Single and Multi-stream IP WAN Link Emulators

Featured Product from GL Communications, Inc.

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GL provides a new generation of WAN network emulation appliances that makes it simple and affordable to test applications in the lab under real-world conditions - bandwidth, latency, jitter, loss, and other WAN impairments.

Most of the GL WAN link emulators support both electrical and optical interfaces, with capacity ranging from 10 kbps to 10 Gbps. Connect using either RJ-45 copper or modular SFPs fiber  for convenient installation on copper or fiber-based networks.

GL’s WAN IP Link Emulators (IPNetSim™, IPLinkSim™) provide all necessary features to emulate Network Packet effects and study network behaviour. 

Both IPNetSim™ and IPLinkSim™ provides several user-defined impairments such as Bandwidth Throttling, Latency, Jitter, Packet Loss, Packet Reordering, Packet Duplication, Packet Corruption, Error Insertion, etc. Bandwidth Throttling simulates slower WAN links like RS232/DSL/Modem/T1/E1/T3/E3 etc. Latency can be used to recreate the constant or varying delay caused by various factors in the network. In addition to the above listed impairment types, IPLinkSim™ can also emulate Congestion in the network by generating additional background traffic.

Both IPNetSim™ and IPLinkSim™ supports Command line Interface (CLI) to access all the functionalities remotely using TCL clients and MAPS™ CLI client/server architecture.

Main Features

  • IPNetSim™ operates in multi-stream mode. Emulates bidirectional multiple WAN Link (16 streams on 1 Gbps ports and 4 streams on 10 Gbps ports) per unit
  • IPLinkSim™ operates in a single stream mode and emulates only 1 bidirectional WAN Link per unit
  • mTOP™ offer rack-mountable, high density, multi-device support. Stack multiple rack units to handle large number of ports. Scalable solution for unlimited number of ports
  • Emulate WAN conditions separately and independently on each direction. Acts as a transparent bidirectional link or a simple Ethernet Bridge for easy integration with any test setup.
  • ”Stream Definition” feature in IPNetSim™
    • classifies traffic on each port into separate streams (up to 16 streams on 1 Gbps ports and 4 streams on 10 Gbps ports); Streams can be defined with various header fields like Source/Destination MAC Address, VLAN Id, MPLS Label, Source/Destination Ipv4 Address, Source/Destination UDP ports
    • Supports both Raw (bit level) and Packet mode (header fields) stream configurations
    • Up to 120 bytes wide stream definitions covering entire packet header from MAC to UDP and also Payload
    • For each stream definition, offset can be set to any byte within the packet (from 0 to 2047) which gives flexibility to define any fields within any protocol headers, and even the payload
    • Independent per stream WAN impairments helps emulate different WAN links in a single device
  • Detailed per stream Tx Rx frames statistics for easy performance monitoring
  • Live throughput graphs per stream to visualize the effects of WAN impairments on the traffic
  • Check the stability or performance of the network with various real-world WAN Impairments including:
    • Bandwidth control option to emulate various WAN link speeds (Modem, DSL, T1/E1/T3/E3/OC3/OC12 etc) – 1 Kbps up to 10 Gbps
    • Latency/Delay (0 milliseconds up to 1.5 seconds per stream (for 1Gbps link)/0.5 seconds per stream (for 10 Gbps link) – single delay, uniform, random distributions) to emulate various wired, wireless, and network elements
    • Packet Loss (loss rate % of total packets 0–100%)
    • Packet Reordering (reordering rate (0-100%) with Delay Range of up to 2 seconds
    • Packet Duplication (percentage of total packets duplicated 0 - 100%)
    • Logic Error Insertion (10^-1 to 10^-9 error rate) within Ethernet packet to emulate faulty network devices or interference
  • Maximum Frame Size supported – 2048 bytes
  • Supports both Periodic (constant and predictable) and Random (unpredictable real-world conditions) impairments such as Packet Loss, Packet Reordering, Packet Duplication, and Error Insertion
  • Supports transmission of Ethernet Pause frame with user-defined quanta used to throttle Ethernet link overload
  • Command Line Interface for automated testing and remote accessibility