FULL LINE-RATE TRANSMIT
Full line-rate transmit is an important capability for a number of test and analysis applications. Testing network performance under maximum load is increasingly important to not only assure quality of experience, but also to harden networks against attacks, such as Distributed Denial of Service (DDoS) attacks.
Napatech accelerators make it possible to build solutions where the maximum transmission capability can be achieved to thoroughly test network resilience.
With Napatech accelerators, the frames to be transmitted are either generated by the application, replayed frames that were previously captured to disk, or retransmitted frames received in an in-line configuration.
Frames that are generated for transmission, or host-based transmit, allow frames to be generated by the host and transmitted at line speed on the network. This is useful for load-testing of networks and devices or simulating network behavior for network management and security testing. Timing can be important in these cases to ensure that the right frames are transmitted at the right time and in the right order.
Replay-from-disk allows previously captured frames to be analyzed for troubleshooting or security purposes. In this case, it is important that timing is preserved to accurately recreate what happened. It can also be useful in these cases to change behavior to simulate different situations. For example, it can be useful to manipulate the inter-frame gap (IFG) to speed up or slow down transmission.