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Data Monitoring - Servers

Use the Server List and the Server Subnet List to view and manage the servers that are monitored by the management console. Use the server Search to find matching servers.

Frequently Asked Questions

• Why does the management console add matching servers in the Network List? To enable the management console to monitor a multi-tier application where a server initiates client requests to another server, the management console automatically creates a /32 client network for each IPv4 server, respectively. When a monitoring device observes server traffic that matches a specified server subnet, the management console automatically adds the server to the Server List and adds a /32 client network, with the network type you specify, to the Network List.
• Why is the Last Seen status "Inactive"? If the management console has not computed response time metrics for application traffic between the server and at least one client network during the past 7 days, the Last Seen status is Inactive. If the Last Seen status is Inactive, verify that the management console is configured to monitor the application port on the server, and that there is matching application traffic between the server and a client network.
• Why is a server not displayed? When a monitoring device observes matching application traffic with a client network that corresponds to a specified server subnet, the management console adds the server to the Server List. If you do not see the server you want in the Server List, type search text in the entry box and click Search to narrow the list of servers. If necessary, use the Server Subnet List to verify the server subnets are properly specified.
• When should I add a server to the list? If you want to define an application before the management console has observed the application traffic, add a server to the list.
• When should I delete a server? Delete a server to stop the management console from monitoring all of its application traffic. After you delete a server, existing data continues to be available for reporting purposes. Deleting a server that matches a server subnet will only temporarily delete the server. When the management console observes server traffic that matches the server subnet, the management console will subsequently add the server back to the list. If the server you want to delete matches a specified server subnet, edit the server subnet and add a server exclusion to prevent the management console from monitoring the server.
• What does the blue arrow do? The blue arrow  menu enables you to import and export a list of servers. CA recommends adding server subnets, rather than servers, to monitor application performance.

Server Subnet List

View and manage server subnets to specify a range of IP addresses that represents the application servers that you want the management console to monitor. If necessary, add exclusions to ignore traffic from particular servers within a server subnet.

Description

Provide details about the server subnet, such as the server VLAN traffic that can be monitored by the server subnet.

Subnet

Displays the server subnet definition.

Exclusions

Displays the number of exclusions that have been defined to filter out matching server traffic in the server subnet

Apps

Displays the number of applications that the management console has observed on the server subnet.

Servers

Displays the number of matching servers that the management console has observed on the server subnet.

Server List

View and manage the servers that are monitored by the management console. If you do not see a particular server, go to the Server Subnet List and verify that a matching server subnet exists. For each IPv4-based server in the list, the management console automatically monitors application traffic and creates a corresponding /32 client network.

Add Server

The management console automatically populates the Server List with observed server traffic that corresponds to the server subnets you specify.

If you want to assign a server to an application before the management console has observed its traffic, click to add the server, and then assign the server to the application.

Search

Enter a search string to find partial matches. Wild card characters are not supported. To reset the list, click Clear.

Server

Displays the host name of the server.

Address

Displays the IP address of the server.

Monitor Device

Displays the assigned monitoring device on the corresponding CA Standard Monitor or CA Multi-Port Monitor.

Apps

Lists the number of application ports that the management console has observed on the server. Click the magnifying glass to see the actual port numbers.

If the port number is well known, the magnifying glass displays the well-known application name. The list of observed application ports does not include applications that you have created manually.

Bytes

Reports the server traffic, in bytes, that was observed by the assigned monitor feed. Use this information to identify your busiest servers.

User Modified?

Indicates whether a management console administrator has changed the default properties for the server.

Last Seen

Displays a timestamp of the most recent 5-minute interval during which the management console reported application traffic on a server.

If the Last Seen status is Inactive, the management console did not collect application response time data for the server in the past 7 days.

Tip: To collect data, an application must meet the management console threshold for Network Round Trip Time observations.