[c-nsp] Help with simple QoS configuration

Sascha E. Pollok nsp-list at pollok.net
Wed Nov 7 10:31:14 EST 2007


Hi Otis,

thanks for your example. Unfortunately it is in the wrong
"direction" :-) I meant to give the customer a
GUARANTEED bandwidth on the 100M link instead of shaping
them to a specific bandwidth.

Of course I could shape every other customer to a appropriate
bandwidth so that x percent are always left for the customer
to be prefered but that does not seem like the easiest way
to me.

Anyone else?

Thanks
Sascha

On Wed, 7 Nov 2007, OCOSA ListAcct wrote:

> Hi Sascha,
>
> Our QoS is done via the distribution / aggregation points (7206VXR as
> well). Here is a sample for sub / VLAN interfaces.
>
> class-map match-any all-traffic
>   match ip dscp default
>   match access-group 2000
> !
> !
>
> policy-map 2Mbit-in
>   class all-traffic
>      police 2936000 91750 91750 conform-action transmit exceed-action drop
> policy-map 2Mbit-out
>   class all-traffic
>      police 2936000 91750 91750 conform-action transmit exceed-action drop
>
> This is the config for the vlan / sub interface
>
> interface FastEthernet2/0.3
>  description blah blah
>  encapsulation dot1Q 3
>  ip address 192.168.30.1 255.255.255.248
>  service-policy input 2Mbit-in
>  service-policy output 2Mbit-out
>
>
> Hopes this help or start you at least. If you have another way please
> let me know as well.
>
>
> Otis
>
> Sascha E. Pollok wrote:
> > Folks,
> >
> > maybe someone could push me into the right direction
> > for some QoS related stuff. We have a setup like this:
> >
> >        7206VXR    |  100M  |c2811|   .1q   | 3548XL |
> >     Access Router | ------ | CPE | ------- | Switch | VLAN x
> >
> > >From right to left: a public IP network is connected to
> > a switch. The VLAN on this access port is terminated on
> > a Cisco 2811's Sub-I/F. The 2811 has a 100M link to
> > an access-router (7206VXR). I need to give the customer
> > connected via VLAN x a bandwidth guarantee on the 100M link
> > in both directions. Since there is no NAT in place, we are
> > able to match on source/dest IPs.
> >
> > I guess I would need to configure service-policies but I am
> > unsure about where exactly to configure them on the 2811
> > and/or on the 7206VXR. I tried class-based policies on the
> > Sub-I/F of the 2811 but it said that those aren't supported
> > there.
> >
> > Anyone with an example configuration or something like this?
> >
> > Thanks
> > Sascha


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