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Chapter 4
Traffic Generation
One of the key features of ALBEDO Telecom family of Ethernet Generators &
Analysers is the ability to generate traffic with deterministic and random bandwidth
profiles. The traffic generation feature can be used to stress the network, simulate user
traffic and, if a suitable payload is configured, to measure critical network performance
parameters like bit errors, packet loss or latency.
xGenius has eight independent full featured traffic generators attached to each of the
available Ethernet / IP test ports (Port A and Port B). Each traffic flow may be
configured with specific encapsulation and addressing parameters thus providing great
versatility in all applications requiring Ethernet and IP traffic generation.
4.1.Generation of Ethernet Traffic
In the test unit, generation of custom Ethernet frames is available for Port A in Ethernet
endpoint mode through the Frame, Bandwidth profile and Payload settings for each of
the eight available traffic flows. This is a short description of the Ethernet traffic
generation menus:
• Frame: Configures the encapsulation and MAC addresses. If the Ethernet frames
have any VLAN tag, this menu configures the VID and priority for these tags.
• Bandwidth profile: Sets the traffic generation statistics. There are four different
generation profiles to choose: Constant, Periodic burst, Ramp and Random.
• Payload: This menu is used to set the payload to be inserted in the generated
Ethernet frames. The SLA payload enables the user to measure delay, jitter and
packet loss. The BERT payload (flow 1 only) is used for BER testing in framed
interfaces.
Frame generation capability is controlled by the run button. That means that no test
traffic is generated if you don’t press run. However, the tester may generate signalling
traffic or reply to certain messages like ARP or ICMP echo requests even if there is not
an ongoing test. Some automatic tests like the RFC 2544 or the eSAM have their own
internal traffic generation dynamics but they are controlled by the RUN button as well.
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