D-Link NetDefendOS User Manual page 134

Throughput Testing
The following command options test traffic throughput:
• -throughout
This generates the maximum achievable traffic flow through all specified interfaces using the
maximum packet size. This option does not validate the received packets.
• -traffic
This test generates traffic of mixed packet sizes between 60 and 1,518 bytes and verifies the
content of each received frame. Received packets are verified.
For either the -throughput or the -traffic option, the test should be run so that interfaces are
connected together and the output from one interface is received by another. This can be
achieved in one of two ways:
• Connection Through a Switch
All the interfaces are connected to the same switch which is itself disconnected from any
other networks. This is only satisfactory if the hardware has the same maximum link speed on
all Ethernet interfaces since faster interfaces can overwhelm slower ones.
• Connecting Ethernet Interfaces In Pairs
With hardware that has mixed Ethernet interface speeds, it is necessary to connect interfaces
with similar maximum link speeds together in adjacent pairs. A switch should not be used.
Testing should be done on one pair of interfaces at a time. For example, if the -throughput
option is to be applied between the If1 and If2 interfaces, the command would be:
gw-world:/> selftest -interfaces=If1,If2 -throughput
The -burnin Option
If the -burnin option is used, a set of tests, known as the test subset, is repeated continuously for a
period of time. The default test period is two hours and the default subset is:
• -memory
• -ping
• -throughput
• -traffic
• -cryptoaccel
The duration of the -burnin test can be changed, as can the test subset. For example, a test of the
memory and media that is repeated for 30 minutes would be:
gw-world:/> selftest -burnin -minutes=30 -memory -media
The -burnin option could, for example, be used to detect errors that only occur sporadically or
possibly only occur after some hardware component has reached a certain critical operating
temperature.
The full list of options for selftest CLI command can be found in the CLI Reference Guide along with
more command line examples.
Chapter 2: Management and Maintenance
134