Technical data

Using Technician Interface Software
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By increasing the search depth, you may enable the daughterboard to attain
compression ratios higher than are possible using default or inherited search depth
values. The results you achieve depend greatly on the type of data you want to
compress over a circuit or line. Note, however, that increasing the compression
ratio beyond a certain value on a circuit or line may also lower the throughput on
that circuit or line. Configure search depth attributes for the best trade-off between
compression ratio and end-to-end (for example, workstation-to-workstation)
throughput on the circuit or line.
Use Technician Interface commands to customize:
• wfWcpLineSearchDepth
• wfWcpCircuitSearchDepth
Testing Compression and Throughput
Perform the following tests before and after making any change to the set values
of the line and circuit WCP search depth attributes:
• Measure end-to-end throughput for several file transfer operations across the
circuits or line for which you are changing the search depth value. Select files
that contain data representative of the type of information your organization
needs to send and receive daily.
• Measure the percentage of bandwidth utilization required to send your test
files over the synchronous line.
• Calculate the compression ratios resulting from the file transfer operations
Compare your compression ratios and line utilization figures taken before and
after your changes. Determine from these results whether you have improved the
configuration for data compression on the desired line and/or circuits.
The best settings for the search depth attributes result in the best trade-offs
between end-to-end throughput, compression ratios, and line costs for the type of
data you want to send over a synchronous line.
Note:
Only expert network technicians or administrators should attempt to
modify the set value of these WCP attributes. You cannot modify these
attributes from a Site Manager workstation.