Cisco CX-FEIP-2TX= Installation and con?guration User Manual download pdf (Page 30)

HP OpenView NetMetrix/UX Release Notes version 6.0

October 1, 1998

Known Problems and Work-Arounds

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Description Load Monitor’s Source graph shows anomalous data

Symptom When viewing a Source graph For Each Update Interval, sometimes a

host appears with a very large data value.

Details For performance reasons, Load Monitor often uses a hostTopN study to

retrieve data values for the Source graph when accessing a LanProbe or

standard RMON agent.

This TopN study is created according to the criteria deﬁned by the

Source data properties. When displaying data For Each Update Interval,

data values are calculated for a delta, which requires at least two data

points per host.

Over time, the hosts ﬁtting the criteria change, and the associated host-

TopN table also changes. When a host appears for the ﬁrst time in the

Source graph, only one data point is available; consequently, no delta can

be computed. In this case, the displayed value is based on the cumulative

count, which is often very large relative to the other items in the graph.

Work-Around Wait until another update interval has elapsed (such that two data

points are available).

Description Load Monitor’s Conversation segment graph sometimes loses

trafﬁc lines

Symptom When displaying the Conversation segment graph, certain combinations

of properties may cause the graph to lose all trafﬁc lines.

Details If you change the Conversation segment graph’s Scale Type to Percent-

age, then change any of the data properties, the trafﬁc lines may disap-

pear, leaving only a segment ring with unconnected nodes. This problem

occurs only with the segment graph type.

Work-Around If the problem occurs, you can clear it by changing the graph type to bar,

applying the change, then changing it back to segment. To avoid the

problem, display Conversation as a bar graph, set the properties you

want, then switch to the segment graph.

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Cisco CX-FEIP-2TX= Installation and con?guration User Manual Page 30