Re: LLQ with Bandwidth MQC

If I understood, you are configuring a policy-map that require 100% of
reservable bw.

You can apply this policy-map only after "max-reserved-bandwidth 100".
Then, If you change max-reserved-bandwidth to 76, the policy will be removed
from interface because lack of reservable bw

mirco.

On Wed, Nov 25, 2009 at 7:46 PM, ALL From_NJ <all.from.nj_at_gmail.com> wrote:

> The max-reserve command only relates to what can be configured, and not
> what
> will actually be applied to the LLQ.
>
> From what I understand, the priority bandwidth command comes first in the
> calculations when configured. So with this understanding, you can
> subtract
> this configured value from the avail bandwidth and then calculate how much
> you have left over for other classes. Have you configured too much?
>
> If you tried to apply this to an interface, I would think that you would
> have gotten an error message if there was not enough bandwidth avail.
>
> Can you paste your configs, something tells me I am not understanding what
> you wrote ...
>
> Many thanks,
>
> Andrew
>
>
>
> On Wed, Nov 25, 2009 at 1:24 PM, S Malik <ccie.09_at_gmail.com> wrote:
>
> > All,
> > I have deliberately configured three classes with BW statement under a
> > policy-map so that it consume 75% of BW.
> >
> > Fourth class I configured with priority %25. Now I could configure
> > service-policy out on interface by changing "max-reserve bw 76%.
> >
> > I think, BW 25% command under policy-map means minimum 25% and priority
> 25%
> > means upto 25%.
> >
> > What I like to confirm is that if I keep max-reserve BW 76% then only 1%
> of
> > BW will be used for LLQ?
> >
> > On Wed, Nov 25, 2009 at 11:39 AM, ALL From_NJ <all.from.nj_at_gmail.com
> >wrote:
> >
> >> If you have configured more bandwidth than what is avail, you will see
> the
> >> error message telling you that you do not have enough. You can use the
> >> max-reserv command to alter what is available for your configuration.
> >>
> >> The link:
> >>
> >>
> http://www.cisco.com/en/US/docs/ios/qos/command/reference/qos_m1.html#wp1039174
> >>
> >> By default you can only configure up to 75% of the bandwidth. Use this
> >> command when you want to configure more. In your example, 24% would
> still
> >> be available for class-default, aka ... unnamed traffic that does not
> match
> >> your class-maps.
> >>
> >> The percent command will be a percentage of the available bandwidth.
> The
> >> above link can also be used for looking up these commands as well.
> >>
> >> IMO, the percentage commands are very good when you are offering a
> service
> >> to another or when you want to standardize a QoS config.
> >>
> >> For example, network management traffic will always get at least 5% of
> the
> >> bandwidth or biz traffic will always get 40% of bandwidth etc ...
> >>
> >> Some service providers might offer different service levels at different
> >> prices. An example of these might look like:
> >>
> >> VoIP always get 25%
> >> Net Management always gets 5%
> >> Ip Prec 3 might always get 30%
> >> IP Prec 4 .... gets 15%
> >> etc ...
> >>
> >> If you are a service provider, you can apply these configs to any link
> and
> >> maintain the same service levels regardless of the actual bandwidth of
> the
> >> link. Voip will still always get 25% whether it is on a T1 or T3 ...
> >>
> >> Does this make sense? I hope my examples are clear (many times I
> confuse
> >> myself :-))
> >>
> >> HTH,
> >>
> >> Andrew Lee Lissitz
> >> .
> >> On Wed, Nov 25, 2009 at 11:18 AM, S Malik <ccie.09_at_gmail.com> wrote:
> >>
> >>> ALL,
> >>>
> >>> if I have three classes of traffic each with 25% of minimum BW and 4th
> >>> class
> >>> of traffic with priority percent 25 then all I need for the
> >>> service-policy
> >>> command to go through under interface is "max-reserve bw 76%".
> >>>
> >>> My question is that in this case only 1% of BW will be allocated to the
> >>> traffic which is configured for LLQ?
> >>>
> >>>
> >>> Blogs and organic groups at http://www.ccie.net
> >>>
> >>> _______________________________________________________________________
> >>> Subscription information may be found at:
> >>> http://www.groupstudy.com/list/CCIELab.html
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>
> >>
> >> --
> >> Andrew Lee Lissitz
> >> all.from.nj_at_gmail.com
> >>
> >
> >
>
>
> --
> Andrew Lee Lissitz
> all.from.nj_at_gmail.com
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net
Received on Wed Nov 25 2009 - 21:03:26 ART