Вот ответ.
1. Please, provide us these formulas. I mean how "cbs" binds with "cir" & "ebs" with "cbs".
=> CIR is kbps unit, and cbs/ebs is kbytes unit, hence the unit conversion is cbs = kbps /8.
ex: your committed burst rate is 4Mbps, then your cbs = 4000kbps / 8 = 500, you can configure ebs and cbs by your own, so cbs do not need to be the same as ebs, its depend on your setting.
2. Can we configure Flow Meter Burst Mode for speed(cir) more than 1Gbps?! If answer is "yes", please, clarify this moment:
=> Please see the
http://en.wikipedia.org/wiki/Measuring_ ... throughput &&
http://en.wikipedia.org/wiki/SI " The throughput of communications links is measured in bits per second (bit/s), kilobits per second (kbit/s), megabits per second (Mbit/s) and gigabits per second (Gbit/s). In this application, kilo, mega and giga are the standard S.I. prefixes indicating multiplication by 1,000 (kilo), 1,000,000 (mega), and 1,000,000,000 (giga)."
Hence, we need to use 1G = 1000Mbps = 1000000kbps, and 100000kbps / 64kbps = 156250. This is the full speed, our maunal say 156249 is unsing the full speed minus 1, to be the max rate for the limitation.
3. Cisco has the following document:
http://www.pluscom.ru/cisco_product/cc/ ... police.htmDo we have the same documentation?
=> We do not have this documentation, we have the DCP material like DCP - QoS(0412110038).ppt
4. For example: the customer wants to limit 250Mbps the speed, cbs is ? & ebs is ?
=> CIR:
250Mbps = 250000kbps
250000kbps / 64kbps = 3906.25
So your cir can set to 3907 for the limit of 250Mbps.
CBS & EBS:
cbs/ebs is for handling the burst traffic, so if you just want to limit to 250Mbps without any burst space, then you can set both cbs/ebs to 0.
and if you can allow some burst traffic pass, then your can set the cbs/ebs bucket value, and the unit is kbytes.
So for example, if you limit to 250Mbps with the cbs 4Mbps, ebs 1Mbps, then the command should be:
# config flow_meter profile_id 1 access_id 1 sr_tcm cir 3907 cbs 500 ebs 125 conform permit exceed drop violate drop.