Re: Srr-queue bandwidth limit

I sincerely appreciate you taking the time to give me some feedback on
this. I am going to throw some configs around today and look at this
behavior as well. My original assumption was that it would use the physical
port speed, or connected speed, but I have been wrong before...so its always
good to verify. Again man, thank you.

On Fri, Apr 29, 2011 at 10:11 PM, ALL From_NJ <all.from.nj_at_gmail.com> wrote:

> Hello Jason, I hope this finds you doing well.
>
> Jason, I did a quick lab test to practice this command and view the
> results. Thanks for asking your question!
>
> I had a wonderful lesson this week on Catalyst queuing by Narbik ... so i
> was happy to see your question.
>
> First, the answer is the port speed, and not the bandwidth command. If you
> have questions, I would suggest reading the top of the srr queue section in
> the 3560 guides. Some of the srr configs and parameters can get quite
> confusing, but in order to find the answer you are looking for in this
> thread, just read the theory section on srr. Also, the bandwidth limit
> command section should help as it mentions the port.
>
> Your question below can also easily be lab tested. You only need a client
> and a switch; I used a router and a switch and then added another router in
> order to generate more traffic via the ping command. Set the srr bandwidth
> limit and see what affect it has on the traffic. While doing so, also set
> the bandwidth command and see if the bandwidth command is factored in.
> Quick and easy test!
>
> The bandwidth command is not directly related to the actual port speed, and
> can be set to whatever you want... it is for reference by other protocols
> and functions.
>
> A hint in case you wish to also test this - because I am only using ping in
> my tests, I set the port speeds to be 10Mb on my switch. This helped me use
> the bandwidth limit command and watched the rate go up or down based on my
> settings.
>
> Lastly, when watching the interface, keep in mind that this particular
> command is for egress traffic. So, if you are pinging the switch from the
> router, look for the output rate and not the input.
>
> HTH,
>
> Andrew Lissitz
>
>
> .
> .
> On Fri, Apr 29, 2011 at 3:43 PM, Jason Lunde <willroute4food_at_gmail.com>wrote:
>
>> If one has say an srr-queue bandwidth limit 20 on an interface, but also
>> has
>> the bandwidth command configured on the same interface; will the srr-queue
>> bandwidth limit command use the physical port rate, or will it use what is
>> referenced by the bandwidth command?
>>
>>
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>
> --
> Andrew Lee Lissitz
> all.from.nj_at_gmail.com

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Received on Sat Apr 30 2011 - 14:51:01 ART