Trace Route monitors

Trace Route monitor tracks the response time and total number of hops to reach a particular IP address. Trace Route monitor sends ICMP echo packets to the destination host and uses the TTL field in the IP header.

This monitor must run with root privileges since it uses raw socket for sending ping requests. This monitor does not work if the monitored device is protected by a firewall that does not support ICMP.

Monitored attributes for Trace Route monitors

The following table lists the monitored attributes of a Trace Route monitor.

Attribute	Description
Availability (%)	Percentage availability of the monitored resource. If able to connect to the target IP and transfer data, then availability is 100%; otherwise it is 0%.
DNS Lookup Time (ms)	Time taken for the input DNS name to be resolved into an IP address. Value of this attribute will be NO RESPONSE if the name lookup failed. The value is 0 if an IP address is input for the target device.
Max Hop Time (ms)	Maximum of all the average time in hop. For example, if it takes 17 hops to reach the destination, and for each hop there were 3 pings, then for each hop you have the Max Time, Min Time, and Avg. Time. Max time for that hop = maximum of the reach time for the given hop Min time for that hop = minimum of the reach time for the given hop Avg. time for that hop = (sum of the time to reach the hop)/number of responses for that hop Then the Max Hop Time is the maximum average of the hop time for all 17 hops. Max Hop Time = of all the hops, the maximum avgerage time to reach the hop
Round Trip Time (ms)	Average time taken to reach destination. For example, consider the Trace Route of www.cisco.com, using 4 pings for each hop. If the destination is reached in 3 pings, and the time taken by the 3 pings for this destination are 500ms, 550ms, and 525ms, then the Round Trip Time is (500 + 550 + 525)/3 = 525ms. Round Trip Time = (sum of the Round Trip Time for the destination)/ number of responses
Total No Of Hops (#)	Number of hops to reach destination.

Configuration information for Trace Route monitors

The following table describes the information required during configuration of the Trace Route monitor.

Configuration information	Description
Input fields on the Configuration tab
Instance Name	Specify a name for the monitor instance. This is displayed on folders, graphs, lists, etc. If you do not specify a name here, the monitor instance will be created with the name "Target Device = <input value of Target Device>".
Tag	Specify a tag value to search or group the objects. You can enter multiple name-value pairs, text, or include both (name-value pair and text). This gives you the option to group objects in different forms. Click the + icon to select a default tag class. The Enter Tag Details screen opens. Select Tag Class from the drop-down list and enter a tag value. Click Add to append tag class and value. Click Finish. Warning The tag specified by you is not considered as a default class. You cannot enter special characters &"/<>' in the tag field. Editing a Tag Value on the Enter Tag Details screen: Select a tag value and click Edit. Make the necessary modifications in the Tag Value text box and click Set to add the changes. Deleting a Tag Value on the Enter Tag Details screen: Select a tag value and click Delete. Click Yes to delete the tag value.
Source Agent	Select the name or IP address of the BMC ProactiveNet server or BMC ProactiveNet agent to host the new monitor instance.
Target Device	Specify the DNS name/IP address of the target machine. BMC ProactiveNet recommends that the target IP and the IP address of the device where the monitor is being created be the same. If domain name is specified here, then DNS lookup is done during each poll. Restart DNS client on Windows agent, if you change the IP address of the device (Domain name of which you had specified here to create the monitor instance).
Control tab
No Of Hops	Specify the maximum number of hops that can be taken to reach the destination. Default is 30.
Collect Data	Select/clear check box to enable/disable data collection for the monitored component. By default, data collection is enabled (check box selected).
Statistics Poll Interval	Specify the time interval between two consecutive statistical data polls. Default is 5 minutes.
Statistics Poll Timeout	Specify the time-out period for each poll of statistical data. If no data is available at the end of this interval, the system records Zero availability and proceeds with the next scheduled poll. Default is 30 seconds.
Group tab
Group Membership	This enables you to add a device and its monitors to one or more groups. Optionally, you may associate the device with a group. A group is used to logically organize the devices and monitors by department, geographic area, or service. Assigning a device to a group also enables the system administrator to restrict or allow access to certain devices. To associate the device with a group, select the group name here.

Additional configuration and setup issues

The following table presents details about Additional configuration and setup issues for the Trace Route monitor.

Issue	Details
Monitor configuration	No additional configuration requirements for this monitor. Maintain the default configuration of BMC ProactiveNet.
External setup	No external setup requirements for this monitor.
External dependencies	No external dependencies for this monitor.
BMC ProactiveNet agent dependencies	BMC ProactiveNet agent installation on the monitored host is not mandatory. Monitor instance can be created on any BMC ProactiveNet agent.

Trace Route monitor thresholds

Attribute	Severity	Duration (min)	Flag	Default Threshold	Outside Baseline	Baseline Type
Availability	Critical	0	Below	100	N	ALL
Round Trip Time	Minor	15	Above	180000	Y	ALL