Re: Policing and dropping packets

I believe B is correct. The burst parameters are in terms of bytes, not
bits. 8000 bytes = 64,000 bits. Also, the burst is not a rate in terms of
something like bits or bytes per second. The burst values are NOT rates.
They are literally the size of the token bucket. So, if you configure a BE
here of 8000 bytes you are not saying the burst is 8000 bytes or 64,000 bits
PER SECOND, you are just saying the size of the BE token bucket that is used
to sustain bursts is 8000 bytes. The size of that token bucket mixed with
time and the policed rate determine how much burst you can actually sustain

HTH man

On Wed, Jul 20, 2011 at 5:59 PM, Tom Kacprzynski <tom.kac_at_gmail.com> wrote:

> Hello,
> I am reviewing few QoS questions I got to study. The question is:
>
> "Using CBWFQ Policing with command:
> police 100000 5000 8000 conform-action transmit exceed-action
> set-qos-transmit 4 violate-action drop.
> When will the router begin to drop packets?"
>
> a. when burst rate exceeds 100000 bits
> b. when burst rate exceeds 64000 bits
> "
>
> I thought A, but the answer sheet says B. So my questions which is right?
> Why would you set something to police at 100 kbps when you'll start getting
> packets dropped at 64 Kbps...doesn't make sense.
>
> Can someone else please verify and explain?
>
> Thank you,
>
> Tom
>
>
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