[c-nsp] QoS on ingress

[Chris Evans]

Not much you can do as its Fifo.
> I can't seem to figure out what to do with my situation, wondering if
> anyone had encountered this.
>
> Situation :
> Router : 1841 IOS 12.4T or 15.0M
> Internet T1, two eth Interfaces
> There are VoIP traffic (SIP & RTP) and general internet traffic
>
> VoIP provider does not tag SIP/RTP with any kind of QoS in IP header.
> (DSCP/IPP) Internet provider can do QoS based on IPP but since VoIP
> traffic is not marked, it's not useful.
>
> Problem to solve : how to not drop >ingress< VoIP traffic when
> internet traffic is high as much as possible without capping the
> non-VoIP traffic to less than T1 bandwidth.
>
> Caveat : I understand that since it's not getting policed at the
> egress from the provider, any solution is not going to be perfect
>
> I can't limit the traffic on the Eth interface egress because traffic
> can go to either eth interface.
>
> Any thoughts?
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