[j-nsp] CoS buffer size

[Adam Vitkovsky]

Hi Dan, Saku, Marcin,

My understanding was that you might be able to oversubscribe only using PIR (need to test).
And in that case all the queues are in the excess region.
So only the excess priorities are honoured (HI and LO in strict priority fashion) and queues with the same priority are serviced round robin.

I also thought that weight with which the queues in excess region are served is proportional to the transmit-rate (as percentage of VLAN PIR).
Though looking at the show outputs and reading your test results it looks like it's not the case.
But have you tried setting excess-rate for the queues - that should be honoured while a given queue is in excess region right?

I just can't believe that once in excess region the queues (using %) are using main interface PIR -is it a bug please?

With regards to buffers
May I oversubscribe buffers by configuring say "delay-buffer-rate percent 10" for 11 VLANs on a physical interface please?



adam