alert the user about a potentially dangerous situation. It
is recommended to:
1. Deactivate the laser before connecting or disconnecting optical cables or patchcords.
2. Never look directly into an optical patchcord or an optical connector interface (SFP+) while the laser is enabled. Even though
optical transceivers are typically fitted with Class 1 lasers, which are considered eye safe, optical radiation for an extended
period can cause irreparable damage to the eyes.
3. Never use a fiber microscope to check the optical connectors when the laser source is active.
Safe Module Handling
While replacing test modules, all work on the open panel must be performed only by suitably qualified personnel who is familiar with
the dangers both to people and to the instrument itself.
Modules are not hot swappable. The platform must be turned off and unplugged from VAC mains when removing or inserting
test modules.
For safety and EMC (Electromagnetic Compatibility), empty module slots must be properly covered with blank panel covers.
Prevent foreign objects from entering the unit, before, during and after module exchange or re-configuration 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).
Lithium-ion Battery Precautions
Lithium-ion (Li-ion) battery packs are compact and offer high capacity and autonomy, which make them ideal for demanding
applications, like providing long lasting power to portable test equipment. For safety reasons, due to their high energy concentration,
these batteries packs and products containing them must be used, charged, handled, and stored properly, according to the
manufacturer’s recommendations.
Li-ion battery packs contain individual Li-ion cells as well as battery monitoring and protection circuitry, sealed in its plastic container
that shall not be disassembled or serviced.
The test set unit's battery pack is also fitted with a safety connector to prevent accidental short circuits and reverse polarity.
Always charge the unit's battery pack inside the test platform battery bay using the AC/DC adapter supplied by VeEX.
Do not charge or use the battery pack if any mechanical damage is suspected (shock, impact, puncture, crack, etc).
Do not continue charging the battery if it does not recharge within the expected charging time
Storage: For long term storage, the battery pack should be stored at 20°C/68°F (room temperature), charged to about 30 to
50% of its capacity. Spare battery packs should be charged and used at least once a year to prevent over-discharge (rotate
them regularly).
It is recommended to charge and use battery packs at least every three months. Battery packs shall not go without recharging
(reconditioning) for more than six months.
After extended storage, battery packs may reach a deep discharge state or enter into sleep mode. For safety reasons, Li-ion
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batteries in deep discharge state may limit the initial charging current (pre-recharge) before starting their regular fast charging
cycle. The pre-charging state may take several hours.
Air transportation of Li-ion batteries is regulated by United Nations' International Air Transportation Association (IATA)
Dangerous Goods Regulations and by country-specific regulations. Please check local regulations and with common carriers
before shipping Li-ion battery packs or products containing relatively large Li-ion battery packs.
Electrical Connectors
Telephone lines may carry dangerous voltages. Always connect the electrical test ports to known test interfaces which carry low
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 sure to follow proper ESD procedures and
dissipate any electrostatic charge from your body and tools and the use proper grounding gear.
Perform all work at a workplace that is protected against electrostatic build-up and
discharging.
Never touch any exposed contacts, printed circuit boards or electronic components.
Always store test modules in ESD protected packaging.
Wear ESD protection and grounding gear when:
Inserting, extracting, or handling test modules.
Inserting or removing SFPs, XFPs, QSFPs, or CFPs from the platform.
Connecting or disconnecting cables from modules or platform.
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6.0 eCPRI
6.1 eCPRI Testing Overview
The Common Public Radio Interface (CPRI) forum introduced a new more stringent Ethernet packet based fronthaul interface,
eCPRI, due to limitations for 5G deployments based on traditional CPRI or OBSAI.
To ensure that 5G network's strict requirements are met in the fronthaul, the eCPRI Transport Network requirement document
establishes classes of 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 ensure that the eCPRI transport network
is ready for 5G deployments.
CPRI Mobile Fronthaul Evolution
This protocol has been developed by Ericsson AB, Huawei Technologies Co. Ltd, NEC Corporation, Alcatel Lucent and Nokia
Siemens. The standard is public and can be downloaded from http://www.cpri.info.
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6.2 Interface Specifications
eCPRI System Architecture Example*
(*eCPRI Interface Specifications ver 1.1)
CPRI Specification 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, synchronization, and security.
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6.2.1 Protocol Stack
eCPRI Protocol Stack*
(*eCPRI Interface Specifications ver 1.2)
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6.2.2 eCPRI Key Features
Key features of eCPRI include:
25G/10G eCPRI (Protocol ver.1)
Ethernet Type: AE-FE (eCPRI)
Configurable C field and message type
Dual-port testing capabilities
RS-FEC support
Multi-stream testing up to 32 independent streams
Each stream can be set with independent frame size, bandwidth, traffic profile, and QoS levels
Throughput 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 Header configurable Source and Destination ports
Q in Q (VLAN stacking up to 3 VLAN tags with configurable priority and type)
MPLS up to 3 labels with configurable Label/S/CoS and TTL
Test Patterns:
PRBS pattern: 231-1, 223-1, 215-1, 211-1
PRBS normal and inverted patterns
All 0s, All 1s, and User Defined
High accuracy One-Way-Delay latency measurement
Line rate packet capture
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6.3 eCPRI Setup
Test mode, test port(s), and network settings are required prior to performing any measurements or applications.
6.3.1 Test Port Selection
Test Mode Selection
This menu is accessed via the Test Port button located at the top left hand side of the screen.
To select the eCPRI test:
1. Click the SFP28/SFP+ Test Port, and then select the eCPRI test mode.
2. Select the test interface type (10G, 25G, or 25G with RS-FEC), and then click OK.
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6.3.2 Port Setup
Configure the Test Ports and/or Test Interfaces using the Setup menu on the Home page. The available configuration settings
depend on the interface selected.
Select the operation mode and the interfaces that will be used to carry out tests. Once the operating mode and interfaces are
selected, the the auto-negotiation, speed, duplex, and flow control settings for each port (where applicable) can be configured.
The figure below shows a 10G Port Setup.
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10G Fiber Port Setup
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Port Setup
Port Profile: Lock, Delete, Save, Save as..., Default, Last configuration
Network Type: LAN
Flow Control: Enable/Disable
When flow control is enabled, the test set will respond to pause frames received by the link partner by adjusting the
transmit rate.
When flow control is disabled, the test set ignores all incoming pause frames from the link partner and continues
transmitting at the configured transmit rate.
Clock Source:
Note: For one-way delay measurements between remote test units, the clock source should 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 clock is derived from the received signal and the jitter of the incoming signal is suppressed.
GPS 1PPS: The optional built-in GPS provides a (raw) 1PPS timing signal (clock) and is aligned to the standard
second.
Atomic 1PPS: The optional built-in Atomic Clock provides a stable 1PPS timing signal.
Clock Offset (ppm): The clock for the transmitter is derived from the internal clock generator.
Frequency offset: +/- 150 ppm with 0.1 ppm resolution.
Link Fault Response: Enable/Disable
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6.3.3 Measurement Settings
10G Measurement Setup
The measurement and event log settings are configured in this screen.
Profile: Last configuration, Delete, Save, Save as..., Default.
Mode: Manual, timed, or auto mode are available.
Manual mode: Starts and stops the measurements manually.
Timed mode: Defines the duration of the test; after the test is started, the test will run for the configured duration and
stop automatically.
TX Start: Separated or Coupled. Configure how the 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
turned on; the transmitter must be turned on manually.
Coupled: Transmitter and receiver are turned on at the same time, and the measurements start at the same time at
the start of the test.
Results Auto Save: ON/OFF. When ON is selected, results are saved automatically.
Maximum Number of Saved Events: 128, 256, 512, 1024. Maximum number of error and alarm events recorded during a
test.
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6.3.4 eCPRI Tests
After setting up test ports and configuring the 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
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6.4 Throughput Testing
6.4.1 Setup
To access Throughput testing features, tap Throughput from the Home menu.
Overview:
This application is very useful in verifying the transport of traffic with different prioritization settings across a network link. The test
helps verify that the network can handle high priority traffic and low priority traffic accordingly.
The Throughput application performs the following measurements:
Throughput performance
Frame Loss analysis
Delay analysis
Frame/Packet arrival analysis
Received Traffic Type analysis
Received Traffic Frame Size analysis.
On the transmit side, the Throughput application currently allows up to 32 streams with its MAC and IP address, VLAN tags (up to
3), bandwidth/rate, frame size, and L2 and/or L4 quality of service (QoS) parameters. 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 use either stress patterns or user defined
test patterns to simulate various conditions. The test layer, frame header, traffic profile, error injection, and control settings of the far-
end device (if applicable) must be configured prior to testing.
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6.4.1.1 Frame Header Settings
The following parameters must be configured prior to performing a Throughput test:
Layer 2:
Test pattern is encapsulated into a valid Ethernet frame with SOF, Preamble, and CRC field
A default or user configured Media Access Control (MAC) address is added to the frame
Layer 4:
A default or user configured Media Access Control (MAC) address is added to the frame.
A default or user configured IP address is added to the frame.
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Header Settings
Throughput Header Settings: Layer 2
Throughput Header Settings: Layer 4
Profile: Load a previously configured test profile or create a new profile from existing settings.
Stream #: Number of stream for which to configure the profile. Use the Prev and Next buttons to change streams.
Note: Use the General tab to configure the total number of streams. See 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, this is the most common frame type today.
VLAN: Off, 1 tag, 2 tags, 3 tags (VLAN stacking is an option for Q-in-Q applications)
MPLS (Layer 4 only): Off, 1 tag, 2 tags, 3 tags
Protocol (Layer 4 only): UDP
eCPRI, DATA, and CRC are selected automatically for Layers 2 and 4. IP is selected automatically for Layer 4 only.
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Table of contents
