McDATA 4Gb SAN Switch for HP p-Class BladeSystem User Guide (AA-RW20B-TE, December 2005)

76 Managing switches
NOTE: The switch will down a port if a rising trigger alarm is not cleared after three consecutive sample
windows.
Figure 36 Port threshold alarm example
8. Enter a sample window in seconds. The sample window defines the period of time in which to count
events.
9. Repeat steps 3 through 7 for each alarm you want to configure or enable.
10.Click OK to save all changes.
Paging a switch
You can use the beacon feature to page a switch. The beacon feature causes all Logged-In LEDs to flash,
making it easier to recognize. Select Switch > Toggle Beacon (check mark shown) to page a switch. Select
Switch > Toggle Beacon again (check mark removed) to cancel the beacon.
Setting the date/time and enabling NTP client
The Date/Time and Network Time Protocol (NTP) dialog enables you to manually set the date, time, and
time zone on a switch, or to enable the NTP Client to synchronize the date, time, and time zone on the
switch with an NTP server. Enabling the NTP client ensures the consistency of date and time stamps in
alarms and log entries. An Ethernet connection to an NTP server is required. When date/time is set or
displayed in the firmware, it is displayed based on the time zone configured. However, when displayed in
the Date/Time dialog, the value is always in local time. The difference between switch and workstation
times must not exceed 24 hours, or the switch management application can not connect. To set the date
and time on a switch, perform the following procedure:
1. Select a switch in the topology display, and open the faceplate display.
2. Select Switch > Set Date/Time.
3. Choose one of the following:
• Enter the year, month, day, time, and time zone in the Switch Date/Time dialog. Click OK. The new
date and time take effect immediately.
• Select the NTP Client Enabled option to enable the switch to synchronize its time with an NTP server.
Enter the IP address of the NTP server. Ethernet connection to NTP server is required. Click OK to
save the settings.
Rising
trigger
Falling
trigger
Event
count
Sample window
Generate falling
trigger alarm;
eligibility is reset
Generate rising
trigger alarm;
eligibility ends
Generate rising
trigger alarm;
eligibility ends