[j-nsp] Rate limiting

[Pavel Lunin]

P. S.

BS is needed because dealing with policing (not shaping), the router has no
buffer where to put a packet in for awaiting. It is also not able to drop a
part of a packet -- either transmit or drop a whole one. Well, imagine a
situation when you need to transmit just one packet per hour, but a really
huge one. It is when burst size comes into play.

2008/12/26 Timur Ibragimov <itim at ycc.ru>

> believing it will rate limit traffic to 1500 Kbps. But it starts to drop
> packets at much less than configured bandwidth-limit rates. When
> burst-size-limit was strongly increased (150K) everything went well.
>
> I read that JTAC suggests setting the burst-size-limit equal to the
> amount of traffic forwarded by the interface in 5 milliseconds but I
> can't figure out fundamentals for that suggestion. The appropriate
> policer didn't work as I expected. Can anybody give some references
> about setting allowable time for burst traffic?
>
> Thanks
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