On Thu, 11 Apr 2019, Jonathan Morton wrote:
So what this boils down to is a two-stage TBF policer. From idle, such
a system will let a burst of traffic through unfiltered, then start
dropping once the bucket is empty; the bucket is refilled at some
configured rate. The two-stage system allows implementation of
"PowerBoost" style policies.
I'm not so sure:
"Buffering (Enqueuing) Once a packet is assigned to a certain forwarding
class, it will try to get a buffer in order to be enqueued. Whether the
packet can get a buffer is determined by the instantaneous buffer
utilization and several attributes of the queue (such as Maximum Burst
Size (MBS), Committed Burst Size (CBS) and high-prio-only) that will be
discussed in more detail later in this chapter. If a packet cannot get a
buffer for whatever reason, the packet will get dropped immediately. "
The person I talked to yesterday insisted that they actually did 10ms of
*buffering* *bidirectionally*, because we specifically discussed policing
and buffering and the difference.
I have access to one of their devices in our lab, I'm going to do testing
of this in the next few weeks so I'll know for sure by then.
--
Mikael Abrahamsson email: [email protected]
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