Hi Folks,
I have some questions about QoS that maybe someone can help me to understand better.
1) A router's interface has a hardware queue and software queue for inbound and outbound traffic. I understood that IOS implements the software queue for each interface with allocation of RAM memory. But, what about the hardware queue, what kind of memory is used?
2) A catalyst switch has already a predefined number of queues for each interface that can't be modified, but are these queues considered software queue or hardware queue? These queues are implemented with what kind of memory?
3) Catalyst switches like 3560 uses maps to decide which queue should be used for each DSCP value. But, this behavior occurs even if the QoS feature is disabled on the switch (no mls qos)? If QoS is disabled, does the switch continue to use 4 output queues with 25 percent of buffer allocation for each queue or it simulates only one output queue with all the buffer allocation for this queue?
Thanks you!
