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When the voice class has "priority percent 30", does this mean that voice packets will be given 30% of the bandwidth only is link is congested, but if it needs more, it will never get it since the class will only get 30% max?
If there's congestion, such that packets queue in the LLQ class, a policer will engage, policing that LLQ to the specificed bandwidth usage.
If there's no queuing, the LLQ class can use more than the specified bandwidth limit. (NB: Peter Paluch confirmed this for us, with lab testing, when a similar question arose in an earlier posting.)
Also, if there is no voice packets, can other classes with the "bandwidth remaining percent xx" use the 30% that is available out of the voice class, or is 30% RESERVED and cannot be used by any other class?
Other classes can use other classes unused bandwidth. The "reservation" really is a minimum bandwidth guarantee when there's congestion. It's not "reserved" in the sense that it's set aside for exlusive usage of a class.
