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Using the SEHI100TX Hub View
2-20 Managing the Hub
Knowing the priority scheme employed by the SEHI100TX can tell you a lot about
the error counts you are seeing. For example, you know that the number of
packets counted as CRC errors had only CRC errors Ñ they were of legal size (not
runts or giants) and had no truncated bytes. You also know that any packet less
than 64 bytes long has been counted as a runt, even if it also had alignment
and/or CRC problems (which is likely if the runt is the result of a collision or
other transmission problem).
Frames Statistics
The Frames statistics windows display the following Þelds:
Frame Sizes
¥ Runt Frames (packets smaller than 64 bytes)
¥ 64-127 (byte) Frames
¥ 128-255 Frames
¥ 256-511 Frames
¥ 512-1023 Frames
¥ 1024-1518 Frames
¥ Giant Frames (packets larger than 1518 bytes)
Managing the Hub
In addition to the performance information described in the preceding sections,
the Hub View also provides you with the tools you need to conÞgure your
HUBStack and keep it operating properly. Hub management functions include
setting polling intervals, enabling ports at the module and port level, and
disabling ports at the port level.
Setting the Polling Intervals
To set the polling intervals used by SPMA and the SEHI100TX:
1. Click on the Device button to display the Device menu.
2. Drag down to Polling Intervals, and release. The SEHI100TX Polling
Intervals window, Figure 2-11, will appear.
NOTE
Because the SEHI100TX does not currently support Protocol counts, the Protocol Þelds
in the Frames window will be grayed-out.