From: Stephen Skinner (stephen_ski@hotmail.com)
Date: Wed May 26 2004 - 15:38:03 GMT-3
guys,
i have read the ios 12.2 QOS guide
i have read the paper`s on rate-limit and police command`s but i still don`t
get the maths
i want to limit an int to X amount of traffic
we shall say 4mg
I want to use CAR...
if i configure this with either the "police" or rate-limit command i have to
put in an Excess burst and a burst ...
some of the config`s i have seen explain that the Be and Bc are part of the
requirments
but some have not ?????.....how where these figure`s calculated ???? Q1
if i put in aburst value ....surely i am exceeding the 4mg figure i require
and therefore i have exceded my limit ??? Q2
the only maths i can come up with to figure out what my excess on 4mb`s will
be is this
normal burst = configured rate * (1 byte)/(8 bits) * 1.5 seconds ???????
extended burst = 2 * normal burst
i don`t understand who to multiply my answer by 1.5 seconds ....??????? Q3
many thanks for ANYONE`s help with this
cheers
steve
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