Dummynet Queue Weighting

[Thomas S. Crum - 1WISP, Inc.]

# SAMPLE CONFIG
ipfw queue 1 ip from A to B
ipfw queue 1 config weight 10 pipe 1
ipfw queue 2 ip from C to D
ipfw queue 2 config weight 5 pipe 1
ipfw queue 3 ip from E to F
ipfw queue 3 config weight 1 pipe 1
ipfw pipe 1 config bw 1000Kbit/s

Question?

When setting up queues as I have done above with different weights they (the
queues) will share the assigned pipe proportionate to their weight.

For example if you had traffic on all three queues, the A&B(1), C&D(2), and
E&F(3); they would get 10/16, 5/16, and 1/16 of the pipe, respectively.

But, what if A&B(1) had no traffic? It is my understanding that queue 2 and
3 would still only get 5/16 and 1/16 of the pipe regardless. In this
example, 3/8 or 375Kb/s total. Or would 2 and 3 share the whole pipe if
queue 1 is inactive, which would make my questions moot?

What I am trying to accomplish here is to give a greater amount of bandwidth
between 2 ip's when they are active.  But they are hardly ever active and
therefore I want the rest of the network to use the whole pipe until they
become active.

Any comments and particularly suggestions are appreciated. If I'm entirely
wrong with my presumptions mention that too. :)

Best,
 
Thomas S. Crum
Senior Technical Associate
tscrum at aaawebsolution.com
Toll-free: (800) 834-0626
 
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