Ethernet Testing Software

OverviewGL's enhanced PacketCheck™ is a comprehensive PC based Ethernet / IP test tool with BERT and Throughput testing abilities. It is a general purpose network performance analysis tool for 10Mbps, 100Mbps and 1Gbps LANs and WANs. Throughput up to 800 Mbps can be easily tested.PacketCheck™ makes use of PC's network interface card (NIC) to transmit and receive Ethernet or IP packets over the network.The application generates multi stream Ethernet/IP/UDP traffic with on-demand bandwidth (up to 800 Mbps) and measures end to end performance such as Bit Error Rate, Total Packets, Packet loss, Out of Sequence Packets, and Erred Packets.

Additional features include transmission of pre-recorded file traffic, GTP traffic simulation, Bursty and Fixed IFG (Inter Frame Gap) traffic generation mode, Delay measurements, impairment generation, and BER testing capability with provision to generate PRBS patterns or user–defined test patterns.Also included is a powerful Report Generation feature to view report in XML and PDF formats. Modes of OperationThe MAC and IP addresses of the available NICs in a PC are displayed in the GUI. PacketCheck™ can be configured in Normal or Loopback mode. In 'Normal' mode, the application can perform either transmit (Tx), receive (Rx), or transmit and receive (Tx and Rx) functions on single or multiple streams. In 'Loopback' mode the packets received from the device under test (DUT) are transmitted back to the same device without modifying the pattern. This mode is used for RTD measurement.Interface Selection and Details Settings.

MAC, MPLS, IP, UDP Layer-wise Parameters ConfigurationAll test parameters are configured through the GUI. Key parameters include the Layer/Direction selection, MAC, VLAN, MPLS, IP, UDP, payload, transmit and receive, delay measurements and various impairments settings PacketCheck™ is automatically set to Layer 1 BER testing by disabling other layers.Interface Configuration Settings Layer 2 - EthernetHere you can configure the source and destination MAC Addresses.

Architecture of SoftEther VPN. Virtualization of Ethernet devices is the key of the SoftEther VPN architecture. SoftEther VPN virtualizes Ethernet devices in order to realize a flexible virtual private network for both remote-access VPN and site-to-site VPN.SoftEther VPN implements the Virtual Network Adapter program as a software-emulated traditional Ethernet network adapter. Here are 20 of the best free tools for monitoring devices, services, ports or protocols and analyzing traffic on your network. This list is intended to supplement 101 Free SysAdmin Tools.Even if you may have heard of some of these tools before, I’m confident that you’ll find a gem or two amongst this list. Garmin express support.

In addition, user can specify the Length/Type field value. Users can enable VLAN up to 3 stacks and configure with the headers.The following table gives the Length/Field values for the configured Layers (2/3/4). Users can choose to insert various types of packets into the stream by enabling the sequence number format, magicpattern, PRBS patterns through predefined files, and user-defined fixed pattern of up to 24 bytes. Payload Transmissiontypes also includes HDL File Transmission, a GL's proprietary Ethernet traffic capture format. In addition, to the capturedpacket, HDL file format stores additional information about the packet such as timestamp.

Using HDL file for transmissionallows user to generate various kinds of traffic like IPTV, VoIP etc., using captured traffic.Layer 1 BER Testing supports only PRBS patterns through predefined files, and user-defined fixed pattern of up to 24 bytes.Users are allowed to configure Frame size, Bandwidth, Inter Frame Gap (IFG) and transmission stop condition parameters during packet transmission. Users can specify frame size of fixed / random length, and define the transmission rate in Bit per second. The received frame details can be logged into a binary (.bin), HDL, and also BERT files for each stream, which are used for diagnosis purposes. Tx & Rx ParametersScreenshot of Tx and Rx Parameter Settings Traffic Generation ModeThe HDL file transmission has necessitated PacketCheck™ to operate in 2 different modes. The traffic generationmode is common to all the streams. Burst Mode - In this normal mode of operation, traffic is generated in bursts and the configured bandwidthis maintained, ignoring the IFG value. Here, the emphasis is to try and achieve the configured bandwidth for each stream.The resultant Inter Frame Gap varies because of the bursty nature of the traffic.

IFG Mode - In this Inter Frame Gap mode, traffic is generated frame-by-frame, and the configured IFG ismaintained. The configured bandwidth is ignored. Here, the emphasis is on maintaining the IFG value between successive packetsfor each stream. The actual Bandwidth generated depends on the Frame Size and the configured IFG.Traffic Generation ModeInter Frame Gap (IFG) option emphasizes on maintaining the Inter Frame Gap rather than the bandwidth duringtraffic generation for HDL files. There are 2 ways to configure Inter Frame Gap for HDL file transmission:.

For ' Take from HDL File' option, the timestamps stored within the HDL file is read. The Inter Frame Gapbetween the packets is computed from these timestamps.

This allows the generated traffic to mimic the captured trafficas much as possible. User can also configure the ' IFG value', during which the timestamps read from the HDL file is ignored and framesare transmitted with this Inter frame Gap.Mobile GTP Traffic SimulationUsing the “HDL File Playback” feature within PacketCheck™, the packet data can be carried as pre-recorded traffic files (GL's proprietary Ethernet traffic capture format.HDL files) to destination points and the same can be verified at the receiving end, which can also be a PacketCheck™. This feature can be used GL’s Mobile IP Core traffic module (requires Additional Licenses) to simulate GTP traffic over UMTS or LTE network.Generally, in an EPC network, are two types of data pipes can be found - Default Bearer (with non-guaranteed QOS) and Dedicated Bearer (with assured guaranteed QOS). The PacketCheck™ can be used with GL’s UMTS / LTE Simulators to encapsulate the generated packet data within GTP headers when transmitting through the gateways such as SGSN & GGSN, or SGW & PGW to verify the bearer allocation bandwidth at the end points. The packet data traffic generated at one end is received at the other end can be verified with various statistics such as packet loss, lost frames, bit error count, Tx Rx frames count and other traffic parameters. Delay MeasurementsPacketCheck™ can measure One-Way Delay (OWD), calculating the delay at the receiving end in µsec.

OWD can only be correctly calculated on a single PC with 2 NICs running PacketCheck™ on each of them. Only a single license needs to be purchased in this scenario. OWD-Tx option embeds Tx Timestamp within a special OWD packet along with the normal stream data. OWD-Rx option receives and detects the special OWD packet.Also, PacketCheck™ can be configured to measure the average Round Trip Delay RTD value of each packet in µsec. RTD is applicable to TxRX streams with DUT/ remote end configured in Loopback mode for RTD to work. While the test is running, users can view statistics for each stream.

These include bit error rates, throughput, lost or out of order frames, RTD and OWD.