Cisco BTS 10200 Troubleshooting Manual page 77

Chapter 1 Troubleshooting Overview
•
Under normal operating conditions, no alarms should occur. However, any alarms that do occur should
be investigated immediately. It is normal for events of INFO and WARNING levels to occur; however,
these events should also be reviewed promptly by the operator.
Threshold/Throttle
The threshold value can range and is configurable. Currently, when configuring the threshold via CLI
or other various adapters, the maximum limit on the threshold is 100. However, there are ways of setting
the threshold to over 100 that must be coordinated with Cisco Customer Support. Setting the threshold
to anything over 100 can cause performance degradation to the system. There are some events that have
threshold over 100 as defaults.
The threshold describes the maximum number of events or alarms sent within a 30 minute interval before
the rest are discarded. For example, if the threshold is 50, then anything after the first 50 events of the
same type and id are discarded after it has received 50 of those events or alarms within a 30 minute
interval. After the 30 minute interval (on the hour) expires, the running threshold count is reset back to 0.
Throttle describes the number of events or alarms suppressed for every X number of events/alarms. For
example, if the throttle is 10 for a particular event or alarm, then the 1st through the 9th event are
discarded and the 10th event is transmitted. In other words, every X (throttle) will be transmitted and
every event in between will be discarded. The only exception is when the throttle set to 0, which means
there is no throttle and all events will be sent (up to the maximum threshold).
When combining threshold and throttle, only the transmitted event counts towards threshold count. For
example, if threshold and throttle for and event is 30/10, respectively, then there can be 300 events that
are issued. So the 10th, 20th, 30th, etc. events are sent and those sent events are counted toward the
threshold count. The last event being sent is 300th.
Data Reported
Depending on the specific event or alarm being reported, additional data fields (parameters) can also be
reported by the system. A single report can have as many as eight additional data fields. The length of a
string is denoted by a number in parentheses (n). The length of other types of fields is denoted by the
number of bytes in parentheses (n bytes).
Probable Cause
The probable cause contains descriptions of the network or system conditions causing the event or alarm.
Where multiple causes are possible, each cause is numbered and described in the order of its relative
probability.
Corrective Action
The corrective action contains recommendations for resolving the problem, if applicable. Where
multiple actions are possible, each action is numbered and described in the order in which they should
be performed.
OL-8723-19
INFO—Informational events indicate various stages of system operation as well as atypical
network conditions, such as timer expirations, values that have exceeded preset thresholds, or
unexpected responses from endpoints to signaling messages sent by the BTS 10200.
Cisco BTS 10200 Softswitch Troubleshooting Guide, Release 5.0.x
Managing Events and Alarms
1-21