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HP Intelligent Management Center v5.1 SP1 Application Manager Administrator Guide

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• Ping Test response time trend graph—Shows changes of the round trip response time for the
SNMP service over the selected time period in a line chart. Place the cursor over a spot in the
curve to view the response time at the specific time point.
• Attribute/Value—Monitor index name and data.
Response Time—Round trip response time of the SNMP service in the last APM polling period.
History icon —Click the History icon to view statistics of the history response time
changes in a line graph. By default, the graph shows the last hour statistics. To change the
report period, click the Last 6 Hours icon , Today icon , Yesterday icon , This Week
icon , This Month icon , or This Year icon on the upper right of the graph as
needed. Hourly data and today's data is collected every polling interval, yesterday's, weekly,
and monthly data is collected in hours, and yearly data is collected in days. The statistics
graph contains maximum, minimum, and average response time values. Place the cursor over
a spot in the curve to view the response time values at the specific time point.
SNMP OID
The SNMP OID area layout is shown in Figure 259.
Figure 259 SNMP OID area layout
• Refresh icon —Click the Refresh icon to refresh the area.
• OID/Value—OID and its value for SNMP monitoring obtained in the last APM polling period.
DNS service
Domain Name System (DNS) is a core Internet service. With DNS, users can use easy-to-remember
domain names in some applications and let the DNS service translate them into IP addresses. The
default DNS service ports are TCP 53 and UDP 53.
APM monitors the DNS service status by requesting the DNS service to translate a specified domain
name into an IP address. This section describes how to add and modify a DNS monitor, and helps view
the monitor report.
Adding a DNS service application monitor
APM monitors DNS status through DNS service ports. When you add the application monitor for DNS
service, make sure the following requirements are satisfied:
• The host on which the DNS service you want to monitor is located must be added to the IMC
Platform. For information about adding a host to the IMC Platform, see IMC Base Platform
Administrator Guide for the chapter on resource management.
• If the host to be monitored runs on an enterprise or organization network that uses public DNS
servers on the Internet, make sure the host is added to the IMC Platform, and no SNMP, Telnet or
SSH settings need be configured.
To add a DNS service application monitor: