10-Gigabit Ethernet Switch Performance Testing - Ixia

3. Testing how 10GE ports handle prioritized
streams based on QoS parameters
Objective. To determine the maximum rate
at which the DUT can forward frames
correctly according to their priority
settings.
The test sets up a configuration in which
many ports, each with a different priority,
sends traffic to one single port. The
receive port may be overloaded in order to
test the receipt of the highest priority
frames.
This test supports both MAC and IP layer
frames; priority bits may be specified
either in the IP precedence bits or in the
10 GE
1 GE
1 GE
802.1p header. Latency may optionally be
calculated per priority level. Test results
are: the transmit and receive rates per
priority, percent loss, and optionally,
latency, for each priority per port.
Setup. A minimum of two test ports will be
used for this test, in conjunction with the
IxScriptmate QoS Many-to-One test. In this
example, one Ixia 10GE test port and two
Ixia 1 GE test ports connected to the DUT –
all traffic directed to a single 10GE port on
the DUT.
Parameters. Select the three test port pairs,
frame sizes, QoS parameters for each port,
and number of iterations.
Figure 7. Testing how 10GE ports handle prioritized streams based on QoS parameters — setup.
10-Gigabit Ethernet Switch Performance Testing Copyright © 2004, Ixia 25
10 GE