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PacketExpert™ - Multi-Functional Ethernet Test Solution

PacketExpert™ 1G Software Ver 9.2.8 | Download Now!
PacketExpert™ 10G Software Ver 9.1.31 | Download Now!
PacketExpert™ 10GX Software Ver 9.1.31 | Download Now!


The high-speed Ethernet links are widely found in the local area networks, industrial devices and applications, metropolitan area networks, wide area networks, and mission critical networks. Testing network performance of high-speed Ethernet links is challenging and requires specialized test tools. The performance of Ethernet-based networks cannot be evaluated based only on the bit-error-rate (BER) and loopback testing. To quickly pinpoint and report issues, or to fully validate network performance of Ethernet / IP network, the network operators need Ethernet test tools that can capture-packets-of-interest and decode, generate events-driven triggers and actions, multi-stream playback, impairment generation, perform RFC2544 / Y.1564 / RFC6349 tests, Stacked VLAN/MPLS tests, and many others.

Following are GL product offerings in carrier ethernet test tools –

Ethernet Testers

A complete comparison of all PacketExpert™ platforms is available – Click here to download.

PacketExpert™ 10GX PacketExpert™ 10G PacketExpert™ 1G
  • Two Optical 10 Gbps ports (10 Gbps BASE-SR, -LR -ER full-duplex SFP)
  • 2 x 100 Mbps Base-FX optical interface
  • Four Electrical 10/100/1000 Mbps ports (Base-T Electrical) OR Four 1 Gbps Optical (Base-X Optical SFP) – Includes 10 Gbps ports downshift to 1 Gbps
In 10GX platform 1G mode
  • Each port can be either Electrical or Optical.
  • Switch between Electrical to Optical anytime
  • Any combination Electrical/Optical ports is possible
  • All Electrical, All Optical
  • 1 Electrical, 3 Optical
  • 2 Electrical, 2 Optical
  • 3 Electrical, 1 Optical
  • Two 10 Gbps Electrical/Optical ports
  • Switch between Optical to Electrical 10Gbps interface using SFPs anytime
  • Two 10/100/1000 Mbps Electrical/Optical ports
  • 2 x 100 Mbps Base-FX optical interface
  • Offers Handheld PacketExpert™ 10G version of 10G Ethernet/IP Tester (PXG101), with a Tablet PC mounted on PacketExpert™ 10G, which makes this tester suitable for field testing.
  • All 4 ports can be electrical supporting 10/100/1000 Mbps Full Duplex mode
  • 2 of the 4 ports can be optical supporting 1000 Mbps line rate Full Duplex mode


Multiple Functionalities

Almost all PacketExpert™ platforms support multiple functionalities for carrier-grade ethernet testing as listed below.

Our latest launch, PacketExpert™ 10GX, a multi-functional ethernet tester supports all interfaces, functionality and port capacity similar to that of previous PacketExpert™ 10G for comprehensive testing of 10 Gbps /1 Gbps wirespeed Ethernet/IP networks.

The PacketExpert™ 10GX includes two 10/1 Gbps Optical ports, and two 10/100/1000 Mbps Electrical/Optical capable ports.  The 10/1 Gbps Optical ports can be down-shifted to support 1Gbps Electrical ports, thus offering 4 Electrical / 4 Optical 1 Gbps ports for ethernet testing.

The PacketExpert™ 10GX hardware is more compact with reduced power requirements for high performance and adds 12-port user-configurable TTL trigger option as an important enhancement. BERT and Smart Loopback features are available on all (4 ports) 1 Gbps Electrical or Optical ports.

GL also offers high-density mTOP™ Rack and portable mTOP™ Probe variants within which the PacketExpert™ USB pod unit is incorporated. The mTOP™ rack-based variant is a 1U/2U rack mount enclosures within which PacketExpert™ 10GX USB units are stacked to provide high density GigE ports form factor solution for testing GigE switches, routers and network conditions. It is a perfect ethernet test tool for customers who require multi-port testing but are constrained by lab space.

The latest mTOP™ Probe variant is an all-in-one self-contained test instrument within which a single PacketExpert™ USB pod is combined with the PC interfaces into one single box.The comprehensive mTOP™ Probe hardware unit is designed for easier portability and convenient for field testing. For more details on mTOP™ test platforms, refer to Test Tools in Rack Based and Stand-alone Platforms.

With the capability to generate/receive traffic with stacked VLAN (Q-in-Q) and stacked MPLS, PacketExpert™ 10GX finds use in testing a wide range of networks – from testing individual links/switches, testing local Ethernet/IP networks (LAN), end to end testing of Wide Area Networks (WAN), testing Core/MPLS networks, and much more.

With additional licensing (CXN100) enable remote controlling of PacketExpert™ through multiple command-line based clients. Supported clients includes C#, TCL, and Python. The Command line Interface (CLI) architecture allows for programmatic and automated control over all PacketExpert™ platforms from multiple remote clients. Each PacketExpert™ module can accept multiple client connections and offer independent simultaneous execution. The users can access all the aforementioned functionalities remotely via client and MAPS™ CLI Client/Server.


  • Multiport Ethernet Switch Testing
  • Test and verify QoS Parameters of network devices like Switches/Routers etc.
  • End to end testing of network paths for QoS parameters
  • In-depth troubleshooting of the Carrier network in the event of network failures or impairments
  • QoS testing of Triple-play services to ensure that they fully qualify SLA parameters
  • Terrestrial wireless, satellite, and other WAN technologies network validations.
  • Test VoIP network in real-time conditions to verify if it meets the quality requirements before you deploy.
  • Test routers, switches, VoIP handsets, VoIP PBXs, set-top boxes, and VoD servers

Main Features


  • Comprehensive testing of Wirespeed Ethernet/IP networks up to 10 Gbps
  • Available in Portable or Rackmount (mTOP™ enclosure w/ Single Board Computer)
  • Rack-based variants (mTOP™ 1U/2U rackmount enclosures) provide high density GigE ports form factor solution with multiple PacketExpert™ devices.
  • mTOP™ Probe stand-alone units are easily portable and hence are convenient for field testing
  • Control multiple devices from a single GUI, multiplying the number of ports available per system

Ethernet / IP Testing

  • Capable of simultaneous generation /reception of Ethernet to IP traffic at 100% at user-defined or auto-negotiated speed
  • Traffic options lets technicians generate Ethernet to IP frames with user-configurable frame length, and frame size with varying traffic rates
  • User selectable Electrical and/or Optical interface for ports allows mixed technology testing.
  • Wire speed BERT, Smart Loopback, RFC 2544, Record and Playback, ExpertSAM™ (Y.1564), IPNetSim™, IPLinkSim™, PacketBroker, Multi-stream Traffic Generation and Analyzer, and ExpertTCP֭™ (RFC 6349)
  • Layer-wise Testing - BERT, RFC 2544 Testing over Framed Ethernet (Layer2), Stacked MPLS (Layer2.5), IP and UDP. BERT testing is also supported on Layer1.
  • Field upgradable technology allows tester to stay current with industry trend.
  • Support for ARP, Ping, IPv6 etc.
  • Testing with stacked VLAN (Q-in-Q) – up to 3 levels
  • Testing with stacked MPLS, up to 3 levels
  • IP and UDP header checksum validation
  • Ability to define Ethernet, IP and UDP header fields
  • Multi-board support for all the applications

CLI/ API for Automation and Remote Testing

  • Command line Interface (CLI) support to access all the functionalities remotely using TCL (Tool Command Language), Python, C# clients and MAPS™ CLI Client/Server architecture
  • Capability of automation, remote operation, and multi-site connectivity using C#/TCL/Python clients
  • Multiple PacketExpert™ can be controlled remotely from single client application

Wire speed BERT

  • BERT is applicable for Layers 1, Ethernet (Layer2), Stacked VLAN (Q-in-Q), Stacked MPLS (Layer 2.5), IP (Layer3) and UDP (Layer4).
  • Capable of handling full wire speed BERT, in both directions Electrical/Optical ports.
  • Supports industry standards PRBS patterns 2^9-1, 2^11-1, 2^15-1, 2^20-1, 2^23-1, 2^29-1, and 2^31-1, constant patterns like all ones, all zeroes, alt ones-zeroes and user-defined test patterns ranging between 1 to 32 bits.
  • Single as well as constant rate Bit Error and FCS Error Insertion.
  • Optional sequence number insertion allows detecting out-of-sequence packets and packet loss.
  • Support for frame lengths from 64 bytes to Jumbo frames (up to 16000 bytes).
  • User-defined header parameters for MAC, VLAN, MPLS, IP and UDP layers.
  • Multi-device support for wire-speed BERT and simultaneous BERT/Loopback applications


  • Loopback is applicable for Layers 2, 2.5, 3, and 4.
  • Supports both smart loopback (auto layer detection) and user-defined layer-wise loopback capabilities for incoming traffic.
  • Loopback option helps in easy test setup, especially in end-to-end testing, when the other end is in a remote place. In such cases, a PacketExpert™ can be put in constant Loopback at the remote end, and tests can be controlled at the local end.
  • Multi-device support for all port loopback application
  • Smart Loopback method analyses incoming traffic, automatically detects and swaps the Source and Destination Addresses and sends back the traffic on the same port.
  • Layer 1 – Loops back incoming packets as is
  • Ethernet – Swaps Source and Destination MAC addresses before sending back the packet
  • IP – Swaps Source and Destination MAC addresses, IP addresses before sending back the packet.
  • UDP - Swaps Source and Destination MAC addresses, Destination IP addresses, and UDP ports before sending back the packet.


  • RFC 2544 is applicable for Layers 2, 2.5, and 3.
  • Supports Throughput, Latency, Frame Loss, and Back-to-Back performance tests
  • Uni-directional and bi-directional traffic can be generated and transmitted on single or dual Electrical/Optical ports
  • User-defined configuration parameters such as frame size, trial duration, number of trials, etc.
  • Multi-device support for single and dual ports RFC 2544 application

Record and Playback *

  • Optional application on PacketExpert™ platforms
  • Simultaneously transmit and / or capture network traffic at full line rate.
  • Various operating modes such as Record Only mode, Playback Only mode, Record and Playback mode.
  • Internal onboard DDR2/DDR3 memory allows capturing traffic (from both ports) at Wirespeed (10 Gbps/1 Gbps) without packet loss
  • The captured traffic can be transferred to the host PC for offline analysis.
  • Wirespeed Playback of captured playback allows real world conditions to be recreated in lab.
  • Supported file formats are PCAP, NGPCAP (popular wireshark formats), DAT (GL proprietary Raw format), HDL (GL proprietary PacketScan™ format).
  • Continuous capture can be achieved with "Wirespeed filters" to filter in traffic-of-interest, and continuously record on “packets-of-interest” to file on the hard disk.
  • In Record and Playback mode, both playback-from-file and capture-to-file can be done simultaneously at wirespeed
  • Up to 32 filters (16 per port) can be defined based on  protocol headers to capture only “packets-of-interest”

ExpertSAM™ (Y.1564) *

  • Optional application on PacketExpert™ platforms.
  • A single test conducted to validate Ethernet Service Level Agreements (SLAs) as per ITU-T Y.1564 standard
  • ExpertSAM™ is intended for multiservice testing to measure the maximum performance of the DUT or the Network under test. It is aimed at solving the limitations of RFC 2544 test. ExpertSAM™ defines a methodology to test Ethernet-based services to carry a variety of traffic.
  • It supports the two key Y.1564 subtests, the Service Configuration Test (SCT) and the Service Performance Test (SPT).
  • SLA parameters measured include the Throughput, Frame Transfer Delay (FTD), Frame Delay Variations (FDV), and Frame Loss Ratio (FLR) service acceptance criteria to validate the network path under test.
  • Up to 16 streams can be tested with full Wirespeed (10 Gbps/1 Gbps).

PacketBroker *

  • Optional application on PacketExpert™ platforms.
  • Ports can be configured as Passthrough mode (SPAN), or Output mode (DROP).
  • Bi-directional – packets transmitted in both directions are simultaneously processed by the equipment.
  • Allows test tool to be used as a highly precise non-intrusive Wirespeed Ethernet Tap with all the necessary features such as Pass through Tap, Hardware Filtering, Packet Modification, Output aggregation and TTL Triggers.
  • Up to 32 Wire-speed filters (16 per port) allows to capture traffic of interest
  • Each filter match can optionally generate TTL signal on Programmable I/O ports which can be monitored using external oscilloscope device
  • Currently 4 TTL I/O ports are available; with new enhancements up to 12 TTL I/O can be supported on the rack variants. 12-port enhancement supports user-configurable Filter to TTL mapping
  • Modify captured packets to insert useful information such as nanosecond precision timestamp, port number etc., that helps in precise timing and identification of source of traffic
  • Forward the modified packets to the output ports
  • Analyze and decode packet data using packet analysis application - GL’s PacketScan™.

Multi-stream Traffic Generation and Analyzer *


  • Optional application on PacketExpert™ platforms.
  • This application allows PacketExpert™ to be used for end-to-end testing of 1 Gbps and 10 Gbps WAN (Wide Area Network) links.
  • Generate multiple streams of Ethernet UDP/TCP traffic of varying packet length and analyze the loopback traffic.
  • Parameters measured include the Frame Loss, Frame Delay and Frame Delay Variation metrics for each stream.
  • Easily monitor the bandwidth performance using live throughput consolidated graphical view for all the streams (16 streams).

ExpertTCP֭ (RFC 6349) *

  • Optional application with PacketExpert™ platforms
  • Supports RFC 6349 based TCP Throughput test methodology.
  • Performs bi-directional TCP throughput measurements in combination with another unit at the remote location (other end of the network), that acts as the TCP server.
  • Supports testing both Upstream (Client to Server) and Downstream (Server to Client) directions. Simultaneous bi-directional testing/unidirectional testing can be performed.
  • Test conducted in 3 steps:
    • Path MTU Discovery
    • Determine Baseline RTT
    • Conduct TCP Throughput test
  • Up to 8 TCP connections are supported on 1G platform, whereas up to 16 TCP connections are supported on 10G platform.
  • Results are reported for both directions. The server at the remote location is completely controlled by the client side (located locally). User configures both client and server locally, and the results are displayed locally, avoiding the hassles of configuring the test at multiple locations.


  • Optional application only in PXG100 and PXN100 Platforms
  • Allows test tool to be used as a highly precise WAN IP Link emulator
  • IPLinkSim™ supports single 1G/10G full duplex WAN link emulation (IPLinkSim™). Here, the entire incoming traffic flows as a single stream, which can be impaired with various types of impairments. In addition, IPLinkSim™ also supports congestion emulation by generating background traffic.
  • IPNetSim™ is a multi-stream IP WAN (Wide Area Network) 1G/10G full duplex link emulator. For each direction, incoming traffic can be identified into separate user defined streams (up to 16 streams for 1 Gbps pipe and up to 4 streams for 10 Gbps pipe).
  • Simulate real-world network impairments (Bandwidth Throttling, Latency, Jitter, Packet Loss, Packet Reordering, Packet Duplication, Packet Corruption, Congestion Emulation etc).
  • Bidirectional (P1-to-P2/P2-to-P1) streams can be configured symmetrically (identical WAN impairments in both directions) or asymmetrically (different WAN impairments in each direction) independently for each stream.

Statistics and Graphs

  • Real-time results are presented in both tabular as well as graphical format.
  • Detailed test result reports in PDF and CSV file formats.
  • Detailed frame statistics in tabular format for all the ports.
  • Provides various vital measurements such as Bit Error Rate, Bit Error Count, Sync Loss Count, Sync Loss Seconds, and Error Free Seconds.
  • Real time Throughput and Bit Error rate graphs plotted over time for BERT testing.
  • Graphs and Statistics for all the RFC 2544 tests.
  • Port-wise (P1, P2, P3, P4) statistics.
  • Supports pause frame transmission with user defined quanta on each port independently.

Layer-wise Testing

PacketExpert™ 10G/1G provides independent Ethernet/VLAN/MPLS/IP/UDP layer-wise testing at wirespeed. BERT is implemented for all layers. RFC 2544 is applicable for Layers 2, 2.5, and 3, and Loopback is applicable for Layers 2, 3, and 4.

Below is a depiction of the protocol stack that is supported with PacketExpert™.

Layer-wise Testing per OSI model

Buyer's Guide

Please Note: The 'Pxx' in the Item No. refers to the hardware platform on which the software will be running. Therefore, 'Pxx' can either be PXE (1G) or PXG (10G) or PXN (10GX) depending upon the hardware.

Item No. Item Description


PacketExpert™ 10GX
10G option for PXN100
CLI Server for PXN100
PacketExpert™ 10GX – SA (12-Port) 
PacketExpert™ 10GX – SA (24-Port)

PacketExpert™ Wirespeed Record / Playback for PXN100
ExpertSAM™ - for PXN100
PacketBroker™ - for PXN100
Multi-Stream UDP/TCP Traffic Generator and Analyzer – for PXN100
IPNetSim™ Option for PXN100 (1G and 10G) 

Item No. Item Description
PacketExpert™ 10GX
10G option for PXN100
CLI Server for PXN100
PacketExpert™ 10GX – SA (12-Port)
PacketExpert™ 10GX – SA (24-Port)


PacketExpert™ 40/100G (Coming Soon)


PacketExpert™ 10G/1G
CLI Server for PXG100


PacketExpert™ 1G
CLI Server for PXE100
PacketExpert™ - SA (4 ports) 
PacketExpert™ - SA (12 Ports)
PacketExpert™ - SA (24 Ports)

MT001 mTOP 1U Rack Mount Enclosure w/SBC (intel core i3)
MT001E mTOP™ Rack Mount Enclosure w/SBC (intel core i7)
MT002 mTOP 1U Rack Mount Enclosure w/o SBC
MT003 mTOP 2U Rack Mount Enclosure w/SBC
MT004 mTOP 2U Rack Mount Enclosure w/o SBC
MT005 mTOP™ Probe (Portable Stand-alone) (intel core i3)
MT005E mTOP™ Probe (Portable Stand-alone) (intel core i7)
  PacketExpert™ Platforms Software Options


PacketExpert™ Wire speed Record /Playback for PXE100
PacketExpert™ Wirespeed Record / Playback for PXG100
PacketExpert™ Wirespeed Record / Playback for PXN100
PacketExpert™ Wirespeed Record / Playback 40/100G


ExpertSAM™ - for PXE100
ExpertSAM™ - for PXG100

ExpertSAM™ - for PXN100
ExpertSAM™ - for 40G/100G


PacketBroker™ - for PXE100
PacketBroker™ - for PXG100

PacketBroker™ - for PXN100
PacketBroker™ - for 40G/100G


Multi-Stream UDP/TCP Traffic Generator and Analyzer - for PXE100 (up to 12 users)
Multi-Stream UDP/TCP Traffic Generator and Analyzer - 10G/1G (on PXG100) (up to 16 users)
Multi-Stream UDP/TCP Traffic Generator and Analyzer – for PXN100
Multi-Stream UDP/TCP Traffic Generator and Analyzer 40G/100G

IPNetSim™ Option for PXG100 (1G and 10G)
IPNetSim™ Option for PXN100 (1G and 10G)
IPNetSim™ 1G Tablet (* Coming Soon)
IPNetSim™ Handheld (* Coming Soon)
Remote Option (* Coming Soon)
  Related Software




PacketGen™ (includes PacketScan™)


PacketScan™ (Online and Offline)


RTP ToolBox™


IPNetSim™ Handheld  Network Impairment Generator (Coming Soon)
IPNetSim™ Handheld  Remote Option (Coming Soon)


MAPS™ SIP Emulator 
MAPS™ SIP Conformance Test Suite (Test Scripts)
MAPS™ MEGACO Conformance Test Suite (Test Scripts)
MAPS™ MGCP Protocol Emulation with Conformance Test Suite

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