MQC - match discard-class & set discard-class

["ccie2be" <ccie2be@xxxxxxxxxx>]

Hi guys,

The documentation is completely useless on these 2 commands.

http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123cgcr/qos_r
/qos_m1g.htm#wp1105992

http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123cgcr/qos_r
/qos_s1g.htm#wp1078435

Can somebody provide a clear example of when to use these commands?

Also, with the set discard-class command, it says this," Use the set
discard-class command only in Pipe mode."

Anyone know what the *^-^*&%(*% this means.  I never heard of "Pipe mode".

Thanks, Tim