Agilent Technologies N2620A user manual Performing RFC 2544 Tests, RFC 2544 Throughput Test

Network Testing with the FrameScope Pro 2

Performance Tests

4Press Stop to cancel the test or to review the transmission information on the MAC Loopback or IP Loopback screen.

Performing RFC 2544 Tests

	RFC 2544 tests comprise of round-trip latency test,
	point-to-point throughput test, frame loss rate tests and back to
	back tests.
	For RFC 2544 tests, if the slave FrameScope unit is in use, for example,
NOTE
	running a frame loss rate or back to back test, an auto-search from the
	master FrameScope unit will result in Search Failed. A specific search
	(keying in the IP address) on a FrameScope unit under test will result in
	Remote Busy.
	RFC 2544 Throughput Test
	This test is designed to determine the maximum throughput
	rate in frames per second, bits per second or percentages for
	different frame length between two network points with no
	frame loss.
	The test sends frames at a constant rate in unidirectional or
	bi-directional, for a specified number of seconds. If the
	transmitted frame count does not match the number of frames
	received by the other side, the transmit level is reduced. A
	search is conducted to determine the maximum frame rate that
	can be forwarded by the network with no loss. The search is
	capped by the maximum data rate if it is specified by user,
	otherwise will be based on the media maximum rate. During
	Bi-directional symmetrical test or loopback mode if the frame is
	dropped, regardless of the direction the test will be re-run at a
	lower rate and the final result will be single throughput
	value.On the otherhand, bi- directional asymmetrical test will
	measure the throughput rate for each direction. The test
	procedure is repeated for a number of legal frame length to
	produce a table of maximum throughput versus frame length.
	For better results, adjust the duration to load the device under
	test sufficiently.
	RFC 2544 Round-trip Latency Test
	This test measures the latency experienced by a frame passing
	and looping back through the network. A specially tagged frame
	is sent and the time that this frame exits and loopbacks to the
	FrameScope is recorded. Round trip latency is the difference

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