3com 1000 사용자 설명서
RMON
5-29
About Default Alarm Settings
A new or initialized Switch has four alarms defined
for each port:
for each port:
■
Bandwidth used
■
Broadcast bandwidth used
■
Percentage of packets forwarded
■
Errors per 10,000 packets
The default values for each of these alarms are
given in
given in
.
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.
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:
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.
changes stored. The oldest records are overwritten
first.
Table 5-4 Initial settings for the default alarms
Statistic
High
Threshold
Threshold
Low
Threshold
Recovery
Threshold
Recovery
Samples
per
average
per
average
Period
Bandwidth
used
used
Value: 85%
No action
Value: 50%
No action
4
60 secs
Broadcast
bandwidth
used
bandwidth
used
Value: 20%
Notify and
blip
blip
Value: 10%
No action
4
20 secs
Percentage of
packets
forwarded
packets
forwarded
Value: 85%
No action
Value: 50%
No action
4
60 secs
Errors per
10,000 packets
10,000 packets
Value: 200
Notify
Value: 100
No action
4
60 secs