I've been trying to figure this out for a while and I keep coming up against different answers:
Do packets matched by a single CBWFQ, which however have different DSCP markings, get prioritised out of the queue based on their DSCP markings or does the queue become a FIFO queue?
If you configure WRED on the CBWFQ it will drop packets based on their DSCP markings, so it would make sense that the packets get priority out of the queue based on their markings.
Is it dependent on the hardware? (eg. does it have to be a 7600 to not become FIFO?)
The other question I had was to do with the "bandwidth" command, does the "bandwidth" command have to configured on a CBWFQ to give it a higher priority than another CBWFQ, even if the second CBWFQ is matching on a lower priority DSCP value?
I thought I knew the answers but now I'm not so sure.
Any help would be much appreciated.