Denial Of Service (Dos) Alarms; Storing Faults And Retrieving Fault History - 3Com WX4400 Reference Manual

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HAPTER
Denial of Service
(DoS) Alarms
Storing Faults and
Retrieving Fault
History
A
ANAGING LARMS
SNMP notifications must be enabled on the WX switches. Table 28 lists
the notification types for Intrusion Detection System (IDS) and Denial of
Service (DoS) protection. (For more information about IDS notification,
see "Intrusion Detection System (IDS) Alarms" on page 402. To enable
notifications on a switch, see "Configuring SNMP" on page 196.)
1 To view DoS alarms in chart format, click the Chart icon at the bottom
left corner of the DoS Alarms section of the 3WXM screen.
2 To view alarms in table format, click the Table icon at the bottom left
corner of the DoS Alarms section of the 3WXM screen.
In the table view that displays, hypertext numbers link to filtered lists that
contain only the alarms for that row and column that contain the
hypertext.
3 To view a table of all alarms in 3WXM, click Details at the bottom of the
DoS Alarms section of the 3WXM screen. Performing this action produces
the same effect as clicking the show table icon.
3WXM stores fault information on the server database and allows
multiple clients to access the data. With each fault stored in the database,
correlated traps and events are also stored. Data is periodically purged to
keep the database to a manageable size. Purging is based on criteria such
as the number of active faults (events) or the number of days for which
data should be preserved.
In addition to active fault information, the database also holds historic
fault information. Users can view this historic information when
necessary. However, the information is available for viewing in reports
only. Consequently, you cannot perform any action on historic
information.
Perform the following steps to retrieve fault history:
1 Click History in the options located on the right side of the Fault
Management panel.
2 3WXM displays the Alarm History dialog box. You can sort the history
results by any of the following column headings:
Date
Severity
Category