GEM: 10/100/Gigabit Ethernet Network Simulators

Anue GEM Advanced Ethernet Network Simulators are ideal for testing 10/100/Gigabit Ethernet or IP based networking solutions in a lab environment. Ethernet Network Simulators can reproduce the delay and impairments experienced by Ethernet signals across MANs and WANs regardless of the underlying transport mechanism.



Does your solution:
Work properly in the presence of delay and packet jitter?
Detect and handle errored frames?
Accommodate frames that are dropped, fragmented, duplicated or out of sequence?
Keep VLAN traffic segmented?

Anue GEM Network Simulators:
Run 100% line rate traffic from 10Mbps to 1Gbps at any frame size
Support differential impairment for up to 64 profiles based on user-defined filters

Can be automated or operated interactively, locally or remotely
Are accurate down to one-bit time increments
Provide delay of 250ms or more at all bit rates

Hardware Platforms
The GEM Network Simulator is available on the Maui and Hawaii platforms. Both Maui and Hawaii consist of 2U rack-mount chassis that support up to 7 software loads.
The Maui platform supports up to four blades and data rates up to 2.6Gbps.
The Hawaii platform supports up to two blades and data rates up to 11.3Gbps.

Supported rates
10Mbps copper
100Mbps copper
1Gbps copper and fiber

Profiles
Define up to 64 distinct network profiles emulating 64 network clouds.
Create up to 512 rules to identify profiles.
Define throughput, delay and impairment profiles for each profile.

Selection Criteria
Data-based rules can be defined using a variable-length mask (1 to 32 bytes long) to match data anywhere within an Ethernet frame. For example a rule could match MAC address, IP address, VLAN tag, a fixed byte offset or all of the above simultaneously.
Deterministic rules can be defined to select packets at regular intervals (every Nth packet) or at randomly distributed intervals (Poisson, Gaussian, Uniform).

Delay/Jitter
Define a delay value for each network profile.
Insert from 50us to 250ms of packet delay in 16ns increments (GigE) with the standard configuration at full line rate.
Shift code-word alignment from 0 and 19 bits in 1-bit increments (0.8ns at 1.25Gbps).
Introduce inter-packet delay variation (jitter) accurately.
Increase maximum delay with a Delay Doubler and Quadrupler (even greater delay amounts are available upon request).

Error
Set error rates from 10-12 to 10-2 at Layer 1 or MAC layer.
Inject errors at a fixed rate (periodic) or randomly with a Uniform, Poisson or Gaussian distribution.
Error 1 bit, 32 contiguous bits or a 32-bit user-defined error pattern.
Target specific bytes for error or modification.

Impairments
Configure impairment settings per profile.
Drop
Reorder
Duplicate
Fragment
Corrupt CRC
Corrupt data
Inject Loss of Signal.
Optionally fix the Ethernet CRC or IP checksum.
Combine multiple impairments on a single packet.
Modify impairment configuration without interrupting traffic flow.

Bandwidth Control
Limit throughput to a minimum of 0.005% of line rate (50kbps at 1GigE).
Optionally generate Pause Frames. High-water and low-water (generation of XOFF & XON) thresholds are specified by the user in terms of surplus/deficit of bytes.

Operation
Configure via a front panel LCD control for standalone operation
Configure remotely via an Ethernet control port
Interactive: Browser-based GUI with save/load capability
Automated: Powerful TCL script library

GE Network Simulators
GE Gigabit Ethernet Network Simulators provide basic cost-effective fiber-spool replacement. Operating at Layer 1, GE Network Simulators simulate signal delays that occur during the transmission of Gigabit Ethernet data over optical fiber, allow controlled packet loss/error injection and simulate loss of signal (LOS) conditions.

Note: Up to 7 software loads for different protocols (SONET, OTN, Ethernet, Fibre Channel, CPRI) can be combined on the same system. A combo network simulator can easily switch between different features, data rates and protocols, simplifying testing and leveraging your investment. [view Network Emulator Combo products ]



Since 1997, Gillaspy Associates has built a solid reputation for developing strong relationships with our customers by providing quality solutions and ongoing support.

GEM/XGEM Related Pages

Overview

GEM (10/100/1G Ethernet)

XGEM (10G Ethernet)

Ethernet Product Brief


Delay Emulation Products

GEM/XGME

SD Signal Delay

PD Path Delay

FC SAN Delay & Impairment

Combo Units


Solutions

Networked Applications

Server/Data Center Migration

Video & Voice

Wireless/Mobile

Network QoS

Circuit Emulation

PON

Disaster Recovery/Business Continuity

Satellite Communications

Proof of Concept & Interoperability

Next Gen Sonet/SDH

iWARP

Network Planning & Readiness

SAN Extension

CPRI

TCP/WAN Acceleration

Anue Systems


Training Courses

Gillaspy currently offers the following training courses:

SAS

ML270 - Serial Attached SCSI Architecture & Instrumentation

Fibre Channel

ML250 - Fibre Channel Systems Architecture & Instrumentation

ML350 - In-depth Fibre Channel Analysis

iSCSI

ML280 - iSCSI Architecture and Instrumentation

FCIP

ML240 - Introduction to Fibre Channel Over IP (FCIP)

MCE: Medusa Certified Engineer

MC100 - Xgig Analyzer
MC125 - NetWisdom SAN Performance Monitoring System

SATA

Serial ATA Architecture

IO Bus

PCI™ Architecture
PCI™ Overview
PCI-X™ Architecture
PCI-X™ Overview
PCI Express ™ Architecture
PCI-Express™ Overview
Intel Pentium 4/m/Xeon
USB Architecture (Core Topics)
USB Architecture (LS/FS Only)
USB Architecture (HS Only)

Contact Gillaspy Assocates at 805-987-1959 to schedule an on-site class.

Network Emulation Blog

Blog Home
Satellite Testing
Server Migration
VoIP
Circuit Emulation