Fixed transmitted frames can be created and sent in any size or combination. For example, test frames can be sent repeatedly using a pre-defined setting such as 64 bytes, 128 bytes, or 256 bytes. In addition, it is possible to send the MAC address while incrementing it within a set range.

With variable frames, up to four fields can be varied at the same time. For example, the MAC address, VLAN, Priority and IP address can be varied as the frame is being sent. As the frame length can also be varied at the same time, traffic testing comes close to approximating actual network conditions.

There is template for frequently used frames such as IPv4, IPv6, TCP, UDP, ICMP, and IGMP transmit frames and an easy-to-edit protocol header. Furthermore, a checksum and CRC value can be added to the protocol to detect abnormal frames. It is also possible to add VLAN, MPLS, and EoMPLS to the tag information in Layer 2 and 3.

This function inserts specific frames when generating traffic. It is used to verify whether the pause and CRC frames are being processed normally when the DUT instrument is receiving high traffic.