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RMON 5-27
About Default Alarm Settings
A new or initialized Switch has four alarms defined
for each port:
■
Bandwidth used
■
Broadcast bandwidth used
■
Percentage of packets forwarded
■
Errors per 10,000 packets
The default values and actions for each of these
alarms are given in Table 5-4
.
About the Audit Log
The Switch keeps an audit log of all management
user sessions, providing a record of changes to any
MIB including the RMON MIB. The log can only be
read by users at the
security
access level using an
SNMP Network Manager.
Each entry in the log contains information in the fol-
lowing order:
■
Entry number
■
Timestamp
■
User ID
■
Item ID (including qualifier)
■
New value of item
There is a limit of 16 records on the number of
changes stored. The oldest records are overwritten
first.
Table 5-4
Initial settings for the default alarms
Statistic High
Threshold
Low
Threshold
Recovery
Samples
per
average
Period
Bandwidth
used
Value: 85%
No action
Value: 50%
No action
4 60 seconds
Broadcast
bandwidth
used
Value: 20%
Notify and blip
Value: 10%
No action
4 20 seconds
Percentage
of packets
forwarded
Value: 85%
No action
Value: 50%
No action
4 60 seconds
Errors per
10,000
packets
Value: 200
Notify
Value: 100
No action
4 60 seconds