Cisco OL-15491-01 User Manual
Page 183
A-183
Cisco Content Services Gateway - 2nd Generation Release 2.0 Installation and Configuration Guide
OL-15491-01
Appendix A CSG2 Command Reference
match url
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As a further example, by default the following URLs do not match:
http://www.cisco.com/index.html
http://www.cisco.com/INDEX.html
However, if you have disabled case-sensitivity by entering the no ip csg case-sensitive command,
then all of the following URLs match:
http://www.cisco.com/index.html
http://www.cisco.com/INDEX.html
http://www.cisco.com/Index.html
http://www.cisco.com/IndeX.html
http://www.cisco.com/INdex.html
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When you configure URL match patterns for Real Time Streaming Protocol (RTSP) streams, be sure
to account for trailing stream IDs in RTSP stream names. For example, URL match pattern *.mpeg
does not match rtsp://1.1.1.254:554/movie.mpeg/streamid=0 because the stream name has a
trailing /streamid=0. To match such RTSP stream names, use a URL match pattern such as
*.mpeg*.
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You can include more than one wildcard in a CSG2 URL match pattern, but doing so greatly
increases the memory used for pattern-matching, effectively limiting the number of match patterns
that the CSG2 can ultimately support. Therefore, we highly recommend against the use of multiple
wildcards in match patterns.
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When using wildcards in URL match patterns, observe the following guidelines to optimize the
performance of the CSG2:
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Minimize the number of URL match patterns that are applied to a CSG2 content configuration.
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Minimize the number of keyword URL match patterns that you use. In general, it is better to use
multiple single-wildcard URL match patterns instead of individual keyword URL match
patterns.
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Combine several keyword URL match patterns into a single pattern by using UNIX
string-matching special characters. For example, *.movies_comedy.com/*.mpeg,
*.movies_action.com/*.mpeg, and *.movies_drama.com/*.mpeg can be combined into the
following single pattern:
*.movies_(comedy|action|drama).com/*.mpeg
And these patterns
*.movies_comedy.com/*.mpeg
*.movies_action.com/*.mpeg
*.movies_drama.com/*.mpeg
*.clips_comedy.com/*.mpeg
*.clips_action.com/*.mpeg
*.clips_drama.com/*.mpeg
can be combined into the following single pattern:
*.(movies|clips)*?*(comedy|action|drama).com/*.mpeg