Monitoring Device Administration › How Monitoring Devices Work › How Monitor Feeds Work

How Monitor Feeds Work

A monitoring device calculates response time metrics from one or more monitor feeds. A monitor feed is a source of response time data. For example, the:

• Packets monitor feed on a CA Standard Monitor receives mirrored TCP packets.
• Multi-Port monitor feed on a CA Multi-Port Monitor receives mirrored TCP packets.
• WAN Opt monitor feed on a CA Standard Monitor or CA Multi-Port Monitor receives packet digest files from Cisco WAE devices.
• Steelhead monitor feed on a CA Standard Monitor receives Steelhead-optimized packets.
• GigaStor monitor feed on a CA Standard Monitor or CA Multi-Port Monitor receives packet digest files from a CA GigaStor.
• NAM monitor feed on the CA Application Delivery Analysis Manager receives metric digest files from Cisco NAMs.

If more than one monitoring device observes traffic for the same server, the management console automatically assigns the monitor feed with the best source of response time data to a server.

If necessary, you can edit a monitor feed to assign:

• A secondary monitor feed. The management console automatically assigns the best monitor feed to a server. If you want the management console to automatically monitor a server from another monitor feed, for example, in the event that server migrates to a different location, assign a secondary monitor feed to a monitor feed.
• A domain. Assigning a domain to a monitor feed enables CA Application Delivery Analysis to uniquely identify server traffic. If you want to monitor duplicate IP traffic, assign a domain to each monitor feed.

More information:

Create a Pair of Monitor Feeds

How Monitor Feed Assignment Works

Assign Domains to Monitor Feeds