[c-nsp] Hub-Spoke QoS

[Lala Lander]

Hi Dale,

thanks for your prompt reply. Yes these are all MPLS L3VPN links and yes QoS
with 5 different classes is already configured on the  hub router.

On Sat, May 9, 2009 at 3:24 AM, Dale Shaw
<dale.shaw+cisco-nsp at gmail.com<dale.shaw%2Bcisco-nsp at gmail.com>
> wrote:

> Hi,
>
> On Sat, May 9, 2009 at 7:45 PM, Lala Lander <sshafi at gmail.com> wrote:
> > How are you going to configure QoS/Policing/Shaper
> > on hub site so it cannot overwhelm a DS3 or OC3 site with say like
> 100~200
> > Mbps traffic? I am looking for your suggestions how you are dealing with
> > link speed mismatches in WAN especially when I am dealing with OC12 and
> DS3
> > links.
>
> Disclaimer: I don't know much about ATM.
>
> Are those links access tails into a provider MPLS network? Do you use
> kind of tunneling? What router hardware/interfaces/encapsulation do
> you have? Do you have QoS set up already?
>
> Assuming it's a really simple network, here's a quick, generic and
> completely untested example that I'm sure someone will find a problem
> with! :-)
>
> ip access-list extended SITE1
>  permit ip any 10.1.0.0 0.0.0.255
> !
> ip access-list extended SITE2
>  permit ip any 10.2.0.0 0.0.0.255
> !
> class-map SITE1
>  match access-group name SITE1
> !
> class-map SITE2
>  match access-group name SITE2
> !
> policy-map HUB
>  class SITE1
>  shape average 154400000
>  class SITE2
>  shape average 154400000
> !
> interface WanInterfaceX/X
>  service-policy output HUB
>
> Things get more complicated with tunnels, platform limitations/quirks,
> incorporating existing QoS settings, multicast, and so on, but it's
> still possible.
>
> Have a look at the Hiearchical Queuing Framework (HQF) and per-tunnel
> QoS in 12.4(22)T. I haven't played with it myself -- I've found some
> 12.4(22)T too flaky -- but it looks promising.
>
> cheers,
> Dale
>