is more than just Ethernet

Digital Lightwave 100G solutions - test & verification made easy



OTU-4 is the current highest defined speed for the OTN network.

With a linerate of 112Gb/s the OTU-4 is built around the requirement to transport 100G Base-R over a constant bit rate OPU-4.

The OPU-4 supports a standard ODU multiplexing scheme defined as supporting 2 x ODU3, 10x ODU-2/2e, 40 x ODU-1 or 80 ODU-0 channels.

The OTU-4 is constructed serially at the 112Gb/s rate before being adapted through a multi-lane distribution (MLD) mechanism.

The serial data is divided into 16 byte blocks which are distributed in a round-robin fashion over 20 parallel lanes using the 3rd OA2 byte as a Logical Lane Marker (LLM). CFP based 100G systems are designed to support multiple interfaces which necessitates the need for the 20 logical lanes as an interim before reaching the physical interface.


First generation network equipment will support 10 x 10G electrical lanes as interface while second generation equipment is expected to support 4 x 25G lanes. The 20 OTN logical lanes are remultiplexed back to a 10 or 4 physical lane interface to the CFP.

The designation of the multilane OTU-4 interface indicates the bitrate and the number of physical lanes.

OTL-4.10 indicates an OTU-4 with 10 physical lanes while OTL-4.4 indicates 4 physical lanes. Logical lane to physical lane mappings are assigned in an arbitrary manner, thus requiring the examination of the LLM for reassembly.

In the case of transport network 10 lane operation the LR-4 CFP module contains the gearbox that converts the 10 electrical lanes to 4 optical lanes for transmission.


When defining 100G Ethernet the IEEE added an 802.3 amendment specifying a new multi-lane physical layer.

100Gb/s Ethernet utilizes a 64b/66b line serial interface for the aggregate data which is then distributed in a round robin manner to 20 PCS lanes. During this multilane distribution (MLD) process identifying lane markers are added to each PCS lane.

The Physical Medium Attachment (PMA) operates as an interconnection between the PCS and PMD and includes clock recovery and multiplexing functions.

Two PMA sublayers are used as part of the 100G Attachment Unit Interface (CAUI).

The first PMA prior to the CAUI multiplexes the PCS lanes down into 10 lanes for connection to the CAUI.

The second PMA multiplexes the lanes again to 4 parallel lanes that are used as the PMD layer in a 100G Base-LR implementation.



The NIC is right-sized to your test needs.

Whichever services you need to test, the NIC is configured ready to work for you.

The unique software-based architecture of the NIC enables every unit to be configured with only the functionality needed. As your network evolves support for additional protocols, speeds or mappings can be added with ease.

This ability to react to the latest network standards has kept the NIC at the forefront of transport testing, with 100Gb/s support for OTN and Ethernet just the latest in a long history of technical leadership.


The NIC is the only field-established test platform that can be upgraded to support 100G services.

Network equipment manufacturers, network operators and services companies globally are safe in the knowledge that their existing NIC inventory can be upgraded to support 100G R&D, production, installation and service turn-up activities.

The thousands of NICs deployed around the world since 1999 have been the most upgraded test equipment base ever. From the outset the NIC design has placed emphasis on making it the longest life product available in the test & measurement market.

Leveraging an existing base of NICs through a 100Gb/s upgrade process can save hundreds of thousands of dollars compared to purchasing new inventory.


The NIC is the perfect companion for anyone who needs to test 100Gb/s network circuits or equipment.

The leader in 10Gb/s portable testing for 10 years plus, the NIC is unsurpassed at 100Gbps. Whether for lab, production line, support or field use the NIC is the best tool available for the job.

Easy to use, in-depth test features, built on our existing OTN and Ethernet functionalities enhance the productivity of engineering teams. Key 100Gb/s features such as lane mappings, skew measurement and skew generation are intuitively laid out with comprehensive reports available for all measurements.

NIC configurations supporting 40Gb/s, 10Gb/s and lower speed protocols such as SONET/SDH, Ethernet, Fibre Channel in addition to the 100Gb/s interface means a NIC-equipped engineering team is ready for any challenge at any time.


When you deploy 100Gb/s networks it is essential that you make the most of the assets you have in order to maximize your bottom line.

Deploying cutting-edge technology networks is expensive. In order to remain within budget nothing must delay getting your network up and ready for service.

The NIC remote control test capabilities allow your engineers to escalate issues and get over-the-shoulder support from their colleagues without having to deploy additional human resources to site, maximizing the use of your skilled workforce.

Centrally locating engineering talent makes the most of your skill base. A single technician can run multiple suites of test across the world ensuring you get the most return from your perssonel investment.


The NIC supports built in scripting languages meaning that both portable and rack-mount versions are ideal tools for automated testing

Scripting 100Gb/s test procedures allows for repeatable standardized testing and reporting regardless of who carries it out. Different customers have different priorities so creating automated processes that recognize the various service levels they need delivering will make sure they get the right quality of service every time

Take the guesswork out of 100Gb/s service delivery by setting up standard configuration tests and let the NIC do the work for you.



The NIC meets your test requirements all the way through your product lifecycle.

During product R&D the detailed test facilities of the NIC can be used to verify the operation of new 100Gb/s network equipment or to prove service quality during network modeling.

As the product reaches the production stage the NIC is an essential part of any automated test equipment (ATE) system. The same hardware used during R&D can be redeployed to a the production line in order to reduce production investment or simply add new NIC chassis to the line and build the ATE with the same test equipment proven during product R&D.

For field test, service turn-up and maintenance the NIC is the ideal tool for technicians who need rugged easy-to-use tools that maximize their efficiency.


100Gb/s protocols have their roots within lower speed equivalents.

The NIC was the first field tester for OTN networks and benefits from years of experience in testing OTN, SONET/SDH and Ethernet services.

Using the same product for 100Gb/s provides a consistent user interface and test functionality from 155Mb/s to 100Gb/s and everything in between.

Consistency between generations of transport network simplifies testing 100Gb/s networks, making it just as easy to turn up as 10Gb/s services and reducing the time it takes your staff to become familiar with the requirements of testing 100Gb/s service.


The NIC has risen to the challenge of meeting fast-evolving network standards, adding support for faster speeds, new protocols and complex signal mappings as they are standardized and deployed since the first NIC deployments in 1999.

Protect your investment in 100Gb/s test equipment by making sure that it is able to cope with the demands of tomorrow.

New software features are regularly made available in order to comply with the latest ITU / IEEE specifications. As 100G becomes more readily available and newer technologies are developed the NIC will be able to be upgraded with additional software and hardware to meet the demands of tomorrow.


The NIC provides unbeatable return on investment (ROI). It is the only 100Gb/s capable test set with an existing installed base of thousands of units which can be easily upgraded to support 100Gb/s.

Combining 100Gb/s features with support for other SONET/SDH, PDH, Ethernet and Fibre Channel technologies from 1.5Mb/s to 40Gb/s maximizes the utilization achievable with the product.

The combination of rugged portable design, multiple-user support, automation interfaces and remote control functionality make the product ideal for every aspect of 100Gb/s testing - it is not acceptable in today's world to require a different test set for every role.

Long calibration cycles, free software updates, 24x7 technical support and an ease of use that reduces the need for user training keep the long-term cost of ownership as low as possible.



The Network Information Computer (NIC) is a test instrument for verifying and qualifying the performance of today’s multi-service global communications networks.

With a flexible architecture, the scalable NIC combines in a single platform the multitude of traditional test sets required to install, maintain, and monitor high-speed multi-protocol networks.

Support for speeds from 1.5Mb/s PDH up to 100Gb/s OTN and Ethernet in the latest CSA 4100 module makes the NIC invaluable for testing anything from the core network right out to the edge.

Available in portable and rack-mount configurations the NIC can be used for lab, production and field service roles. Remote multi-user support makes it ideally for centrally managed test systems.

The CSA 4100 100G module tests CFP based multilane SONET/SDH, Ethernet and OTN circuits at 40Gb/s and 100Gb/s.

Find out more about the NIC.


Unframed and framed PCS BERT modes are provided for thorough testing of CFP modules.

BERT tests can be configured to test both 103Gb/s and 112Gb/s bit rates proving the error free performance of todays multi-rate CFP modules.

Individual lanes can be configured with separate PRBS patterns with errors and alarms able to be detected and generated on a per-lane basis.

In Ethernet PCS mode skew can be generated and measured on each lane in addition to measuring loss of block, sync header and lane alignment error conditions proving the correct operation of the Ethernet gearbox.

Find out more about Digital Lightwave 100G test solutions.


The CSA 4100 module for the NIC fully supports OTU-4 testing.

Test functionality includes OTU multiplexing testing, support for payloads including SONET/SDH and Ethernet, overhead configuration and analysis, service disruption and round-trip delay measurement.

Full OTN protocol support is available including multiplexing to the ODU-0 layer, 6 layer TCM monitoring and FEC in accordance with ITU-T G.709.

Multi-lane features include configurable virtual to physical lane mapping with quick lane rotation configuration, measurement and generation of skew across any of the 20 virtual lanes and support for multi-lane specific errors & alarms.

Find out more about Digital Lightwave 100G OTN test solutions.


The NIC supports full line-rate 100G Base-R Ethernet testing.

Traffic generation can be configured with up to 32 traffic streams each of which can be configured with fully independent profiles including MAC address, IP address, class of service, VLAN headers, and Q in Q.

Multi-lane PCS support includes skew generation & measurement across all lanes, PCS error generation & error detection for sync header & alignment errors, and alarms including loss of block loss and loss of alignment marker. Using the PCS test functions the CAUI lanes can be fully verified.

The CSA 4100 100G module tests the 100G network at layers 1, 2 and 3 and includes RFC-2544 benchmark testing for switch performance characterization.

Find out more about Digital Lightwave 100G Ethernet test solutions.