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WS1008 Impairment Emulator
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Port type：
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RJ45 10/100/1000M
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Function 1：
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Impairment Emulator
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Function 2：
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Redundant Link Tester
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Function 3：
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Standard Traffic Generator
- Overview
- Functions
- Parameters
WS1008 Impairment Emulator has high-performance network impairment emulation function, redundant link test function and wire-speed traffic generation function, and provides a comprehensive network reliability test scheme, which can fully test and verify the network system's anti-impairment ability, primary and backup link switching ability and data forwarding ability. Provide effective test support for high-reliability network systems. 
The Ethernet Impairment Emulator combines comprehensive network emulation to enable you to create impairments in an accurate and repeatable way that occur in a real WAN including latency, reorder packets, loss of packets, inserted, repeated, errored and modified packets, background traffic BER Simulation, and bandwidth control. 
The redundant link test function provides high-speed on-off capability and accurate switching time measurement capability, and has the function of automatic alternating switching of primary and backup links, which allows users to easily verify the switching performance of the primary and backup links, and provides sufficient basis for verifying and improving the redundant network system. 
The traffic generation function provides 10/100/1000M port wire-speed traffic generation capability, which can be used for stress testing of various network equipment to fully verify the data forwarding capability of the equipment under test.
Impairment Emulator
Provides 8-port 4-link bidirectional emulation function. It has a wide range of impairment emulation functions and can accurately emulate impairment at linear velocity stream. Delay transmission of all packets or specific packets can achieve Jitter Buffer. All messages or specific messages are discarded, duplicated, modified, reordered according to the set proportion. Messages with specific content can be inserted at a set rate, and ultra-long frames, ultra-short frames, and FCS error frames can be constructed and inserted. Background data traffic for specific content can be inserted at a set rate. The bandwidth can be limited according to a set ratio. BER Simulation can be generated at a set ratio.
Redundant Link Testing
Connected in the network system, the on/off of the Ethernet link can be controlled in real time through software to simulate the physical failure of the communication link. For redundant network systems with primary and backup links, the switching time of the primary and backup links can be accurately measured. It has the function of automatic alternating switching of primary and backup links, which can realize the automatic cyclic on-off test of multiple primary and backup links. It can be connected to the network system for a long time, and the data is directly transmitted by default, which does not affect the normal operation of the original system. It is widely used in test systems, debugging systems, and test systems carried over Ethernet.
Standard Traffic Generator 
24 × 10/100/1000M RJ45 ports are available to generate wire-speed traffic. Can change the speed based on ports. Can set the source MAC address, destination MAC address, frame length, and payload content. Traffic can be counted based on ports. Statistics include the number of packets received, the number of packets sent, the receive rate, the transmit rate, and the number of FCS error packets.
| Product model | WS1008 | | Physical interface | 10/100/1000M RJ45 × 24 | | Size | 259mm × 183.6mm × 44mm | | Maximum power | 25W | | Operating temperature | 0 - 35℃ | | Operating humidity | 20% - 85%，Relative humidity | | Extension | Supports multi-chassis cascading | | Impairment test function | | Link resources | A single equipment can support up to four impairment links, and a single client can support up to four equipment to operate at the same time | | Latency | ·100Mbps rate maximum support 10s, 1000Mbps rate maximum support 2s ·Support latency jitter ·Support for generating latency for specific packets | | Packet loss | ·Support random packet loss, which can produce packet loss according to a fixed proportion or jitter ratio ·Support cyclic packet loss, you can specify the cycle period and the number of packet loss ·Can select specific packets according to the matching conditions to generate packet loss | | Duplication | ·Support fixed ratio or jitter ratio to generate duplicate packets ·Duplicate packets can be generated based on matching conditions | | Reorder | ·Generate reorder packets according to the set ratio ·Randomly generate reorder packets according to the set latency range ·Can generate reorder for specific messages | | Insert a message | ·Can set the message content and insert specific messages at a specified rate ·The message length can be set to random length or fixed length, and ultra-short frames/ultra-long frames can be set under fixed length (message length range 19-16k bytes) ·The payload content of the message can be set to 00, 5A, FF and random 4 types ·FCS error frames can be constructed | | Modification | ·Can modify all messages or specified messages according to the set ratio ·Can modify the message content according to fixed templates and custom templates | | Background traffic | ·Support generating background traffic based on port rate ·Provides a traffic generation template to set the packet content of background traffic | | Bandwidth limitation | ·Traffic bandwidth can be precisely limited according to the set ratio ·Ratio range 0.01%-100% | | BER Simulation | ·Errors can be constructed accurately according to the specified ratio ·Bit error rate setting range 10-2-10-10 | | Statistics | ·Provides real-time statistics on the number of packets such as latency, packet loss, duplication, reorder, packet insertion, and modification ·Provides statistics on sending and receiving packets based on link direction (including background traffic packets) | | Redundancy link test | | Link resources | A single equipment can support up to 6 pairs (12) of redundant links, and a single client can support up to 4 equipment to operate at the same time | The accuracy of measurement for primary and backup link switching | 20ns | | Link on-off latency | ≤20ns | On-off switching mode | ·Manually operate single link switchover ·Multi-link automatic cyclic switching ·Alternately cyclic switching of the primary and backup links | | Packet capture | When the link is disconnected, the last three packets in each direction of the link are automatically cached | | Basic traffic testing | | Traffic generation | ·Can generate 24 ports of 10/100/1000M stream at line speed ·Port speed regulation is possible ·The source MAC address, destination MAC address, frame length and payload content can be set | | Traffic statistics | ·Traffic can be counted based on ports ·Statistics include the number of packets received, the number of packets transmitted, the receiving rate, the transmission rate, and the FCS error packet |
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