From: elping (elpingu@xxxxxxxxxx)
Date: Tue Jul 09 2002 - 01:58:31 GMT-3
Ok I need some opinion ...I think i got this right .....
i want to make sure it's all good...
please correct
th below statement is from CCO
Packet Drop Probability
The packet drop probability is based on the minimum threshold, maximum
threshold, and mark probability denominator.
When the average queue depth is above the minimum threshold, RED starts
dropping packets. The rate of packet drop increases linearly as the
average queue size increases until the average queue size reaches the
maximum threshold.
The mark probability denominator is the fraction of packets dropped when
the average queue depth is at the maximum threshold. For example, if the
denominator is 512, one out of every 512 packets is dropped when the
average queue is at the maximum threshold.
When the average queue size is above the maximum threshold, all packets
are dropped. Figure 7 summarizes the packet drop probability.
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lets see if i got this right ...in my own words..
RED drops packets at ramdom when the minimum threshold is reached (at
this point has nothing to do with mark probability)
so when the maximun thershold is reached the mark probability kicks in
...
the below command would do the following
random-detect precedence 2 50 4096 2
start to ramdomly drop packets at 50 packets when you hit 4096 packets
start to drop 1 packet every 2 packets that come through
random-detect precedence 2 50 4096 60
drop 1 out of 60 packets when maximun reached
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