Chapter 6: Optional Applications
Advanced Switch Tests for Ethernet (AST II)
SmartBits System Reference 63
Table 6-8 gives a brief description of these tests.
Table 6-8. AST II Tests and Descriptions
Tests Description
Address Catching Determines the address catching capacity (the
maximum number of addresses) the DUT can
handle.
Address Learning Rate Determines the address learning rate of the DUT
(the maximum rate at which the DUT can learn
addresses).
Broadcast Forwarding Determines the broadcast forwarding performance
of the DUT/SUT using a one-to-many traffic
distribution. The test utilizes burst-time mode to
facilitate measurement of offered load and
forwarding rates.
Broadcast Latency Determines the latency of the DUT/SUT when
forwarding broadcast traffic. This test utilizes a
one-to-many traffic distribution.
Congestion Control Determines how the DUT/SUT handles congestion.
The test indicates if head-of-line blocking exists at
the specified ports in the DUT/SUT.
Error Filtering Determines the performance of the DUT/SUT
under error or abnormal frame conditions. Allows
for various error types for the test.
Forwarding Rate Determines the overall forwarding performance of
the DUT/SUT including frame loss rate,
throughput, and forwarding rate using different
traffic distributions.
Forward Pressure Determines how the DUT/SUT handles forward
pressure on a port-by-port basis. The test utilizes
burst-time mode.
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