From: Jon Tucker (Jon_Tucker@xxxxxxxxx)
Date: Thu Oct 18 2001 - 19:14:30 GMT-3
This isn't a real scenario I'm trying to configure. It is just a exercise
in trying to calculate the correct queue sizes for custom queues. So, you
may vary well be correct. I pulled that VoIP ACL from the Satterlee/Hutnik
book (pg 483).
-----Original Message-----
From: Timothy Ouellette [mailto:timoue@home.com]
Sent: Thursday, October 18, 2001 5:55 PM
To: Jon Tucker; ccielab@groupstudy.com
Subject: Re: Custom Queueing - Please check my math...
Hey Jon. Just a quick question on your custom queue.
>From what i've read about voip. Doesn't RTP start at UDP port 16384
using odd ports and RTCP start at 16386 and uses even ports. Wouldn't
you need both in order to queue VOIP packets?
Awaiting your comments.
Tim
Jon Tucker wrote:
>
> I'm looking for feedback that I am/not calculating my custom queue byte
> count the correct size. Below I've made up a circuit with a 56K cir and a
> port speed of 64K. Assume the carrier lets me burst to port speed. My
> first question would be do I calculate the queue sizes based on cir or
> cir+be? I did the calculations below based on cir.
>
> Anyway, I said I wanted to give 10% to WWW, 25% to DLSW, 25% to VoIP, and
> the remaining 40% to everything else.
>
> So, 56000 bits per second = 7000 bytes per second (56000/8)
>
> 7000 * .10 = 700
> 7000 * .25 = 1750
> 7000 * .40 = 2800
>
> interface serial0.2
> frame-relay class pointtwo
>
> map-class frame-relay pointtwo
> frame-relay traffic-rate 56000 64000
> frame-relay adaptive-shaping becn
> frame-relay custom-queue-list 2
>
> queue-list 2 protocol ip 1 tcp www
> queue-list 2 protocol dlsw 2
> queue-list 2 protocol ip 3 list 180
> queue-list 2 default 4
> queue-list 2 queue 1 byte-count 700
> queue-list 2 queue 2 byte-count 1750
> queue-list 2 queue 3 byte-count 1750
> queue-list 2 queue 4 byte-count 2800
>
> access-list 180 permit udp any any range 16384 16484
> access-list 180 permit tcp any any eq 1720
>
> Thanks,
> - JT
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