Products
Protocol Analyzers

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.

Explore PAM4 Adapter Explore PAM4 Adapter
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.

Fibre Channel provides a secure, bi-directional, physical or logical point-to-point, low latency connection between two devices at a time. Like other serial interfaces such as Serial Attached SCSI (SAS), in Fibre Channel data is transmitted over the physical medium in serial fashion as opposed to parallel methods, which are used in SCSI and ATA physical interfaces. Serial transmission enables 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).

A primary use for Fibre Channel is in the transport of block oriented storage traffic in SAN (Storage Area Network) applications. There are also specialized upper layer Fibre Channel protocols that are used in Defense and Avionics applications, to transport video streams for heads-up displays, for example.

Fibre Channel 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 16GbFC and 3-meters at 32GbFC. 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 Direct Attach Copper (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

Fibre Channel is a layered protocol, and is modeled loosely on the OSI model for networks. In the OSI model, and in the case of Fibre Channel, each layer provides specific services and makes the results available to the next layer.  Figure 1 below compares the defined OSI layer to the defined Fibre Channel layers.

OSI Model Fibre Channel
7 - Application  
6 - Presentation  
5 - Session FC-4 Protocol map
4 - Transport FC-3 Services
3 - Network FC-2 Framing
2 – Data Link FC-1 Data Link
1 - Physical FC-0 Physical
Figure 1, OSI Model and Fibre Channel Network Layers

The layers in the table represent different functions and services that exist within the Fibre channel protocol definition. As with the other communication standards, protocol level analysis is often focused at the link layer (FC-2) and above.

Fibre Channel, like any network architecture, transports blocks of application information, called data payloads. Before sending a payload over the physical link, additional Fibre Channel specific control bytes are added to both the start and the end of the payload data. The combination of the control bytes and the payload data is called a frame, which is the basic unit of information in Fibre Channel.

Fibre Channel transfers data through switched or direct point-to-point connections which work by creating session specific connections between the source and destination devices. These connections last only until the transfer is completed and can be temporarily preempted by higher priority transfer requests.

Connections are made on Fibre Channel systems through “interconnect components” such as switches, hubs, and bridges. The ability of Fibre Channel to use different interconnect devices makes it flexible and scalable depending on user needs. A fully switched Fibre Channel network is called a Fabric topology. Fabric topology permits multiple alternative paths to be established between any two ports in the Fabric.

Summary

ibre Channel protocol is designed to support very low latency and high data transfer rates. The currently approved standard supporting up to 32Gb/S is generally referred to as 32GFC. Server virtualization and storage virtualization are broad trends that are driving the need for higher bandwidth. The need for high bandwidth in the network infrastructure is just now beginning to drive the replacement of previous product generations of 4,8 and 16GFC by 32GFC and soon, 64GFC.

Fibre Channel is a good choice for any environment with many servers needing lossless access to centralized storage, computer data centers for example. Because of this, Fiber Channel enjoys over 80% market share as the network interface used in external storage systems such as SAN environments.

 

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.

SierraNet PAM4 Adapters are the latest in the line of industry leading test and measurement tools designed for early adopters of today’s high-speed storage and communications fabrics.  The PAM4 Adapters support examination of a single link of 50Gb Ethernet or a single link of 64G Fibre Channel. There are two hardware options available, one adapter (HSF-TP4M-050-X) for those who need only Ethernet analysis capabilities, and one (HSF-TP4M-064-X) for those customers requiring both Ethernet and Fibre Channel PAM4 analysis. 

The PAM4 Adapters provide engineers 100% recording capabilities for all data-link through complete data payload layers, with accurate and precise decoding enabled in the Net Protocol Suite™ software application.  A wide range of SAN and LAN specific protocols are supported for triggering, capture and analysis operations, among these are Fibre Channel, NVMe-oF™, FC-NVMe™, FCoE, iSCSI, and TCP/IP related traffic.

SierraNet PAM4 Adapters connect to the link or fabric under test via a single pair of SFP28 connectors. The Adapter is then connected to the T/M328 with the Teledyne LeCroy supplied QSFP28 to SFP28 copper fan out cables.  The SierraNet PAM4 Adapters may be used for test on both QSFP and SFP native NIC, Server, or Switch ports interfaces. 

As is the case with existing SierraNet platforms, when used with the PAM4 Adapter, they may be connected via the CrossSync™ application to other Teledyne LeCroy protocol tools to observe traffic across multiple connections to understand how traffic, stimulus, or errors propagate across bridges or adapters.

The Net Protocol Suite utility provides the most advanced triggering and filtering state machines available.  Up to 24 states, with four transitions per state, and multiple trigger, filter, and timer conditions per capture project are standard features.  Advanced triggering enables state specific filtering to eliminate the capture of unwanted traffic, providing users intuitive and easy navigation to the information and events of importance.

Host Requirements: Microsoft® Windows® 10, Windows 8.1, Windows 7, Windows Server 2012, Windows Server 2008R2;    2 GB of RAM; Storage with at least 200 MB of free space for the installation of the software and additional space for recorded data; display with resolution of at least 1024x768 with at least 16-bit color depth; USB 2.0 port and/or 100/1000 Mbps Ethernet network interface. 
  For optimal performance, please refer to our recommended configurations. 
   
Data Rates Supported PAM4 Generated 64G Fibre Channel; and 50Gbps Ethernet
   
Connectivity: A Gigabit (1000Mbps) Ethernet link is recommended for used with the SierraNet analyzers. At minimum the host machine should have either a 100/1000Mbps Ethernet connection to the network or a USB 2.0 port.  If multiple analyzers are daisy chained and connected to the same host machine, one Ethernet connection or one USB port is required for each analyzer.
   
Data Rates Supported: 8, 16  and 32Gb/s Fibre Channel
10/25/40/50/100Gb/s Ethernet
   
Recording Memory Size: Maximum supported by accompanying SierraNet 328 based analyzer platform
   
Host System Interface: USB Type-C
   
Front Panel Indicators/
Connections:
Power LED
Two (2) SFP28 receptacles
   
Rear Panel Connectors: AC Power, QSFP 
   
Included Accessories: USB A to C cable
  DC Power Adapter
  1ea QSFP to 4-SFP fanout cable
   
Cascade and Expansion Capability Up to 2 PAM4 Modules per SierraNet System
   
Dimensions (H x W x D) Chassis:  40 x 108 x 165 mm (1.56” x 4.131” x 6.5”)
   
Weight 0.36 Kg (0.8lb)
   
Power Requirements: 12VDC, 2A Power Brick (included)
   
Environmental Requirements: Operating:  0 to 50C (32 to 122F)
  Non-operating:  -20 to 80C (-4 to 176F
  Humidity:  10 to 90% RH (non-condensing)

 

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