The IQS-85100G Packet Blazer also supports OTU3/OTU4 bit-error-rate testing (BERT) and ODUmuxing capabilities for 40G/100G transponder and muxponder qualification in network equipment manufacturer
(NEM) labs as well as for optical transport network (OTN)
turn-up in the field. Its FPGA-based architecture ensures rapid and seamless incorporation of updates as the standard is ratified and refined, protecting your testing investment without sacrificing timely support of features and functions.
All existing and newly developed testing capabilities are available via an intuitive graphical user interface (GUI) and through software keys for upgrades. No additional hardware or shipping to manufacturer is required.
Optical Transport Network (OTN) Testing
OTN (ITU-T G.709) is the transport technology of choice for 40G/100G Ethernet traffic over the core network on account of its operation, administration, maintenance and provisioning (OAM&P) capability for troubleshooting and maintenance as well as its forward error correction (FEC) mechanism for performance enhancement.
The IQS-85100G Packet Blazer supports numerous OTN testing capabilities, enabling breakthrough-level qualification of 100G and 40G transponders and muxponders in NEM labs. These capabilities include OTU4 (112 Gbit/s) and OTU3 (43 Gbit/s) full-line-rate testing with OTN framing and FEC testing as per ITU-T G.709, 40G/100G Ethernet mapping over OTU3/OTU4 as well as single and multistage ODU multiplexing.
EXFO’s IQS-85100G Packet Blazer supports ODU0 and ODU multiplexing into ODU4/ODU3, among many other multiplexing schemes, in order to address the growing demand for Ethernet service turn-up and to prove that new 40G/100G circuits are capable of handling all future services.
40G/100G Ethernet Mapping Over OTU3/OTU4
EXFO’s IQS-85100G Packet Blazer offers the 40G/100G Ethernet mapping capability over OTU3/OTU4 through the EoOTN software option. This is a key testing capability that allows NEMs to qualify their 40G/100G transponder development, such as mapping and demapping capabilities as well as client signal timing transparency. It also provides the 40 GigE specific transcoding capability that must to be qualified to ensure that the 40 GigE frame is properly transcoded from 64B/66B to 1024B/1027B and properly mapped into the OTU3 (43G) standard frame.
Thanks to the IQS-85100G’s Packet Blazer, customers can now map 40G/100G Ethernet clients over OTN with different traffic characteristics, run end-to-end BER tests across an OTN and measure the ratio of error bits to the number of sent bits. In this testing configuration, the IQS-85100G Packet Blazer module provides complete analysis of the OTN transport layers, including OTU/ODU/OPU and GMP statistics to ensure proper recovery of the client signal at the receive end. EXFO’s EoOTN testing capability also validates the 40G/100G Ethernet traffic transmission with 100% throughput and ensures that latency does not impact service providers’ service-level agreements (SLAs) with their customers.
The fixed OTN rates, including OTU3 (43 Gbit/s) and OTU4 (112 Gbit/s), among many other OTN rates, provide an efficient transport mechanism for constant bit rate (CBR) clients such as SONET/SDH, Ethernet and Fibre Channel. On the other side, ODUflex provides the ability to create a container that is appropriately sized for the data rate of the client, offering a single manageable entity across the OTN that can be a permanently fixed for CBR clients, or adjusted based on connectivity demand in the network using the generic framing procedure (GFP). ODUflex uses 1.25 Gbit/s tributary time slots (ODTUGk) to create the variable container in which a client signal is mapped and then transported. Using ODUflex in carrier networks brings significant benefits, including higher efficiency for network configuration and bandwidth allocation, and also provides a future-proof solution for transporting any client signal at any rate, when needed.
Ethernet Performance Validation
The Internet Engineering Task Force (IETF) has put together a test methodology to address the issues of performance verification at the layer 2 and 3 levels. RFC 2544, Benchmarking Methodology for Network-Interconnect Devices, specifies the requirements and procedures to test throughput (performance availability), back-to-back frames (link burstability), frame loss (service integrity) and latency (transmission delay)
The IQS-85100G Packet Blazer can perform the RFC 2544 test suite for 40G and 100G Ethernet interfaces at all frame sizes and at full-line rate, allowing service providers to certify that the circuit is efficient and error-free at 100% utilization. It supports automated RFC 2544 testing, which helps ensure repeatable results. In addition, the RFC 2544 testing capability of the IQS-85100G comes with five Smart Loopback modes. So, whether you are looking to pinpoint loopback traffic from a UDP or TCP layer, or all the way down to a completely promiscuous mode (Transparent Loopback mode), it has the flexibility to adjust to all loopback situations.
The unique Smart Loopback capability of the IQS-85100G allows service providers to perform end-to-end testing where the remote unit will return traffic to the local unit by swapping packet overhead up to layer 4 of the OSI stack. In short, this tool allows manufacturers and carriers to ensure optimal performance of 40G/100G optics during lab evaluations.
EtherSAM: ITU-T Y.1564 Ethernet Service Activation
Supported on the IQS-85100G Packet Blazer module for 40G/100G Ethernet client services, this new methodology brings numerous advantages, including validation of critical SLA criteria such as packet jitter and QoS measurements, as well as faster time-to-service. EXFO’s EtherSAM test suite is based on the ITU-T Y.1564 Ethernet service activation methodology, and provides comprehensive field testing capabilities. It can simulate all types of services running on the network and simultaneously qualify all key SLA parameters for each of these services.
Moreover, it validates the QoS mechanisms provisioned in the network in order to prioritize the different service types, resulting in better troubleshooting, more accurate validation and much faster deployment. EtherSAM is comprised of two phases: the service configuration test and the service performance test.
Service Configuration Test
The service configuration test consists of sequentially testing each service to validate that the service is properly provisioned and that all specific KPIs or SLA parameters are met.
Service Performance Test
Once the configuration of each individual service is validated, the service performance test simultaneously validates the quality of all the services over time.
Dual Test Set
Whether the customer is using RFC 2544 or Y.1564 (EtherSAM) for service activation, both tests can be executed in Dual Test Set mode. In this case, two 40G/100G test sets, one designated as local and the other as remote, are used to communicate and independently run tests in each direction. The dual-test-set approach is a more accurate test scenario. In this case, two units perform an asymmetrical SLA measurement, providing test results per direction. This scenario’s main strength is that it quickly pinpoints which direction has not been configured properly or is at fault, while providing performance metrics for each direction.
Results from both directions are sent and displayed on the local unit to ensure that the entire test routine can be completed by a single person in control of a single unit, thus resulting in shorter test time and reduced manpower. This flexibility also guarantees that different units can be set as a remote unit. The most interesting scenario is a centralized unit that is always configured as a remote unit with fixed addresses. The carrier can simply dispatch a single test person to a test site, following which the tester can quickly discover and execute service turn-up and burn-in quickly and efficiently without requiring an extra worker in the central office.
The dual test-set approach also provides the capability to segment the network and quickly pinpoint in which direction issues occur. This is especially important in cases where the bandwidth differs between the upstream and downstream directions. In such instances, using a loopback tool will always yield the same results, because the measurement will be affected by the lowest throughput, and the test results will not reflect that one direction has higher performance than the other. The same scenario will occur if a network misconfiguration is present in only one direction of the service. Depending on the error, the problem will not be identified with round-trip measurements. This often results in customer complaints and additional truck rolls. With the dual test-set approach, both directions are independently analyzed at the same time, and pass/fail results are provided per direction, yielding the highest level of confidence in service testing.
Ethernet Traffic Generation and Monitoring
Data services carried over 40G/100G networks are making a significant shift toward supporting a variety of applications. Multiservice offerings such as triple-play services have fuelled the need for QoS testing to ensure the condition and reliability of each service, as well as qualify SLA parameters. The IQS-85100G Power Blazer, with its traffic generation and monitoring application, allows service providers to simultaneously simulate and qualify different applications. Up to 16 streams can be configured with different Ethernet and IP QoS parameters such as VLAN ID (802.1Q), VLAN priority (802.1p), VLAN stacking (802.1ad Q-in-Q), ToS and DSCP. Traffic simulation also includes traffic shaping with burst and ramp capabilities. The IQS-85100G also simultaneously measures throughput, latency, packet jitter (RFC3393), frame loss and out-of-sequence errors in all streams, yielding a fast and in-depth qualification of all SLA criteria. From there, it is just a matter of tweaking them to each stream. Results are displayed in tabular format as well as on analog visual gauges to ensure that test outcomes are quickly and easily interpreted.
40G SONET/SDH BER Testing
SONET/SDH solutions have been the fundamental basis of optical networks for the better part of the past 20 years, during which they provided the stability and scalability required for data applications. This large installation of SONET/SDH systems still needs to be tested, monitored and properly maintained, along with newly deployed services over OTN and WDM networks. EXFO’s IQS-85100G Packet Blazer Test Module provides advanced 40G OC-768/STM-256 bit-error-rate test (BERT) functionality over 40G serial CFP. This capability includes full flexibility for generation and monitoring of 40G SONET/SDH alarms, errors and overhead bytes at all layers. In addition, the IQS-85100G module supports standard SONET/SDH automatic protection switching (APS), service disruption time (SDT) and round trip delay (RTD) measurements.
CFP Health Check
The IQS-85100G Packet Blazer also offers a 100G CFP Health Check. Unlike the single wavelength transceiver used in legacy 2.5G and 10G networks, each CFP parallel optical channel must be monitored for transmitted and received power levels to avoid damaging expensive 100G circuits and equipment. Moreover, each parallel lane must be monitored for frequency and frequency offset to ensure proper clock and timing recovery.
The CFP information page now provides detailed information on the module, no longer requiring the removal of the CFP to read the CFP module details. Complete management data input/output (MDIO) read/write access has also been given, allowing advanced network engineers to verify the management interface in the CFP through a registered access, as per the CFP Multi-Source Agreement (MSA). For example, access to the MDIO allows the user to read the CFP operational temperature when needed for troubleshooting purposes.
The IQS-85100G also includes a 100G automated stress-test application that covers transmission tolerance tests like static skew measurement, crosstalk, electrical amplitude and pattern dependency. Essentially, all manual interventions have been removed, thus simplifying the CFP qualification process. In short, this tool will allow carriers to ensure the optimal performance of 100G networks during evaluation and deployments.
EXFO’s IQS-85100G Packet Blazer module offers a signal-conditioning tool to characterize the electrical CAUI/XLAUI and physical lanes, as well as troubleshoot electrical-level issues on standard optical interfaces used within 40G/100G systems. This capability provides direct access to amplitude and pre/post-emphasis control of the 10G electrical CAUI/XLAUI lane transmitters, as well as equalization correction at the receivers. The signal-conditioning interface provides access to the electrical parameters, enabling users to better compensate for signal integrity issues or modify specific electrical parameters to observe the effects of stressing the pluggable optical device. By having the ability to modify signal parameters with a wide dynamic range of amplitude, pre-emphasis and equalization controls, CFP manufacturers can evaluate and optimize the performance of their modules.
CFP2 – The Second-Generation High-Speed Transceivers
In today's competitive market, service providers strive to meet their bandwidth requirements by upgrading their networks to higher speeds. Taking this into consideration, network element manufacturers (NEMs) have shifted their 100G development to leverage the second-generation high-speed transceivers known as CFP2s. These new CFP2 transceivers have the significant advantages of being 50% smaller in form factor and saving more than 50% on power consumption when compared to first-generation transceivers (CFPs). They also enable higher port density on high-speed transmission, switching and routing systems required for 100G mass deployments.
EXFO's IQS-85100G Packet Blazer module offers 100G testing capabilities for CFP2 transceivers thanks to the new FTB-85970 CFP-to-CFP2 adapter, which requires no additional high-speed modules. This CFP-to-CFP2 adapter provides the flexibility needed to support the industry's different implementations of 100G transceivers, including the 4 X 25G and 10 x 10G. Customers can therefore have full access to 100G testing capabilities on their lab unit using both CFP and CFP2 transceivers at a fraction of the cost of upgrading their full fleet of test units to dedicated CFP2-based modules. This unique offering on the market ensures a maximum ROI and eliminates the need for multiple test modules.