Impairment overview of nutea-551 – Xtramus NuTEA-551 V1.2 User Manual
Page 8
8
1.4. Impairment Overview of NuTEA-551
NuTEA-551 can simulate different Ethernet traffic impairment situations, including:
CRC Error Packet
At the tail of a packet, it keeps a checksum value to verify the correctness of the packet when it is
received. If the checksum value is not correct that can verify the correctness of the packet, we call it CRC
Error Packet.
Packet Corruption
For some reason intentionally or unintentionally, the content of packet is modified, owing to poor
transmission or manual interference.
Drop Packet
Ethernet is a family of frame-based computer networking technologies. Frames are transmitted via
different devices and media. After the transmission via different media and devices, some of frames might
be lost. For layer 2 switching mode of OSI model, packet is the same as frame.
Packet Re-Order
All of frame/packet should be transmitted sequentially, and it is able to reunite to complete data at
destination device. If the frame/packet sent goes different routes, it might be possible that later packet
arriving destination earlier, so the sequence of packet is changed, owing to poor device or manual
interference.
Packet Duplication
Packet is transmitted one by one via network device. For some reason, the destination had received the
packet, however the sending side does not received the acknowledgement, so packet is resent and
duplicated packet is generated.
Packet Delay & Jitter
Delays may occur during packet/frame transmission in real world network environments. Also, these time
periods of data transmission delays may vary, and are usually referred as jitters.
For more information regarding how to configure these Ethernet traffic impairment situations, please refer
to 5.4. NuTEA-551 Parameter Settings.
E-mail: [email protected]
Website: www.Xtramus.com
XTRAMUS TECHNOLOGIES
®