Spirent SmartBits System, Reference Manual

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Chapter 6: Optional Applications
SmartCableModem Test
66 SmartBits System Reference
Latency Over Time Every 10 microseconds, the test records the following
for each port:
•
Total number of frames received.
•
Minimum latency of all frames received within this
interval.
•
Maximum latency within this interval.
The test also calculates the average latency within this
interval. Measurements are stored in up to 50,000 data
collectors (4,000 for L3-6710).
Latency per Stream For each traffic stream, the test records the:
•
Total number of frames received.
•
Minimum latency of all frames received.
•
Maximum latency of all frames received.
The test also calculates the average latency of all
frames received.
Se Latency A combination of Sequence Tracking and Latency per
Stream. Additionally, a distribution of latency per
stream is presented across 16 pre-set time intervals.
Raw Tags All test frames in SCMT have special signature tags
that identify and track every frame in the system. This
test records the unfiltered tags. Results of the test are
presented for viewing in a table format that can be
saved to a file in tab delimited format.
Table 6-10. SCMT Tests and Descriptions (continued)
Test Description