Cisco Systems OL-11291-01 Manual De Usuario

The HTTP operation measures the round-trip latency time required to connect to and access data from 
an HTTP server. Three HTTP server response time measurements are made:

DNS Lookup—Round-trip latency in looking up the domain name.

TCP Connect—Round-trip latency in performing a TCP connect to the HTTP server.

HTTP transaction time—Round-trip latency in sending a request to, and receiving a reply from, the 
HTTP server (the probe retrieves the base HTML page only).

The HTTP operation also measures availability and errors for HTTP services.

To measure end-to-end performance for HTTP:

Define a device as the source device from which to measure performance. For details on defining a 
source device, see 

To control how statistics are collected, define your own HTTP operation. For details on defining an 
HTTP operation, see 

Define a collector to measure performance between the source device and the HTTP servers. For details 
on defining a collector, see 

. If you set the collector’s schedule to On 

Demand, start the collector when needed.

View the statistics in the HTTP Historical Statistics window. For details on viewing statistics for HTTP, 
see 

.

Use the HTTP Operation Configuration window to create, modify, or delete your own HTTP operations 
for measuring performance in connecting and accessing data from an HTTP server. IPM does not provide 
a default HTTP operation.

To define an HTTP operation:

From the IPM Main Window, select Edit > Configuration. 

The Configuration window appears.

Click Operation.

The Operation Configuration window appears within the Configuration window.

Click HTTP. 

The HTTP Operation Configuration window (

) appears.