Simena Network Emulators

• Minimize the cost and wasted time by finding and eliminating software bugs faster.
• Speed up testing and time-to-market. 
• Improve product and service reliability.
• Minimize bandwidth cost by accurately determining bandwidth requirements.
• Evaluate emerging applications, products and standards realistically.

Mesh Network Emulation
The Network Emulator makes testing in partially or fully meshed networks scenarios simple. Users can create any type of unidirectional virtual connections among all available Ethernet interfaces. Each virtual mesh connection is associated with filters to determine which packets should be sent to which virtual connections. This provides ultimate flexibility to create any type of connection topology, ring, mesh, star, or fully connected. Any combination of impairments can be assigned to virtual mesh connections.

Multiple Link Emulation
The Network Emulator allows up to 16 multiple networks to be emulated simultaneously. Filter rules divide incoming traffic into flows, and each flow is fed into an emulation instance which can have any combination of network impairments. Since multiple link emulations utilize only two physical interfaces, setting up and running multiple flows and complex traffic patterns is very easy.

Layer 3 Emulation
Simena’s Network Emulators also provide layer 3 network emulations by mimicking IP routing. Impairments can be specified either in bidirectional, unidirectional, or in a “router-on-a-stick” configuration by using the Network Emulator’s intuitive web GUI.

IEEE1588 / PTP Impairments
The Network Emulator can create IEEE1588 a.k.a. Precision Time Protocol (PTP) impairments by allowing users to filter specific protocol fields and to apply packet loss, latency and/or other network conditions on them. Users can easily create what-if scenarios in their network sensitive PTP implementations. They can find the breaking points and optimum design parameters before they deploy the IEEE1588 / PTP solutions.

IPTV MPEG-TS Impairments
Simena Network Emulators dramatically improve product quality and user experience when developing or evaluating IPTV solutions.  As Simena network emulator dynamically examines every byte in packets, users can easily impair specific video packet such as I, P, B frames. Complete list of impairments can be applied to video streams bidirectionally or unidirectionally, as well as with detailed packet filters.

Real-Time Packet Analysis & Statistics
Real-time throughput can be displayed in bits/second and packets/second on each port in both tabular. Because throughput numbers are collected from the Network Emulator’s kernel application they are extremely accurate – throughput numbers are accurate and reliable even under heavy emulation. Statistics can also be saved in CSV formatted files.

Filters
Network Emulator has extensive Layer 1 to 7 packet filtering capabilities, allowing users to pick certain packets to expose to network impairments. Filters can be logically combined with AND, OR and NOT operators to create complex filter sets. A special “custom filter” provides filtering up to 20-byte long pattern anywhere inside the packet including payloads. Filters can be specified either in the GUI or in an XML file.

G.1050/TIA-921 IP Network Modeling
G.1050 is an ITU standard on modeling IP networks in terms of network conditions and impairments. Simena’s Network Emulators provide an easy to use, comprehensive web based user interface to define, customize and run G.1050 based network emulations. Simena’s G.1050 implementation is based on latest 11/2007 revision.

Packet Modification
Simena Network Emulators allow users to modify data packets in real-time. Any protocol field can be modified with user selectable data. With custom packet modifications feature it is also possible to modify application payloads. Checksums can be optionally updated. Packet modifications can be utilized with filtering and emulations at the same time.

In-Line Management
This is a feature of having the management interface on any port and in-line with the test traffic. In-line management allows users to connect the network emulator between their workstations and the device under test without requiring an additional management network cable. In-line management is available on all Network Emulator models.