[Diffserv-interest] QoS in diffserv network
"Feng Y" <feng6@uwindsor.ca> Thu, 06 November 2003 18:17 UTC
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From: Feng Y <feng6@uwindsor.ca>
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Subject: [Diffserv-interest] QoS in diffserv network
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>> >> It is up to the carrier to monitor congestion periodically to prevent >> lowest-priority traffic from being too congested. EF should ALWAYS get >> through on-time, and AF CIR should always get through, if somewhat delayed >> and jittery. The cases when this is NOT true should be rare and bizarre >> (earthquakes, major network outages, etc.) unless the carrier is not doing >> their job... Which is simply to make sure they engineer total network >> bandwidth above the level of peak CIR. > >Exactly. Each traffic class (i.e. each queue) needs to be provisioned for >the expected load with appropriate over- or under-provisioning. The new >thing is that you can over-provision for some traffic and under-provision >for other traffic. (New to IP, that is. It's hardly a new concept.) > Can we always assume that a higher service class provides the same or a better service than any lower service class in AF? Can the following scenario happen in Diffserv network? The gold service was allocated x percent of a links bandwidth and silver service was allocated x/2 percent of the links bandwidth, but the traffic intensity of gold packets was 10 times higher than that of silver packets. Should the ISP assure that there are not so many gold packets in service? Thanks Yang _______________________________________________ Diffserv-interest mailing list Diffserv-interest@ietf.org https://www1.ietf.org/mailman/listinfo/diffserv-interest
- [Diffserv-interest] congestion in diffserv network Feng Y
- Re: [Diffserv-interest] congestion in diffserv ne… John Schnizlein
- Re: [Diffserv-interest] congestion in diffserv ne… Brian E Carpenter
- [Diffserv-interest] QoS in diffserv network Feng Y
- Re: [Diffserv-interest] QoS in diffserv network Brian E Carpenter
- Re: [Diffserv-interest] QoS in diffserv network Zoltan.Balint
- Re: [Diffserv-interest] QoS in diffserv network Brian E Carpenter