VIAVI TestCenter mX3 MX3-25GO-S8 8-Port 25G SFP28 Test Module

Single-speed 8-port SFP28 mX3 test module for 25G Ethernet Layer 2–3 testing in TestCenter chassis.

Port density: 8-port SFP28
Media support: 25G: 802.3 by 25GBASE-CR, 25GBASE-CRS, 25GBASE-SR; 10G: 10GBASE-SR, 10G Copper DAC
Auto-negotiation: Auto-Negotiation and Link Training for 25G
FEC options: Clause 74 BASE-R FEC, Clause 91 RS-FEC, and Clause 108 RS-FEC; IEEE 25GBASE CR CL74, CL108, CR-S CL74, SR FEC CL108; 25/50G Consortium 25GBase-R FEC CL74, 25/50G Consortium 25GBase RS-FEC CL91

Datasheet

Overview

VIAVI TestCenter Sub-100G solutions provide Layer 2–3 validation for enterprise, service provider, industrial and data center networks built on sub-100G Ethernet technologies. These networks still rely on sub-100G links for access, aggregation, control-plane and specialized connectivity applications, so they need validation of performance, interoperability, resiliency and long-term operational stability.

The family comes in two forms. Modular chassis-based systems use fX, dX, mX and pX sub-100G test modules. Compact appliance platforms such as M1 and C2 take a range of NIC configurations. Both allow test configurations to scale across enterprise, service provider and data center infrastructures.

The solutions support functional, performance and interoperability validation. They generate and analyze traffic and measure latency, jitter, throughput and packet loss. They also support regression testing after hardware, software and topology changes, and they integrate with other TestCenter hardware from 10MB to 1.6T and with TestCenter Virtual environments.

Key Features

High-density Ethernet testing with dX, fX, mX and pX test modules or M1/C2 appliances with a variety of NIC configurations
Support for regression testing and long-term network lifecycle assurance
Line-rate traffic generation and analysis across large port counts
Precise, repeatable measurement of latency, jitter, throughput and packet loss
Multi-vendor interoperability with standards-aligned network validation
Unified integration with 10MB to 1.6T hardware and TestCenter Virtual environments
Single-speed 25G version of the mX3 8-port SFP28 module
Clause 74 BASE-R FEC, Clause 91 RS-FEC and Clause 108 RS-FEC can be enabled and disabled
Latency measurement with 2.5ns precision and resolution

Specifications

Interfaces

Port density MX3-25GD-S8, MX3-25GO-S8	8-port SFP28
Media support MX3-25GD-S8, MX3-25GO-S8	25G: 802.3 by 25GBASE-CR, 25GBASE-CRS, 25GBASE-SR; 10G: 10GBASE-SR, 10G Copper DAC Support varies by module speed mode
Auto-negotiation MX3-25GD-S8, MX3-25GO-S8	Auto-Negotiation and Link Training for 25G
FEC options MX3-25GD-S8, MX3-25GO-S8	Clause 74 BASE-R FEC, Clause 91 RS-FEC, and Clause 108 RS-FEC; IEEE 25GBASE CR CL74, CL108, CR-S CL74, SR FEC CL108; 25/50G Consortium 25GBase-R FEC CL74, 25/50G Consortium 25GBase RS-FEC CL91
Protocol CPUs MX3-25GD-S8, MX3-25GO-S8	two, multi-core, Intel Xeon Class CPUs Per module
Maximum support speed	25G Only
Maximum ports per slot	8
Maximum ports per SPT-N12U chassis	96
Maximum ports per SPT-N4U chassis	16

Traffic Generation and Analysis

User reservation fX2-1G-S16, MX3-25GD-S8, MX3-25GO-S8	Per-port reservation
Histograms fX2-1G-S16, MX3-25GD-S8, MX3-25GO-S8	Port-level histogram modes for latency, jitter, interarrival time, frame length, sequence run length and sequence difference check
Transmit / receive streams per port MX3-25GD-S8, MX3-25GO-S8	TX/ 64K TX and RX/128K for all speeds
VFDs and variable fields MX3-25GD-S8, MX3-25GO-S8	6 VFDs available for each 512 (25G/10G) stream templates; 8 m route insertion table entries 4m in 25G/10G mode
Scheduler mode support MX3-25GD-S8, MX3-25GO-S8	Port Based; Rate Based; Priority Based; Manual Mode
Frame length range and controls MX3-25GD-S8, MX3-25GO-S8	100% line rate for frames of 58-16383 bytes controlled by fixed, increment, decrement, random and IMIX modes
Statistics MX3-25GD-S8, MX3-25GO-S8	Nearly 50 transmit stats per port reported in real time. Includes L1-3 counters and rates and checksum and CRC errors. Over 40 real-time measurements per stream including advanced sequencing, latency, jitter and data integrity
Capture MX3-25GD-S8, MX3-25GO-S8	512 MB per 25G/10G port Capture software includes sophisticated trigger and filtering controls

Timing and Synchronization

External time sources fX2-1G-S16, MX3-25GD-S8, MX3-25GO-S8	GPS and CDMA-based external time sources are supported; IEEE 1588v2 and NTP packet-based external time sources are supported; TIA/EIA-95B-based external time sources are supported
Line clocking MX3-25GD-S8, MX3-25GO-S8	Stratum-3 rated oscillator is the default time source Modules get their transmit line clocking and timestamping from the control modules on the SPT-N12U and SPT-N4U
Frame time stamp resolution MX3-25GD-S8, MX3-25GO-S8	2.5 ns
Inter-module and inter-chassis time synchronization MX3-25GD-S8, MX3-25GO-S8	Ports in the same chassis are locked to the internal timing source. For separate systems: timing chain synchronization with ±20 ns accuracy; synchronized via GPS or CDMA network; using NTP or PTP packet-based approaches Requires supporting controller version
Transmit clock adjustment MX3-25GD-S8, MX3-25GO-S8	± 100 PPM in 1 PPM increments for each port or each QSFP28 interface for 25G and 10G