On Tue, Jan 15, 2002 at 11:38:51PM -0500, paolrossi@genie.it wrote:
> If I apply the following profile to an interface queue, how can I find
> out the absolute value of my thresholds in packets? How can I find
> the max queue length? HOw many msecs worth of traffic can be stored
> in a queue?
>
> drop-profiles {
> ARGENTO-DROP-HIGH {
> interpolate {
> fill-level [ 25 75 ];
> drop-probability [ 0 100 ];
> }
> }
Z jcells
--------------------------- * 100 = A
Y * 390 jcell/Mbps
X Mbps * ------------------
100
A is the fill-level in %
X is the Interface speed in Mbps
Y is the allocated bandwidth to the queue in %
Z is the number of jcells currently in the queue
So what you want is:
A * X * Y * 390
Z = ---------------
10000
So if you have a 155 Mbps interface, the queue is allocated 20%
of the bandwith and you have a fill level of 25, it translates
into
25 * 155 * 20 * 390
------------------- = 3023 jcells = 193472 bytes
10000
/Jesper
-- Jesper Skriver, jesper(at)skriver(dot)dk - CCIE #5456 Work: Network manager @ AS3292 (Tele Danmark DataNetworks) Private: FreeBSD committer @ AS2109 (A much smaller network ;-)One Unix to rule them all, One Resolver to find them, One IP to bring them all and in the zone to bind them.
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