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User Guide for the Cisco Network Analysis Module (NAM) Traffic Analyzer, 5.0
OL-22617-01
Chapter 2 Setting Up The NAM Traffic Analyzer
Classification
Step 1 Choose Setup > Classification > URL-based Applications.
Step 2 Click Create.
The Create URL-based Application window displays.
Enter values in the fields according to Table 2-34, URL-Based Applications.
Step 3 Click:
• The Submit button to submit the request
• The Reset button to clear the values on the screen
• The Cancel button to close the dialog box and return to the previous screen
Example
After you click submit, the NAM will have an application named “my_host HTTPserver.” It functions
like any user-defined application in the NAM. The packets or octets counter is the number of HTTP
packets that have the URL “HOST=my_host.mydomain.com.”
Tab l e 2-34 URL-Based Applications
Field Description
Index A unique number (1-64) of each URL-based application. You can
define up to 64 URL-based applications in NAM.
URL Host Part Match Matching criteria in the host portion of the URL string appears in
HTTP packets. This match is a POSIX Regular Expression1.
1. A regular expression provides a concise and flexible means for matching strings of text, such as particular
characters, words, or patterns of characters. A regular expression is written in a formal language that can be
interpreted by a regular expression processor, a program that either serves as a parser generator or examines
text and identifies parts that match the provided specification. The IEEE POSIX Basic Regular Expressions
(BRE) standard (released alongside an alternative flavor called Extended Regular Expressions or ERE) was
designed mostly for backward compatibility with the traditional (Simple Regular Expression) syntax but
provided a common standard which has since been adopted as the default syntax of many Unix regular
expression tools, though there is often some variation or additional features. Many such tools also provide
support for ERE syntax with command line arguments. In the BRE syntax, most characters are treated as
literals - they match only themselves (in other words, a matches "a").
URL Path Part Match Matching criteria in the path portion of the URL string appears
in HTTP packets. This match is a POSIX Regular Expression1.
Content-Type Match Matching criteria in the Content-Type field of the HTTP packets.
This match is a POSIX Regular Expression1.
Protocol Description Description of this URL-based application.