Net Optics PA-CU-AR, PAD-CU-AR manual How much bandwidth is available on the Active Response Port?

10/100 Port Aggregator Tap

Active Response Tap FAQs (Continued)

Q: How much bandwidth is available on the Active Response Port?

A:The average amount of bandwidth for active responses is determined by the average available capacity on the link. .For example, on a 100 Mbps full- duplex link, if transmission from device A to device B averages 30 Mbps, and transmission from device B to device A averages at 50 Mbps, then there is an average capacity on the first side for 70 Mbps, and on the second side for up to 50 Mbps of active response traffic.

At any particular point in time, actual capacity is determined by the size of the packets being transmitted and the gap between these packets. .On a standard link with 64-byte network and active response traffic, the capacity at any point in time will be very close to the average capacity. .(We do not recommend using the Tap on links with jumbo packets as these large – up to 9K – packets can fill the buffer and impact performance.)

As the most common use for the Tap will be to inject TCP resets, which are standard 64-byte packets, it is unlikely that the transmissions from either side of the Active Response Port will exceed 10 Mbps, even if many sessions are terminated in a short time frame. .In our internal testing, we have therefore focused on Active Response Port performance at up to 10 Mbps..

Q:Does Active Response Port require the connected monitoring device to have an IP address?

A:Yes, the connected monitoring device is required to have a MAC and IP

address when the Active Response Port is operating in active mode. .These are not required when this Port is set to passive mode. .The Tap itself never has a MAC or IP address, regardless of how the Active Response Port is set..

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