From: Diment, Andrew (adiment@qwest.com)
Date: Fri Jan 03 2003 - 13:52:05 GMT-3
Here is a link and this is how it works. There is a lot of contradictory
information on CCO. (watch the wrap)
http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/120newft/120
t/120t7/pqcbwfq.htm#wp5329
Just read towards the top under 'Feature Overview".
Here are some snippit's
Strict priority queueing allows delay-sensitive data such as voice to be
dequeued and sent first (before packets in other queues are dequeued),
giving delay-sensitive data preferential treatment over other traffic.
In the event of congestion, when the bandwidth is exceeded policing is used
to drop packets.
It is much like Committed Access Rate's (CAR) rate limiting, except that
priority traffic metering is only performed under congestion conditions.
When the device is not congested, the priority class traffic is allowed to
exceed its allocated bandwidth. When the device is congested, the priority
class traffic above the allocated bandwidth is discarded.
Andy
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