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GEM 10/100 Gigabit Ethernet Network Emulators

PRODUCTS

Net Tool Optimizer

Network Emulator

• Test 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 Advanced Ethernet Network Emulators are ideal for simulating 10/100/Gigabit Ethernet or IP based networks 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.

Anue GEM Network Emulators:

• 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 Emulator 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

GEM Software Loads

GE Network Emulators

GE Gigabit Ethernet Network Emulators provide basic cost-effective fiber-spool replacement. Operating at Layer 1, GE Network Emulators 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 See Combination Network Emulator Products

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