Re: LLQ with Bandwidth MQC

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?
>
>
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-- 
Andrew Lee Lissitz
all.from.nj_at_gmail.com
Blogs and organic groups at http://www.ccie.net