Products
Protocol Analyzers

Ethernet

Ethernet, as the most common communication protocol on the planet, continues to spread into new markets and incorporates new protocols; it presents today’s Ethernet engineers with host of new test and validation challenges. Specifically, the increasing adoption of lossless Ethernet standards like FCoE, RoCE, and NVMf to name a few; increases in the line-rates of Ethernet now up to 100Gb/s; and new physical and logical communications standards to support these technologies and speeds; legacy test tools are outdated and ineffective for Ethernet product developers and the ecosystem. Teledyne LeCroy is addressing these needs by leveraging our extensive experience in high-speed serial data analysis tools currently used by many of the same companies developing products for NAS, SAN, LAN, and other high-speed protocol environments.

Explore Ethernet Explore Ethernet
SierraNet M648  The SierraNet M648 platform provides best in class traffic capture and manipulation for testing application or link characteristics. SierraNet M648 is the latest in the line of industry leading test and measurement tools from Teledyne LeCroy, designed for today’s high-speed storage and communications fabrics. SierraNet M648 supports examination of Ethernet and Fibre Channel links utilizing both Pulse Amplitude Modulation 4 (PAM4) and legacy Non-Return to Zero (NRZ) technologies.
SierraNet T328  The SierraNet T328 system provides 25/50/100Gbp/s Ethernet and Gen 6 (32GFC) Fibre  Channel data capture and protocol verification for developers & protocol  test engineers in LAN, SAN, NAS and other Ethernet and Fibre Channel  applications.  Available with eight SFP28  FlexPorts™ for maximum configuration and utility, the SierraNet T328 offers  world-class protocol analysis capabilities with an easy to use, customizable  hardware & software interface, large capture buffers, and the most advanced  T.A.P4 capture, triggering and filtering capabilities in the  industry.
SierraNet M328  The SierraNet M328™ system provides 25/50/100Gbp/s Ethernet and Gen 6 (32GFC) Fibre Channel data capture and protocol verification for developers & protocol test engineers in LAN, SAN, NAS and other Ethernet and Fibre Channel applications.  Available with eight SFP28 FlexPorts™ for maximum configuration and utility, the SierraNet M328 offers world-class protocol analysis and error injection capabilities with an easy to use, customizable hardware & software interface, large capture buffers, and the most advanced capture, triggering and filtering capabilities in the industry.
SierraNet M328Q  The SierraNet M328Q™ system provides 25/50/100Gbp/s Ethernet and Gen 6 (32G) Fibre Channel data capture and protocol verification for developers & protocol test engineers in LAN, SAN, NAS and other Ethernet and Fibre Channel applications.  Available with two QSFP28 FlexPorts™ for maximum configuration and utility, the SierraNet M328Q offers world-class protocol analysis and error injection capabilities with an easy to use, customizable hardware & software interface, large capture buffers, and the most advanced capture, triggering and filtering capabilities in the industry.
SierraNet M408  The SierraNet M408 is the most cost effective, advanced and fully integrated 10/40Gbps Ethernet and 16G Fibre Channel data capture and protocol verification systems available for developers and protocol test engineers.  The SierraNet M408 supports Ethernet protocol analysis and error injection capabilities in a single platform and provides engineers with 100% recording of all Fibre Channel and Ethernet related traffic at full line rates on all ports while maintaining the link integrity through non-retimed pass-through probe technology
SierraNet M168  The SierraNet M168 is the most cost effective, advanced and fully integrated 10Gbps Ethernet and 16G Fibre Channel data capture and protocol verification systems available for developers and protocol test engineers.  The SierraNet M168 supports Ethernet protocol analysis and error injection capabilities in a single platform and provides engineers with 100% recording of all Fibre Channel and Ethernet related traffic at full line rates on all ports while maintaining the link integrity through non-retimed pass-through probe technology.
PAM4 Adapter  The SierraNet PAM4 Layer 2-7 Analysis Adapter modules and licensed software options enables the SierraNet T/M328 family of Ethernet and Fibre Channel protocol analyzers to capture and analyze 50GbE and 64GFC PAM4 based transactions.  The PAM4 Adapter modules extend the investment of the SierraNet T/M 328 for 25GbE and 32GFC developers by offering Teledyne LeCroy’s best in class signal probing technologies and software functionality.

Ethernet, the most ubiquitous networking technology in the computer industry, has been used for a myriad of communications solutions over the past 20+ years and is the backbone of the Internet, corporate datacenter and enterprise applications, modern telephony infrastructures, and all the associated devices.

The “original” serial communication interface, newer high-speed Ethernet deployments provides a bi-directional, physical or logical, lower latency connection between the user/client and their device(s).  Serial transmissions enable much longer connection distances as compared to parallel transmission methods, because far fewer signal lines are required, thereby reducing noise created by multiple signal lines all switching at the same time (cross talk).

Ethernet has long been the data-communications choice for the corporate network as a reliable interconnectivity solution.  The evolution of speeds as well as multi-vendor networks requires adherence to the IEEE standards for Ethernet and a industry commitment to interoperability testing for standards conformance.

Advancements in storage protocols support and physical transport speeds, and improvements in reduced latency is elevating Ethernet to rival Fibre Channel for support of block oriented storage traffic in SAN (Storage Area Network) applications.

Ethernet relies on direct attached copper (DAC) cabling, however to enable longer distance communications, it is designed to work with either optical fiber physical medium or copper cables in many connector and cable type configurations.  Copper cables are relatively inexpensive, but they are useable only for shorter distances, in the range of 5-meters at 10GbE and ~3-meters at 25GbE. In general, the higher the transmission speed, the shorter the distance that can be reliably supported by copper cable technology.  A variety of copper solutions are available, the most commonly used being DAC cabling in both SFP (Small Form-factor Pluggable) and QSFP (Quad Small Form-factor Pluggable) configurations. SFP and QSFP optical cabling solutions are also available, supporting reliable transmission distances greater than 10 meters, up to about 10 kilometers.

 

 

Architecture

Ethernet is a layered protocol, and typical applications adhere to the OSI model. In the OSI model, each layer provides specific services and makes the results available to the next layer.  Figure 1 below defines OSI layer.

OSI Model
7 - Application
6 - Presentation
5 - Session
4 - Transport
3 - Network
2 – Data Link
1 - Physical
Figure 1, OSI Model Network Layers

The layers in the table represent different functions and services that exist within the Ethernet protocol definition. As with the other communication standards, protocol level analysis is often focused at the Data Link and Network layers and above.

Ethernet architecture transports blocks and/or streams of application information, called data payloads. Before sending a payload over the physical link, additional Ethernet specific control bytes are incorporated to ensure proper delivery and handling of the payload data. The combination of the control bytes and the payload data is the Ethernet frame.